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53 resultados encontrados para: AUTOR: Markaida Aburto, Unai
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1.
Artículo
Trophic ecology of humboldt squid, dosidicus gigas, in conjunction with body size and climatic variability in the Gulf of California, Mexico
Portner, Elan J. (autor) ; Markaida Aburto, Unai (autor) ; Robinson, Carlos J. (autor) ; Gilly, William F. (autor) ;
Disponible en línea
Contenido en: Limnology and Oceanography Volumen 65 (2020), p. 732-748 ISSN: 1939-5590
PDF
Resumen en: Inglés |
Resumen en inglés

Over the past two decades, the Gulf of California (GOC) has experienced three strong El Niño events (1997–1998, 2009–2010, and 2015–2016), each of which was followed by a drastic reduction in mantle length of mature Humboldt squid, Dosidicus gigas (from >60 cm to <20 cm). However, it is unclear how the oceano-graphic changes associated with strong El Niño events affected the midwater organisms on which D. gigas feed, limiting our ability to assess the relative importance of temperature and food availability in the phenotypic response of D. gigasto environmental variability. We quantified the diet of D. gigas in the GOC before, during, and following the past three El Niño events and found that although its diet varied little across a large range of body sizes (8–85 cm), significant and predictable diet variability was observed with respect to sea surface temperature and chlorophyll-a concentration. Consumption of large numbers of relatively small, high calorie prey inboth relatively cool (anchovies) and relatively warm, productive conditions (myctophids) is likely necessary to support growth to large body sizes before maturation. When warm, unproductive conditions prevailed in the GOC, only small squid were present and had diets dominated by euphausiids and pteropods, prey with relatively low caloric value. Using a time series of diet data, this work provides unique insights into the response of a midwater forage community to oceanographic variability and the effects of environmental variability on thetrophic ecology of an oceanic predator.


2.
Artículo
*Solicítelo con su bibliotecario/a
Capture efficiency of artificial lures in baited lines for mayan octopus, octopus maya, fishery in Campeche, Mexico
Markaida Aburto, Unai (autor) ; Méndez Loeza, Iván (autor) ; Rodríguez Domínguez, Almendra (autora) ;
Contenido en: Marine Fisheries Review Vol. 81, no. 1 (2019), p. 53-60 ISSN: 0090-1830
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Resumen en: Inglés |
Resumen en inglés

The Mayan octopus, Octopus maya, fishery from the Campeche Bank is the largest octopus fishery in the Americas and one of the largest worldwide. This fishery uses a large quantity of crabs, Brachyura, as bait, and these crustacean populations are heavily impacted. To investigate alternative lures we examined the efficacy of various artificial lures ranging from plastic crabs to jigs baited with fish during the 2012 and 2013 seasons. Artificial PVC “crab” lures showed the best yields. However, their performance was less effective than natural crab in all cases. A simple simulation showed that using these lures, harvests would decrease by 42–44% compared to using natural crab. We suggest the use of PVC crab combined with an organic compound that releases an attractive scent for octopus in further experiments.


3.
Artículo
*Solicítelo con su bibliotecario/a
First records of an egg mass and a paralarva of Thysanoteuthis rhombus (Cephalopoda: Thysanoteuthidae) in the Northeastern Tropical Pacific
De Silva Dávila, Roxana ; Avendaño Ibarra, Raymundo (coaut.) ; Palomares García, Ricardo (coaut.) ; Markaida Aburto, Unai (coaut.) ;
Contenido en: Pacific Science Vol. 73, no. 4 (December 2019), p. 475-491 ISSN: 1534-6188
Nota: Solicítelo con su bibliotecario/a
Resumen en: Inglés |
Resumen en inglés

An egg mass fragment and one paralarva of the squid Thysanoteuthis rhombus found in the Northeastern Tropical Pacific and Gulf of California, Mexico are the first evidence of reproduction of this species in the region. The egg mass fragment was in the disintegration process and contained 30,360 premature hatchlings (96.2%) and 1,192 eggs (3.8%) at different developmental stages. Head chromatophore patterns, buccal crown pigmentation, arm and tentacles indexes, and other morphological characteristics complement previous descriptions of T. rhombus paralarvae. The zooplanktonic community associated with the egg mass was dominated by six species of predatory copepods of the genus Labidocera, Pontella, Oncaea, and Corycaeus which might have actively colonized the egg mass to feed upon the eggs and hatchlings.


4.
Artículo
*Solicítelo con su bibliotecario/a
Iteroparity or semelparity in the jumbo squid Dosidicus gigas: a critical choice
Laptikhovsky, Vladimir V. (autor) ; Arkhipkin, Alexander I. (autor) ; Lipiński, Marek R. (autor) ; Markaida Aburto, Unai (autor) ; Murua, Hilario (autor) ; Nigmatullin, Chingiz M. (autor) ; Sauer, Warwick H. H. (autor) ; Hoving, Hendrik Jan T. (autor) ;
Disponible en línea
Contenido en: Journal of Shellfish Research Volumen 38, número 2 (August 2019), p. 375-378 ISSN: 1943-6319
Nota: Solicítelo con su bibliotecario/a
Resumen en: Inglés |
Resumen en inglés

The jumbo squid Dosidicus gigas was recently claimed to be an iteroparous species with ovaries returning to an immature, resting stage after spawning. Analysis of the data and figures presented in two recent articles revealed that this claim was based on misinterpretation of histological information and that Dosidicus is not iteroparous. Having consensus on the reproductive strategy of Dosidicus is important for the management of fisheries for this species.


5.
- Tesis
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Biología reproductiva de Octopus hubbsorum Berry, 1953 en el corredor pesquero Santa Rosalía - Punta Chivato, BCS, México. / Evelyn Arías Cedeño
Arías Cedeño, Evelyn ; Arellano Martínez, Marcial (director) ; Markaida Aburto, Unai (director) ;
La Paz, Baja California Sur, México : Instituto Politécnico Nacional. Centro Interdisciplinario de Ciencias Marinas , 2018
Nota: Solicítelo con su bibliotecario/a
PDF
Resumen en: Español | Inglés |
Resumen en español

Octopus hubbsorumes la principal especie de pulpo capturada en el Pacifico mexicano, sin embargo, aún no cuenta con regulación pesquera. Santa Rosalía en Baja California Sur, es el puerto donde se registran los mayores desembarques anuales de pulpo. Las muestras mensuales provinieron de la captura comercial de septiembre del 2014 a agosto del 2015 en el corredor pesquero Santa Rosalía Punta Chivato. Se analizaron un total de 202 organismos cuyo rango de longitud dorsal del manto (LDM) fue 50-170 mm con un promedio y moda de 110 mm, mientras que, el peso total (PT) fluctuó entre los 150 y 1900 g con un promedio de 695 g y moda de 500 g, se les evaluaron algunos de los principales parámetros biológicos como la proporción sexual, ciclo reproductivo, época reproductiva, tallay peso a la madurez, condición durante la maduración gonádica, además de la interacción de la temperatura superficial del mar (TSM) con la actividad reproductiva. En la muestra total (0.6H:1M) y en agosto (0.22H:1M) y octubre (0.25H:1M) hubo significativamente más machos que hembras. El principal evento reproductivo de las hembras ocurre en junio-julio, coincidente con el máximo valor de TSM(30°C). En tanto que, la actividad reproductiva de los machos fue continuaa lo largo del año. El patrón ovárico fue sincrónico de acuerdo conla distribución del área proporcional de los ovocitos. De los tres índices reproductivos utilizados en este estudio, el IGS fue el que más se aproximó a identificar el estadio maduro y consecuentemente la actividad reproductiva, definida previamente por el análisis microscópico.

El índice de condición de las hembras no tuvo una tendencia clara con respecto a la maduración gonádica, lo que hace suponer que la energía para el desarrollo de la gónada no proviene principalmente de las reservas de la glándula digestiva. La talla y peso a la madurez de las hembras fue de 130 mm LDMy 960 g de peso total (PT), respectivamente. Mientras que, los machos presentaron signos de madurez a 100 mm LDM y 600 g PT. Se evaluaron los rasgos reproductivos y la estrategia de patrón de desove de O. hubbsorum, aportando información básica para un futuro manejo de la especie principal de pulpo del Pacífico mexicano.

Resumen en inglés

Octopus hubbsorum is the main species of octopus captured in western Mexico and Santa Rosalía is the port that generates the largest annual landings of octopus from all Baja California Sur (BCS). Based on commercial captures, a monthly sampling was carried out from September 2014 to August 2015 in the Santa Rosalía Punta Chivato fishing corridor. The 202 sampled octopuses ranged from 50 to 170 mm in mantle length (ML) and 150 to 1900 g in body weight (BW). We evaluated main biological parameters, sex ratio, reproductive event, reproductive indices, size and weightat maturity and condition. The total gender ratio was significantly different from 1:1 (0.6 H: 1m), however the monthly ratio was only significant in August and October. Mature males were found all year round and ovarian development was synchronous as part of their reproductive strategy.

The main reproductive peak occurs in June-July when the surface temperature of the sea reaches 30 ° C and the secondary peak in March-April at 20.7 °C. Based on the three indirect reproductive indices used in this study the IGS was the most appropriate to determine the stages of maturity previously defined by the microscopic analysis. According to the condition index, females apparently support the gonadic maturation of most of the diet. The size and weight at maturity of females was 130 mm LDM and 960 g PT, respectively and 100 mm and 600 g for males. The reproductive traits and reproductive strategy of O. hubbsorum was evaluatedto provide basic information for future management.


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Resumen en: Inglés |
Resumen en inglés

The common octopus of the Veracruz Reef System (VRS, southwestern Gulf of Mexico) has historically been considered as Octopus vulgaris, and yet, to date, no study including both morphological and genetic data has tested that assumption. To assess this matter, 52 octopuses were sampled in different reefs within the VRS to determine the taxonomic identity of this commercially valuable species using an integrative taxonomic approach through both morphological and genetic analyses. Morphological and genetic data confirmed that the common octopus of the VRS is not O. vulgarisand determined that it is, in fact, the recently described O. insularis. Morphological measurements, counts, indices, and other characteristics such as specific colour patterns, closely matched what had been reported for O. insularis in Brazil. In addition, sequences from cytochrome oxidase I (COI) and 16S ribosomal RNA (r16S) mitochondrial genes confirmed that the common octopus from the VRS is in the same highly supported clade as O. insularisfrom Brazil. Genetic distances of both mitochondrial genes as well as of cytochrome oxidase subunit III (COIII) and novel nuclear rhodopsin sequences for the species, also confirmed this finding (0–0.8%). We discuss our findings in the light of the recent reports of octopus species misidentifications involving the members of the ‘O. vulgaris species complex’ and underscore the need for more morphological studies regarding this group to properly address the management of these commercially valuable and similar taxa.


7.
- Artículo con arbitraje
*Solicítelo con su bibliotecario/a
Reproduction and population structure of Octopus mimus fished in a Marine Protected Area of Ecuador
Markaida Aburto, Unai ; Flores, Luis (coaut.) ; Arias, Evelyn (coaut.) ; Mora, Elba (coaut.) ;
Disponible en línea
Contenido en: Journal of the Marine Biological Association of the United Kingdom Vol. 98, no. 6 (2018), p. 1383–1389 ISSN: 1469-7769
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Resumen en: Inglés |
Resumen en inglés

Octopus mimus is the main octopus targeted by the small-scale fishery in the Eastern Pacific. Commercial catches of octopus from the Reserva de Producción Faunística Marino-Costera Puntilla de Santa Elena (REMACOPSE) Marine Protected Area in Ecuador were sampled from July to December 2013 in order to describe the reproduction and population structure of this octopus. The 4171 sampled octopuses ranged from 56 to 250 mm in mantle length (ML) and 45 to 3178 g in body weight (BW). Mean octopus weight did not change monthly. Males were mostly mature while the majority of females were immature. Presence of some mature and a few spent females in all months sampled suggests that the population shows an extended spawning period. No spawning peak could be properly defined. Sex ratios did not significantly shift from the expected 1:1 in most samples. Females mature at a larger size (1234 g, BW; 165 mm, ML) than males (487 g BW; 114 mm ML). We recommend considering a minimum legal size of 1200 g BW. A year-long sampling programme for O. mimus should also be completed in order to detect any spawning peak.


8.
Artículo
Resumen en: Inglés |
Resumen en inglés

Mexican management plans currently consider just two octopus species in the official regulations, Octopus maya and Octopus vulgaris. However, the common octopus of the southwestern Gulf of Mexico has been recently identified as Octopus insularis, a species with unique biological and ecological characteristics. In accordance, we sampled O. insularis artisanal catches from the marine protected area of the Veracruz Reef System (VRS) between November 2017 and October 2018 and described its population structure and reproductive dynamics to provide basic biological information for the sustainable management of the species in the region. The 1,007 sampled octopuses ranged from 48 to 2,063 g in body weight (BW) and from 26 to 163 mm mantle length (ML). Most males were mature while the majority of females were immature. Although fishing closures in January, February and August precluded data gathering, most mature and juvenile specimens were registered in March and June respectively, thus, suggesting a year-long life cycle with spawning and recruitment peaks during winter and summer months respectively. Overall, sex ratios did not significantly shift from the expected 1:1, however males were significantly more abundant in December, which could be related to female spawning migrations to deeper waters. This was also supported by the generalized scarcity of mature and spent females in the catches. Males mature at a smaller size (590 g BW; 90 mm ML) than females (870 g BW; 108 mm ML). Although size at maturity is lower than the current minimum legal size for both sexes, most of sampled octopuses were smaller anyway, raising concern about the future sustainability of the fishery.


9.
Tesis - Maestría
*En proceso técnico. Solicítelo con la bibliotecaria de SIBE-Campeche
Distribución tridimensional de paralarvas de cefalópodos en el Sistema Arrecifal Mesoamericano / Ana Laura Avilés Díaz
Avilés Díaz, Ana Laura ; Markaida Aburto, Unai (Director) ; De Silva Dávila, Roxana (co-directora) ; Carrillo Bibriezca, Laura Elena (asesora) ; Vásquez Yeomans, Lourdes (asesora) ;
Lerma, Campeche, México : El Colegio de la Frontera Sur , 2017
Clasificación: TE/594.509726 / A9
Nota: En proceso técnico. Solicítelo con la bibliotecaria de SIBE-Campeche
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Índice | Resumen en: Español |
Resumen en español

El conocimiento sobre la abundancia y distribución de las paralarvas (PL) de muchas especies de cefalópodos es escaso, especialmente en áreas tropicales. El presente estudio examina por primera vez la fauna de cefalópodos en las aguas superficiales del Sistema Arrecifal Mesoamericano (SAM), a partir de una campaña oceanográfica a mesoescala realizada a bordo del B/O Gordon Gunter (NOAA) del 14 al 30 de enero de 2007 desde el canal de Yucatán, México, hasta el Golfo de Honduras. Se colectaron un total de 108 muestras en cuatro estratos de profundidad (0-25, 25-50, 50-75 y 75-100 m) utilizando una red MOCNESS-1 de 333 μm. Se registraron 451 PL pertenecientes a 10 familias, 16 especies, 7 formas y un complejo de especies. Las familias Enoploteuthidae (60%), Onychoteuthidae (22%) y Ommastrephidae (8%) representadas por Abralia sp.1, Onychoteuthis banksi y Ornithoteuthis antillarum respectivamente, fueron las más abundantes. La mayor abundancia de PL se encontró en los primeros 25 m de la columna de agua en toda el área de estudio. En cuanto a la distribución horizontal, se observó mayor abundancia en el Golfo de Honduras. La distribución vertical y horizontal de las PL se relacionó con la migración ontogénica y con el transporte de agua por los regímenes de circulación dominados por la Corriente de Yucatán, zonas de retención tales como el Giro de Honduras, el remolino al sur de Cozumel y la zona de afloramiento del norte del SAM. El SAM es un importante sistema de dispersión para las paralarvas, que conecta el Caribe con el Golfo de México.

Índice

Capítulo I
Resumen
I. Introducción
II. Antecedentes
III. Justificación
IV. Hipótesis
V. Objetivos
General
Particulares
Capítulo II
Three-dimensional distribution of cephalopod paralarvae in the Mesoamerican Barrier Reef System
Abstract
Introduction
Method
Study area
Sampling
Data Analysis
Results
Discussion
Conclusions
Acknowledgements
References
Figures and tables
Capítulo III
Conclusiones
Literatura citada


10.
- Artículo con arbitraje
Resumen en: Inglés |
Resumen en inglés

Although recent years have seen an increase in genetic analyses that identify new species of cephalopods and phylogeographic patterns, the loliginid squid of South America remain one of the least studied groups. The suggestion that Doryteuthis plei may represent distinct lineages within its extensive distribution along the western Atlantic coasts from Cape Hatteras, USA (36 N) to northern Argentina (35 S) is consistent with significant variation in a number of environmental variables along this range including in both temperature and salinity. In the present study D. plei samples were obtained from a large number of localities along the western Atlantic coasts to investigate the distribution of these possible species in a phylogeographic context. Phylogeographic analyses were performed using the mitochondrial Cytochrome Oxidase I gene and nuclear Rhodopsin gene. Divergence times were estimated using Bayesian strict clock dating with calibrations based on fossil records for divergence from the lineage containing Vampyroteuthis infernalis (162 mya), the probable origins of the North American loliginids (45 mya), and the European loliginids (20 mya) and fossil statolith from Doryteuthis opalescens (3 mya). Our results suggest a deep genetic divergence within Doryteuthis plei. The currently described specie consists of two genetically distinct clades (pair-wise genetic divergence of between 7.7 and 9.1%). One clade composed of individuals collected in northwestern Atlantic and Central Caribbean Atlantic waters and the other from southwestern Atlantic waters.

The divergence time and sampling locations suggest the speciation process at approximately 16 Mya, which is in full agreement with the middle Miocene orogeny of the Caribbean plate, ending up with the formation of the Lesser Antilles and the adjacent subduction zone, coinciding with a particularly low global sea level, resulting in the practical absence of continental shelves at the area, and therefore an effective geographic barrier for D. plei. Furthermore, this study also provides evidence of previously undocumented sub-population structuring in the Gulf of Mexico.


11.
Tesis - Maestría
Hábitos alimentarios de la raya pinta (Aetobatus narinari) y caracterización de sus posibles presas en el sur del Golfo de México / Francisco Serrano Flores
Serrano Flores, Francisco (autor) ; Pérez Jiménez, Juan Carlos (Tutor) ; Méndez Loeza, Iván (Asesor) ; Markaida Aburto, Unai (Asesor) ;
Lerma, Campeche, México : El Colegio de la Frontera Sur , 2017
Clasificación: TE/597.097264 / S4
Bibliotecas: Campeche
Cerrar
SIBE Campeche
ECO040006742 (Disponible)
Disponibles para prestamo: 1
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Índice | Resumen en: Español |
Resumen en español

En las pesquerías del sur del Golfo de México, Aetobatus narinari (raya pinta) es el elasmobranquio con mayor valor comercial y la segunda especie de raya más capturada, principalmente de enero a abril. Se desconoce la función que desempeña esta especie en las cadenas tróficas de la región, lo cual hace que ignoremos el impacto que tendría su probable disminución y el de sus posibles presas en el ecosistema. En este estudio fueron analizados estómagos e intestinos de un total de 154 organismos de esta especie, (68 hembras y 86 machos), y se realizaron muestreos de las presas potenciales dentro y fuera de su principal zona de pesca. Las especies-presa más importantes en la dieta de A. narinari fueron los gasterópodos, con más del 90% IIR (Índice de Importancia Relativa), y en menor medida los crustáceos con 2.8% IIR. No hubo diferencias en la dieta entre sexos; y la diferencia mínima o nula entre la dieta de las rayas menores < 100 cm (ancho de disco, AD) con las de tamaño medio (100-120 cm AD), y entre las menores con las grandes (> 120 cm AD), fue la única estadísticamente significativa (R <0.25, P <0.05). Sin embargo, el caracol oliva (Americoliva reticularis) fue la especie-presa más importante para las rayas menores para ambos sexos; las de tamaño medio consumieron más caracol lancetilla (Strombus pugilis) (rayas hembras y machos), caracol blanco (Lobatus costatus) (rayas hembras) y con menor importancia A. reticularis (rayas macho). Para las rayas hembras de mayor tamaño, las especies-presa más importantes fueron S. pugilis y cangrejo ermitaño (Petrochitus diogenes), y para los machos fueron en su mayoría S. pugilis. Las presas potenciales (vivas) más importantes (frecuencia y peso) en la zona de muestreo del bentos fueron: S. pugilis y P. diogenes, por lo cual es posible que las rayas de tamaño mediano y grande de ambos sexos se estén alimento en la zona de muestreo, y las rayas más pequeñas solo ocasionalmente.

Índice

1. Resumen
2. Introducción
3. Antecedentes
4. Justificación
5. Hipótesis
6. Objetivos
6.1. Objetivo general
6.2. Objetivos particulares
7. Área de estudio
8. Metodología
8.1 Muestreo de campo
8.1.1 Recolección de estómagos
8.1.2 Colecta de la fauna megabentónica de la zona de estudio
8.2 Trabajo de laboratorio
8.2.1 Índice de llenado (ILL) y estado de digestión de las presas del estómago e intestino
8.2.2 Identificación de las presas del contenido estomacal y de la fauna bentónica en la zona de estudio
8.3 Trabajo de gabinete
8.3.1 Estructura de tallas y sexo
8.3.2 Calidad del inventario
8.3.3 Descripción de los hábitos alimentarios de A. narinari
8.3.4 Estrategia de alimentación del depredador y los tipos de presa
8.3.5 Análisis de la repartición de recursos de A. narinari
8.3.6 Caracterización de la fauna megabentónica de la zona de estudio
8.3.7 Conocimiento Ecológico Local (CEL) de la dieta de A. narinari
8.3.8 Comparación entre la dieta de A. narinari y las posibles presas presentes en el área de estudio
9. Resultados
9.1 Generalidades de los organismos de A. narinari
9.1.1 Estructura de tallas
9.1.2 Índice de llenado (ILL) y estado de digestión
9.1.3 Calidad de inventario
9.2 Dieta
9.2.1 Dieta general
9.2.2 Descripción de la dieta de hembras y machos, y por grupos de tallas
9.3 Estrategia de alimentación del depredador y los tipos de presa
9.4 Análisis de la repartición de recursos de A. narinari de diferente talla y sexo
9.5 Características de los puntos de muestreo y de la fauna megabentónica
9.5.1 Descripción de las características de los puntos de muestreo
9.5.2 Caracterización de la fauna megabentónica de los puntos de muestro
9.6 Conocimiento Ecológico Local (CEL) de la dieta de A. narinari
9.7 Comparación entre la dieta de A. narinari y las posibles presas presentes en el área de estudio
10. Discusión

11. Conclusión
12. Literatura citada
13. Anexos


12.
- Artículo con arbitraje
*Solicítelo con su bibliotecario/a
Seasonal and spatial trends of Mayan octopus, Octopus maya, population dynamics from Campeche, Mexico
Markaida Aburto, Unai ; Méndez Loeza, Iván (coaut.) ; Rosales Raya, Martha Laura (coaut.) ;
Contenido en: Journal of the Marine Biological Association of the United Kingdom Vol. 97, no. 8 (December 2017), p. 1663-1673 ISSN: 0025-3154
Nota: Solicítelo con su bibliotecario/a
Resumen en: Inglés |
Resumen en inglés

High plasticity in cephalopod populations shows dramatic changes in their biological traits. Commercial catches of Mayan octopus (Octopus maya) in six localities of the state of Campeche, Mexico, were sampled monthly for five consecutive fishing seasons (2005–2009) in order to describe variations in population structure and maturation. Octopus maya grows and matures during the fishing season, from August to December. Spent individuals predominate in January and February, revealing a year-long life cycle. However, the presence of a few spent females in all months sampled suggests that a small part of the population shows an extended spawning period. Overall sex ratios did not significantly shift from the expected 1:1 in most samples. Males are mostly mature while the majority of females are immature during the season. Use of illegal fishing gears (spear diving or pots) in central localities accounts for a larger share in mature females. Octopus size showed large interannual and geographic differences. Females mature at a larger size (1024 g body weight, BW; 124 mm mantle length, ML) than males (484 g BW; 91 mm ML). Size at maturity in both sexes varies more between seasons than between localities. Female ML at maturity is larger than the current minimum legal size and implications for current octopus fishing regulations are discussed.


13.
- Artículo con arbitraje
Cephalopods of Pacific Latin America
Markaida Aburto, Unai ; Gilly, William F. (coaut.) ;
Contenido en: Fisheries Research Vol. 173, Part2 (January 2016), p. 113–121 ISSN: 0165-7836
Resumen en: Inglés |
Resumen en inglés

Cephalopod fisheries have experienced outstanding growth in Latin America during the last quartercentury, increasing from 0.5% to 7% of total Latin American landings since 1990. Its waters account todayfor a third of world cephalopod catches, with about two-thirds of this total being landed by Latin American countries and the remainder by East Asian countries. The ommastrephid squids Dosidicus gigas and Illexargentinus have led catches worldwide, while Doryteuthis gahi is the most important loliginid. Mexico,Peru, Chile, Argentina and the Falkland Islands (Malvinas) account for 98% of landings in the region.Pacific waters account for 60% of cephalopod landings in Latin America. Mexico, Peru and Chile accountfor virtually all landings from the Pacific. This has been largely achieved through switching the targets ofnational fishing fleets to squid. There are a variety of directed fisheries for octopus, some of which raiseconcerns about sustainability. Most landings are exported to East Asia and Europe, but local cephalopodsupply has increased. Aquaculture research on octopus in Chile is experiencing a mayor advance with international impact. Cephalopod research in Latin America is progressing in response developments in the fishing industry, especially in Mexico, Peru, and Chile. Nevertheless, cephalopod consumption is still relatively low andfisheries in these countries all depend strongly on foreign markets. In the smaller countries of Central America, as well as Colombia and Ecuador, cephalopods remain negligible as a marine resource.


14.
Artículo
Genetic evidence of the presence of Octopus mimus in the artisanal fisheries of octopus in Santa Elena Peninsula, Ecuador
Pliego Cárdenas, Ricardo ; Flores, Luis (coaut.) ; Markaida Aburto, Unai (coaut.) ; Barriga Sosa, Irene de los Ángeles (coaut.) ; Mora, Elba (coaut.) ; Arias, Evelyn (coaut.) ;
Contenido en: American Malacological Bulletin Vol. 34, no. 1 (June 2016), p. 51-55 ISSN: 2162-2698
Resumen en: Inglés |
Resumen en inglés

The geographic distribution of Octopus mimus Gould, 1852 is unclear, as most records are restricted to coastal localities of Peru and Chile, and some references have mentioned its presence off Central America. It is unknown whether this octopus is found off Ecuador as two previous unpublished records have suggested. The aim of the present study is to identify genetically the main octopus captured in a marine protected area known as Reserva de Produccion Faunistica Marino-Costera Puntilla de Santa Elena (REMACOPSE) off the Santa Elena peninsula, Ecuador. Samples collected from the local fishery were used to test the presence of this species based on the sequences of three mitochondrial markers and using a Bayesian approach. The phylogenetic analysis confirms that O. mimus inhabits the REMACOPSE. The results also indicate that the octopus specimens captured in the fishery from this marine protected area, are more closely related to O. mimus specimens from Central America than those from South America. The genetic identification of two groups of O. mimus could be associated with the different marine environmental conditions of the two biogeographic provinces. The finding in this study represents an important step for posterior research on the biology and fishery of octopus in Ecuador.


15.
- Artículo con arbitraje
Prolonged decline of jumbo squid (Dosidicus gigas) landings in the Gulf of California is associated with chronically low wind stress and decreased chlorophyll a after El Niño 2009–2010
Robinson, Carlos J. ; Gómez Gutiérrez, Jaime (coaut.) ; Markaida Aburto, Unai (coaut.) ; Gilly, William F. (coaut.) ;
Contenido en: Fisheries Research Vol. 173, Part 2 (January 2016), p. 128–138 ISSN: 0165-7836
Resumen en: Inglés |
Resumen en inglés

Dosidicus gigas (jumbo or Humboldt squid) is an ecologically relevant predator in the Gulf of California, Mexico, where it supports an economically valuable fishery. The commercial jumbo squid fishery in the Gulf declined steeply after an El Niño event in 2009–2010, and subsequent landings have remained at historically low levels in the relevant squid fishing centers (Guaymas, Sonora, and Santa Rosalía, Baja California Sur). In this paper, we examined wind speed and chlorophyll a concentrations on the jumbo squid fishing grounds as factors that would be expected to be relevant to this prolonged period of low landings. Analysis from local weather stations, remote sensing, and fishery data showed that low jumbo squid landings from 2010 to 2015 occurred during a period of abnormally weak winter/spring winds and extremely low chlorophyll a concentrations off the East Guaymas Basin. Results indicate that the squid fishing area in the Guaymas region has been chronically impoverished during this period, and that this area may no longer be a productive habitat for jumbo squid. In response to this decreased productivity, size-at-maturity of jumbo squid showed a drastic decrease over the same period. Results are compared with the effect of El Niño 1997–1998 on the jumbo squid fishery and size-at-maturity of this species in the Gulf of California. The key difference between the recovery phases for El Niño 1997–1998 versus El Niño 2009–2010 was the anomalously low wind intensity as measured in the Guaymas fishing area after 2009.


16.
Libro
Implementación de señuelos artificiales en la pesca de pulpo al garete / Unai Markaida, Iván Méndez Loeza y Almendra Rodríguez Domínguez
Markaida Aburto, Unai ; Méndez Loeza, Iván (coaut.) ; Rodríguez Domínguez, Almendra (coaut.) ;
Campeche, Campeche, México : El Colegio de la Frontera Sur :: Fundación Produce Campeche , 2015
Clasificación: EE/594.56097264 / M3
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Índice

El pulpo Octopus maya
Historia de (a pesquería de pulpo en Campeche
Pesca de pulpo con señuelos
Pesca de pulpo al garete en Campeche
Unidad de pesca
El arte de pesca
La camada en la pesca de pulpo
Justificación
Señuelos artificiales
Conclusiones
Agradecimientos
Referencias bibliográficas


17.
Tesis - Maestría
Unidades domésticas y pesquerías en Isla Arena, Campeche / Monserrat García Sámano
García Sámano, Monserrat (autora) ; Gurri García, Francisco D. (director) ; Molina Rosales, Dolores Ofelia (asesora) ; Markaida Aburto, Unai (asesor) ;
Lerma, Campeche, México : El Colegio de la Frontera Sur , 2015
Disponible en línea
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Índice

Capítulo I
Introducción
Antecedentes
Campeche e Isla Arena
Isla Arena
El Ciclo de Actividades en Isla Arena
Justificación
Pregunta de Investigación
Objetivo General
Objetivos Particulares
Metodología
Capítulo II
Resumen
Introducción
Materiales y Métodos
Resultados
Discusión
Referencias
Capítulo III
Conclusiones
Literatura citada
Anexos
Anexo 1
Anexo 2


18.
- Artículo con arbitraje
PDF PDF
Resumen en: Inglés |
Resumen en inglés

Two hundred sixty-one octopuses were obtained from August 2006 to June 2007 in Bahía de Los Angeles, BC, Mexico. Sizes ranged from 58–190 mm in mantle length. Diet was determined from 3 sources: the digestive tract analysis (hard rests), accumulations of hard prey remaining in refuges, and live prey present during capture. Ripe females had the greatest fullness weight index (FWI) whereas spawning/spent females had the lowest. During the spring, female and male octopuses showed the greatest FWI, whereas in summer they showed the lowest, coinciding with the spawning/spent stage. A total of 76 prey items from 8 phyla were found, with Mollusca being the most important phylum and xanthid crabs the most important prey year-round. During autumn and winter, more bivalves were consumed, whereas more crabs were consumed in spring. Males fed mainly on crabs during all gonad development stages, but spent males fed mostly on molluscs. In contrast, females fed mostly on molluscs, except ripe females, which included more crabs in their diet. The octopus Octopus bimaculatus appears to be a specialist consumer, and this selectivity could be a consequence of different energetic demands of each sex during the gonad ripening process.


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Resumen en: Inglés |
Resumen en inglés

Squid of the genus Lolliguncula Steenstrup, 1881 are small bodied, coastal species capable of tolerating low salinity. Lolliguncula sp. are found exclusively in the New World, although only one of the four recognized species (Lolliguncula brevis) occurs in the Atlantic Ocean. Preliminary morphological analyses suggest that Lolliguncula brevis populations in the North and South Atlantic may represent distinct species. The principal objective of the present study was to verify the phylogenetic relationships within the genus and test for the presence of possible cryptic species. Both gene and species tree topologies indicated that Lolliguncula brevis specimens from the North and South Atlantic represent distinct phylogenetic clades. In contrast with previous studies, L. panamensis was identified as the basal species of the genus. Our results provide important insights into the phylogenetic relationships among the Lolliguncula specimens analyzed, and confirm the genetic separation of Lolliguncula brevis populations of the North and South Atlantic at the level of sister species.


20.
- Capítulo de libro con arbitraje
*Solicítelo con su bibliotecario/a
Dosidicus gigas, humboldt squid
Rui, Rosa ; Yamashiro, Carmen (coaut.) ; Markaida Aburto, Unai (coaut.) ; Rodhouse, Paul G. K. (coaut.) ; Waluda, Claire M. (coaut.) ; Salinas Zavala, César Augusto (coaut.) ; Keyl, Friedemann (coaut.) ; O´Dor, Ron (coaut.) ; Stewart, Julia S. (coaut.) ; Gilly, William F. (coaut.) ;
Contenido en: Advances in squid biology, ecology and fisheries: myopsid squids New York : Nova Science Publishers, 2013 p. 169-206 ISBN:1-62808331X, 978-1628083316
Nota: Solicítelo con su bibliotecario/a
Resumen en: Inglés |
Resumen en inglés

Dosidicus gigas (Humboldt or jumbo squid) (Orbigny, 1835) is the largest ommastrephid squid, reaching up to 1.2m mantle length and 65kg in weight. This pelagic squid is endemic to the eastern Pacific Ocean and is particularly abundant in the highly productive waters of the California and Humboldt Current systems, and the Costa Rica Dome upwelling region. The intra-specific population structure of D. gigas is complex, since this species quickly responds to environmental variability driven by El Niño and LaNiña events in both current systems by rapidly changing its biological characteristics, such as somatic and reproductive investment. Oocyte development is asynchronous and the potential fecundity averages around 18–21 million oocytes; the maximum value estimated (32 million oocytes) is the largest ever recorded for any cephalopod so far. Hatching occurs between 6 to 9 days after fertilization at 18°C, but temperatures below 15°C and above 25°C do not allow complete embryonic development. D. gigas passes through a posthatching paralarval stage called the rhynchoteuthion and during this stage the two tentacles are fused into a well-developed proboscis. During the paralarval and subsequent juvenile stages Humboldt squid have a monthly growth rate of up to 80 mm in mantle length, and grow up 60 mm per month in the later stages. This is the highest growth rate reported for any cephalopod species, and enables this species to reach the reported maximum mantle lengths in a short lifespan (12 to 24 months). Although the lack of population structure across its large range suggests a high level of gene flow and substantial horizontal migration, specific migratory pathways in the Pacific Ocean have not yet been demonstrated. Long-distance migration is an important element in the lifehistory of Humboldt squid and may be associated with differential growth rates and size and at full maturity.

The recent poleward range expansion of D. gigasis likely associated with warmer periods following El Niño/La Niña events, an ongoing expansion of the oxygen minimum zone (OMZ) in the Eastern Pacific, and changing ecosystem interactions including food availability, competition and predation. Humboldt squid feed primarily on small mesopelagic (midwater) fishes, crustaceans, and cephalopods as well as commercially important coastal fishes and squid in the recently expanded range. Typical daily behavior involves vertical migrations from near-surface waters at nighttime to mesopelagic depths above or within the OMZ during the daytime. Whereas the OMZ restricts the depth distribution of many competing vertebrate predators to the upper surface layers due to limited hypoxia tolerance, D. gigas circumvents similar restrictions via metabolic suppression. In addition to its critical role both as prey and predator in the eastern Pacific, D. gigas is an economically important species and the target of what has recently become the world’s largest invertebrate fishery.


21.
- Artículo con arbitraje
*Solicítelo con su bibliotecario/a
Extreme plasticity in life-history strategy allows a migratory predator (jumbo squid) to cope with a changing climate
Gilly, William F. ; Hoving, Henk-Jan T. (coaut.) ; Markaida Aburto, Unai (coaut.) ; Benoit Bird, Kelly J. (coaut.) ; Brown, Zachary W. (coaut.) ; Daniel, Patrick (coaut.) ; Fieldk, John C. (coaut.) ; Parassenti, Li Z. (coaut.) ; Liu, Bilin (coaut.) ; Campos, Bernardita (coaut.) ;
Contenido en: Global Change Biology Vol. 19, no. 7 (July 2013), p. 2089–2103 ISSN: 1365-2486
Nota: Solicítelo con su bibliotecario/a
Resumen en: Inglés |
Resumen en inglés

Dosidicus gigas (jumbo or Humboldt squid) is a semelparous, major predator of the eastern Pacific that is ecologically and commercially important. In the Gulf of California, these animals mature at large size (>55 cm mantle length) in 1–1.5 years and have supported a major commercial fishery in the Guaymas Basin during the last 20 years. An El Niño event in 2009–2010, was accompanied by a collapse of this fishery, and squid in the region showed major changes in the distribution and life-history strategy. Large squid abandoned seasonal coastal-shelf habitats in 2010 and instead were found in the Salsipuedes Basin to the north, an area buffered from the effects of El Niño by tidal upwelling and a well-mixed water column. The commercial fishery also relocated to this region. Although large squid were not found in the Guaymas Basin from 2010 to 2012, small squid were abundant and matured at an unusually small mantle-length (<30 cm) and young age (approximately 6 months). Juvenile squid thus appeared to respond to El Niño with an alternative life-history trajectory in which gigantism and high fecundity in normally productive coastal-shelf habitats were traded for accelerated reproduction at small size in an offshore environment. Both small and large mature squid, were present in the Salsipuedes Basin during 2011, indicating that both life- history strategies can coexist. Hydro-acoustic data, reveal that squid biomass in this study area nearly doubled between 2010 and 2011, primarily due to a large increase in small squid that were not susceptible to the fishery. Such a climate-driven switch in size-at-maturity may allow D. gigas to rapidly adapt to and cope with El Niño. This ability is likely to be an important factor in conjunction with longerterm climate-change and the potential ecological impacts of this invasive predator on marine ecosystems.


22.
- Artículo con arbitraje
Food in early life stages of Dosidicus gigas (Cephalopoda: Ommastrephidae) from the Gulf of California, Mexico
Camarillo Coop, Susana ; Salinas Zavala, César Augusto (coaut.) ; Lavaniegos Espejo, Bertha Eugenia (coaut.) ; Markaida Aburto, Unai (coaut.) ;
Contenido en: Journal of the Marine Biological Association of the United Kingdom Vol. 93, no. 07 (November 2013), p. 1903-1910 ISSN: 0025-3154
Resumen en: Inglés |
Resumen en inglés

The digestive system of 36 paralarvae and 150 juvenile Dosidicus gigas were analysed to determine the diet. The early life stages were collected in the central and south region of the Gulf of California during different years and ranged in dorsal mantle length (ML) from 2.8 to 120.5 mm. The food content was separated first into identifiable material (IM) and non-identifiable material (NIM). All paralarvae contained only NIM stored mainly in the caecum rather than stomach. Juvenile squid feed on nine different prey types: euphausiids, copepods, amphipods, unidentified crustaceans, fishes, cephalopods, pteropods, bivalves and polychaetes. The IM were found mainly in the stomachs of juveniles with increasing number and diversity of prey in a function of increasing squid body size. In fact, juveniles from 60 to 120 mm ML had high stomach fullness percentages in half full and completely full stomachs suggesting improvement of swimming and hunting behaviour as they grow.


Resumen en: Inglés |
Resumen en inglés

The family Loliginidae Lesueur, 1821, is currently considered to include seven genera and approximately 50 species of neritic and coastal squids. These commercially important species occur in tropical and temperate coastal waters around the world. The taxonomy of the family has been revised a number of times in recent years, focusing in particular on genera such as Doryteuthis, Sepioteuthis, Alloteuthis, and Uroteuthis, which are represented by populations in the New World, Oceania, Europe/Africa, and Asia. However, no detailed phylogenetic analysis is available for the loliginids of the southern Atlantic, in particular the genus Doryteuthis. The present molecular study analyzed 81 loliginid taxa from around the world. The partial sequencing of the mitochondrial 16S and Cytochrome Oxidase I genes, and the nuclear rhodopsin gene revealed a number of important patterns, recovering the monophyletic status of the majority of the genera and revealing possible cryptic species in Doryteuthis plei D. pealei, Uroteuthis duvauceli and Sepioteuthis lessoniana.


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Resumen en: Inglés |
Resumen en inglés

The genus Octopus occurs in tropical and temperate oceanic waters throughout the world, and currently includes 112 species, although the phylogenetic relationships among the different taxa are still poorly understood. The cosmopolitan Octopus vulgaris is one of the most widely analyzed cephalopods in genetic studies, primarily because of its ample range and the problems associated with the morphological identification of specimens, which indicate the possible existence of a species complex with a worldwide distribution. Two large-bodied octopus species—O. vulgaris and Octopus insularis—are found in the western South Atlantic. The limits of the geographical range of the O. insularis are still unclear. The current study is based on a phylogeographic analysis of the 2 species in the South Atlantic, with the objective of confirming their monophyletic status and the limits of their geographical distribution in this region. The analyses were based on the mitochondrial genes 16S rDNA and Cytochrome Oxidase subunit I (COI). The topologies generated for both genes confirmed the monophyletíc status of the 2 species. In the case of O. vulgaris, it was possible to confirm the monophyletic status of the specimens from this region relative to those of other areas around the world, although 3 distinct haplogroups were clearly differentiated, corresponding to the Americas, Europe and Africa, and Asia. The differentiation among these 3 groups may be determined by the limitations of the dispersal of paralarvae among continents. Further studies are needed to confirm the possible occurrence of distinct groups in the western South Atlantic, as well as the influence of oceanic currents on the phylogeographical distribution of O. vulgaris on the Brazilian coast.


25.
Tesis - Maestría
Validación del uso de incrementos de crecimiento en estructuras duras para determinar la edad de Octopus maya (Voss y Solís, 1966) / Almendra Rodríguez Domínguez
Rodríguez Domínguez, Almendra ; Markaida Aburto, Unai (turor) ; Rosas Vázquez, Carlos (asesor) ; Méndez Loeza, Iván (asesor) ;
San Francisco de Campeche, Campeche, México : El Colegio de la Frontera Sur , 2013
Clasificación: TE/594.56 / R6
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Resumen en español

Validación del uso de incrementos de crecimiento en estructuras duras para determinar la edad de Octopus maya (Voss y Solís, 1966) Resumen: Se emplearon organismos de edad conocida de Octopus maya para validar los incrementos en estiletes, picos y lentes. Se analizaron las estructuras de treinta y dos organismos criados en cautiverio con edades comprendidas entre 124 y 233 días. Se montaron secciones transversales de los estiletes en gelatina de glicerol, los picos se cortaron sagitalmente para analizar sus paredes laterales y las lentes se procesaron mediante técnicas histológicas y posteriormente montadas en resina. En los picos sólo los dos grupos de pulpos más jóvenes presentaron una relación cercana a la edad, en el resto de los grupos no se logró validar la deposición diaria de incrementos debido al desgaste de los picos. Las lentes no presentaron un patrón claro en la deposición de incrementos por lo que su periodicidad no pudo validarse. Los estiletes fueron la estructura más eficiente para evaluar la edad de los organismos, al presentar una alta precisión en los conteos de los incrementos entre lectores y una relación cercana entre la edad y el número de incrementos en todos los individuos. Por lo tanto, se recomienda el uso de estiletes para realizar evaluaciones de edad de Octopus maya.

Índice

Resumen
Capítulo
I. Introducción
A. Importancia económica de cefalópodos
B. Características generales de cefalópodos
C. Octopus maya
a. Importancia económica
b. Características de Octopus maya
D. Crecimiento
a. Importancia en pesquerías
b. Cefalópodos
i. Estructuras duras
ii. Fases de crecimiento
iii. Métodos de estudio
II. Antecedentes A. Estiletes
B. Picos
C. Lentes
III. Justificación, Objetivos e Hipótesis
Capítulo II
Validation of growth increments in stylets, beaks and lenses as ageing tools in Octopus maya
Abstract
Introduction
Materials and Methods
Specimen collection
Structure preparation
Data analysis
Results
Discussion
Stylets
Beaks
Eye lenses
Aknowledgements
References
Tables
Figure Legends
Capítulo III
I. Conclusiones
Literatura Citada


26.
- Artículo con arbitraje
Validation of growth increments in stylets, beaks and lenses as ageing tools in Octopus maya
Rodríguez Domínguez, Almendra ; Rosas Correa, Carmen Olivia (coaut.) ; Méndez Loeza, Iván (coaur.) ; Markaida Aburto, Unai (coaut.) ;
Contenido en: Journal of Experimental Marine Biology and Ecology Vol. 449 (November 2013), p. 194–199 ISSN: 0022-0981
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Resumen en: Inglés |
Resumen en inglés

Octopus hard structures have recently been used as ageing tools. Thirty-two Octopus maya were raised in captivity in four age groups, ranging from 124 to 233 days old. Their stylets, beaks and eye lenses were analyzed in order to validate the periodicity of growth increments during all the octopus life. Transverse sections of stylets were mounted in glycerin jelly, beaks were sagitally cut to analyze their lateral walls and eye lenses were processed by histological techniques andmounted in resin. Growth increments in each structurewere observed and counted under a microscope. Stylet increments were successfully validated as their counts were closely related to age in days. Beak increments from the two younger age groups showed a close relationship with age, suggesting a daily deposition. However, persistence of lower increment counts strongly suggests that not all growth increments could be counted, probably due to erosion during feeding. Eye lens increment counts did not show a relation with age, although periodicity, if any, might be subdaily. The use of stylets is recommended for O. maya growth and ageing studies as they also showed a high precision in increment counts between readers.


27.
- Artículo con arbitraje
Behavioral ecology of jumbo squid (Dosidicus gigas) in relation to oxygen minimum zones
Stewart, Julia S. ; Fieldb, John C. (coaut.) ; Markaida Aburto, Unai (coaut.) ; Gilly, William F. (coaut.) ;
Contenido en: Deep Sea Research Part II: Topical Studies in Oceanography doi.org/10.1016/j.dsr2.2012.06.005 (28 June 2012), p. 1-12 ISSN: 0967-0645
Resumen en: Inglés |
Resumen en inglés

Habitat utilization, behavior and food habits of the jumbo or Humboldt squid, Dosidicusgigas, were compared between an area recently inhabited in the northern California Current System (CCS) and a historically established area of residence in the Gulf of California (GOC). Low dissolved oxygen concentrations at midwater depths define the oxygenminimum zone (OMZ), an important environmental feature in both areas. We analyzed vertical diving behavior and diet of D. gigas and hydrographic properties of the water column to ascertain the extent to which squid utilized the OMZ in the two areas. The upper boundary of the OMZ has been shoaling in recent decades in the CCS, and this phenomenon has been proposed to vertically compress the pelagic environment inhabited by aerobic predators. A shoaling OMZ will also bring mesopelagic communities into a depth range with more illumination during daytime, making these organisms more vulnerable to predation by visual predators (i.e. jumbosquid). Because the OMZ in the GOC is considerably shallower than in the CCS, our study provides insight into the behavioral plasticity of jumbosquid and how they may respond to a shoaling OMZ in the CCS. We propose that shoaling OMZs are likely to be favorable to jumbosquid and could be a key indirect factor behind the recent range expansion of this highly migratory predator.


28.
Tesis - Maestría
Edad y crecimiento del pulpo rojo Octopus maya (Voss y Solis, 1966) por medio de la lectura de incrementos en el estilete / Natalia Celia Albarrán Mélzer
Albarrán Mélzer, Natalia Celia ; Markaida Aburto, Unai (tutor) ; De Jesús Navarrete, Alberto (asesor) ; Mendoza Carranza, Manuel (asesor) ;
San Francisco de Campeche, Campeche, México : El Colegio de la Frontera Sur , 2010
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Resumen en español

Se estimó la edad y se describió el crecimiento del pulpo rojo, Octopus maya, por medio de la lectura de los incrementos de crecimiento depositados en los estiletes de 100 organismos seleccionados de cinco puertos de desembarque pesqueros en el litoral de Campeche, México, durante 2007. La técnica a mano alzada fue utilizada para el corte de los incrementos; los estiletes fueron preservados en formol al 4% e incluidos en un portaobjetos con gelatina de glicerol. La relación encontrada entre la longitud total (LTE) y el diámetro 2 máximo del estilete (DME) con la longitud de manto de los organismos (r²= 0.79 2 en LTE y r²= 0.80 en DME) es directamente proporcional al cuerpo somático del pulpo. Esto podría sugerir que los estiletes del pulpo rojo son buenos indicadores del crecimiento. Se identificaron cuatro zonas de incrementos de crecimiento en el estilete y dos tipos de patrones de lectura. La relación entre la 2 longitud del manto y la edad para ambos sexos fue mayor (r²= 0.80), el modelo logístico fue el que mejor se ajustó a los parámetros de crecimiento. Los machos maduran antes que las hembras, iniciando a los 89 - 144 días y de 99 - 157 días en hembras. La tasa de crecimiento diario en talla y peso total para hembras fue de 0.59 mm/día, 18.7 g/día y en machos de 0.57 mm/día, 17.9 g/día.

Índice

Lista de Figuras
Lista de Tablas
Resumen
1. Introducción
1.1. Antecedentes
1.1.1. Biología de Octopus maya
1.1.2. Ubicación taxonómica
1.1.3. Pesquería de la especie
1.1.4. Estudios de edad y crecimiento en pulpos
1.1.5. Estudios de edad y crecimiento en estructuras duras
1.1.6. Justificación
2. Objetivos
2.1. Objetivo general
2.2. Objetivos particulares
3. Hipótesis
4. Área de Estudio
5. Materiales y Métodos
5.1. Trabajo de campo
5.2. Trabajo de laboratorio
5.2.1. Preparación y montaje de las secciones del estilete
5.2.2. Lectura de los incrementos
5.3. Análisis de datos
5.3.1. Estructura de talla y peso
5.3.2. Relación entre dimensiones del estilete y el pulpo rojo
5.3.3. Estimación de la edad
5.3.4. Precisión de las lecturas
5.3.5. Patrón del crecimiento
6. Resultados
6.1. Estructura de talla y peso
6.2. Estilete
6.2.1. Relación entre dimensiones del estilete y el pulpo rojo
6.3. Estimación de la edad
6.3.1. Microestructura del estilete y lectura de incrementos
6.4. Precisión de lecturas
6.5. Estimación del crecimiento
6.5.1. Relación longitud de manto y peso con la edad
6.5.2. Tasas de crecimiento
6.5.3. Fechas de nacimiento
7. Discusión
7.1. Estilete
7.1.1. Preservación y preparación de los estiletes
7.1.2. Relación entre dimensiones del estilete y el pulpo rojo
7.2. Estimación de la edad
7.2.1. Microestructura del estilete y lectura de incrementos
7.2.2 Deposición periódica de los incrementos
7.3. Estimación del crecimiento
7.3.1. Relación longitud de manto y peso con la edad
7.3.2. Tasas de crecimiento
7.3.3. Fechas de nacimiento
8. Conclusiones
9. Literatura Citada
10. Anexo


29.
Artículo
Food and feeding habits of the blue shark Prionace glauca caught off Ensenada, Baja California, Mexico, with a review on its feeding
Markaida Aburto, Unai ; Sosa Nishizaki, Óscar (coaut.) ;
Contenido en: Journal of the Marine Biological Association of the United Kingdom Vol. 90, no. 05 (2010), p. 977-994 ISSN: 0025-3154
Resumen en: Inglés |
Resumen en inglés

Stomach contents of 893 blue shark (Prionace glauca) caught off Ensenada, Todos Santos Bay, Baja California, from 1995 to 1997 were analysed. 614 had identifiable food remains. A large variety of pelagic cephalopods occurred in 55.5% of all stomachs and accounted for 46.2% of all prey and 84% by estimated weight of stomach contents. The most abundant (17%) and frequent (32%) was Histioteuthis heteropsis and the most important by estimated weight (22%) was ‘Gonatus californiensis’. Argonauta spp. and Vampyroteuthis infernalis were also abundant prey. A pair of beaks of giant squid Architeuthis sp. constitutes the first record for Mexican waters. Feeding habits and the probability of scavenging on mesopelagic cephalopods is discussed. The single most abundant prey was the pelagic, red crab Pleuroncodes planipes (41.7%). Other prey included teleost fish, amniotes and floating items. Diet varied greatly between months with no clear seasonal pattern. Tiny diet differences due to shark size or sex were inconclusive. A thorough review of studies on blue sharks stomach contents analysis is given. Blue shark feed on a large variety of passive pelagic prey, mainly mesopelagic cephalopods, that could be preyed upon as well as scavenged. Depletion of this predator due to overfishing may be leading to unknown cascading top-down effects in the mesopelagic realm.


30.
Artículo
Horizontal movements, vertical-habitat utilization and diet of the jumbo squid (Dosidicus gigas) in the Pacific Ocean off Baja California Sur, Mexico
Bazzino, Gastón ; Gilly, William F. (coaut.) ; Markaida Aburto, Unai (coaut.) ; Salinas Zavala, César Augusto (coaut.) ; Ramos Castillejos, Jorge (coaut.) ;
Contenido en: Progress in Oceanography Vol. 86, no. 1-2 (July-August 2010), p. 59-71 ISSN: 0079-6611
Resumen en: Inglés |
Resumen en inglés

We deployed four pop-up archival-transmitting (PAT) tags on jumbo squid (Dosidicus gigas) collected in the Pacific Ocean off the main entrance to Magdalena Bay on the Baja California peninsula in June 2005. This is the first successful deployment of PAT tags on jumbo squid in an area outside the Gulf of California. Summary data were obtained through the ARGOS satellite system for three of the tags; the fourth tag was physically recovered. All of the tagged squid tended to remain on the shallow continental shelf for several days after tagging and then moved offshore into deeper water. Three of the four squid appeared to migrate in a general southerly direction while the fourth remained offshore of Magdalena Bay. All of the squid spent most daylight hours at depths that were associated with the hypoxic oxygen minimum layer, and at night they spent a majority of time in the upper 50 m of the water column. Stomach content analysis and tag temperature–depth data during the first days after tagging revealed that the squid were feeding on pelagic red crabs (Pleuroncodes planipes) and several larger, neritic fishes over the continental shelf off Magdalena Bay during a seasonal nearshore upwelling. Comparison of our results with those previously collected in the Gulf of California reveal that Dosidicus gigas can vary its behavior and diet to suit local environmental conditions. This adaptability is likely to be an important factor in the ability of D. gigas to invade and colonize new areas.


31.
- Artículo con arbitraje
PDF PDF
Resumen en: Inglés |
Resumen en inglés

Dosidicus gigas and Sthenoteuthis oualaniensis (Teuthoidea: Ommastrephidae: Ommastrephinae) are abundant, ecologically important squid that co-occur in the eastern tropical Pacific. Little is known about the genetic basis of population structure in either species, although the presence of 2 species within S. oualaniensis has been suggested. We report here on a comparative population genetic study of D. gigas and S. oualaniensis using the mitochondrial marker NADH dehydrogenase subunit 2. Despite the high potential for dispersal in these active swimmers, both species exhibit a distinct biogeographic break at 5 to 6° N. S. oualaniensis contains multiple deeply divergent, geographically segregated clades, whereas D. gigas shows only mild divergence between northern and southern hemisphere populations. We suggest that dispersal and genetic mixing across the eastern tropical Pacific may be impeded by both oceanographic and ecological factors.


32.
Tesis - Maestría
Pesquería de la raya pinta Aetobatus narinari en el sureste del Golfo de México: tasas de captura y estructura poblacional / Elizabeth Cuevas Zimbrón
Cuevas Zimbrón, Elizabeth ; Pérez Jiménez, Juan Carlos (tutor) ; Castillo Géniz, José Leonardo (asesor) ; Markaida Aburto, Unai (asesora) ;
San Francisco de Campeche, Campeche, México : El Colegio de la Frontera Sur , 2010
Clasificación: TE/338.37274 / C8
Cerrar
SIBE Campeche
ECO040004197 (Disponible)
Disponibles para prestamo: 1
Cerrar
SIBE Chetumal
ECO030007229 (Disponible)
Disponibles para prestamo: 1
Cerrar
SIBE San Cristóbal
ECO010014761 (Disponible) , ECO010014725 (Disponible)
Disponibles para prestamo: 2
Cerrar
SIBE Tapachula
ECO020011572 (Disponible)
Disponibles para prestamo: 1
Cerrar
SIBE Villahermosa
ECO050004450 (Disponible)
Disponibles para prestamo: 1
PDF
Índice | Resumen en: Español |
Resumen en español

Se conoce poco sobre las pesquerías de batoideos en aguas Mexicanas, lo que ha obstaculizado establecer medidas de manejo. Esto incluye a la pesquería dirigida sobre la raya Aetobatus narinari en el sureste del Golfo de México. De enero a julio de 2009 (temporada completa de la pesquería de A. narinari) se realizaron entrevistas a los pescadores y monitoreos de las operaciones diarias de cuatro embarcaciones menores de dos localidades (Campeche y Seybaplaya) del Estado de Campeche. Los pescadores de ambas localidades (separadas por 30 km sobre la línea de costa) difirieron en: a) la distancia de la costa y extensión de la zona de pesca, b) la duración de los lances y viajes de pesca, y c) la operación de la red en la columna de agua (deriva superficial y fija de fondo). Se encontró que existe una segregación espacial por tallas y sexo determinada por la distancia de la costa. Las rayas (1204 ±225.3 mm AD) capturadas frente a Campeche, 30–50 km de la costa, fueron significativamente mayores que las rayas (924 ±206.5 mm AD) capturadas frente a Seybaplaya, 8–15 km de la costa. Las capturas estuvieron dominadas por machos en Campeche (105 y 52 hembras) y por hembras en Seybaplaya (383 y 221 machos). La tasa de captura de un pescador frente a Campeche (periodo enero-abril) fue de 6.6 ±4.9 rayas por lance, y de tres pescadores frente a Seybaplaya (periodo febrero-julio) fue de 3.0 ±2.9 rayas por lance. La operación pesquera fue predicha por el ciclo lunar y la velocidad del viento para uno y tres pescadores, respectivamente. Las tasas de captura frente a Seybaplaya fueron predichas por la identidad del pescador, la temporada de “nortes”, la temperatura superficial del mar (TSM) y por la interacción temporada de “nortes”*TSM. El número de rayas capturadas fue significativamente diferente de acuerdo con la identidad del pescador, la temporada de “nortes” y la TSM.

Este estudio muestra que tanto los factores ambientales como la percepción, preferencias y experiencia de los pescadores influyen en las tasas de captura y estructura poblacional; por lo que estos elementos deben ser considerados en estudios futuros sobre pesquerías de elasmobranquios.

Índice

1. Introducción
2. Hipótesis
3. Objetivo General
3.1. Objetivos Particulares
4. Área de Estudio
5. Material y Métodos
5.1. Descripción de la pesquería
5.2. Estructura poblacional de A. narinari
5.2.1. Distribución de tallas
5.2.2. Proporción sexual y proporción de estadios ontogénicos
5.3. Tasas de captura de A. narinari
5.4. Factores que predicen la operación pesquera y las tasas de captura
5.4.1. Conocimiento empírico del pescador
5.4.2. Modelo General Lineal (MGL)
5.4.2.1. Operación pesquera y factores ambientales
5.4.2.2. Tasas de captura y factores ambientales
5.5. Factores que determinan diferencias en el número de rayas capturadas (ANOVA)
6. Resultados
6.1. Descripción de la pesquería
6.1.1. Historia de la pesquería
6.1.2. Comercialización
6.1.3. Los pescadores de raya A. narinari
6.1.4. Equipos de pesca
6.1.5. Zonas y viajes de pesca
6.1.6. Estacionalidad de las capturas en el Estado de Campeche
6.1.7. Especies que son capturadas de manera incidental en las operaciones de pesca de A. narinari
6.2. Estructura poblacional de A. narinari
6.2.1. Distribución de tallas
6.2.2. Proporción sexual
6.2.3. Estadios ontogénicos
6.3. Tasas de captura de A. narinari
6.3.1. Campeche (Monitoreos)
6.3.2. Seybaplaya (Monitoreos)
6.4. Factores que predicen la operación pesquera y las tasas de captura
6.4.1. Conocimiento empírico del pescador
6.4.1.1. Factores bióticos
6.4.1.2. Factores ambientales
6.4.2. Modelo General Lineal (MGL)
6.4.2.1. Operación pesquera y factores ambientales
6.4.2.2. Tasas de captura y factores ambientales
6.5. Factores que determinan diferencias en el número de rayas capturadas (ANOVA)
7. Discusión
7.1. Estructura poblacional de A. narinari
7.2. Factores que predicen la operación pesquera y las tasas de captura
7.2.1. Operación pesquera y factores ambientales

7.2.2. Tasas de captura y factores ambientales
8. Conclusiones
9. Literatura Citada


33.
- Capítulo de libro con arbitraje
*Solicítelo con su bibliotecario/a
Las pesquerías
Flores Hernández, Domingo ; Markaida Aburto, Unai (coaut.) ; Pérez Jiménez, Juan Carlos (autor) ; Ramos Miranda, Julia (autora) ;
Disponible en línea
Contenido en: La biodiversidad en Campeche: estudio de estado / Guillermo J. Villalobos-Zapata y Jorge Mendoza Vega, coordinadores Distrito Federal, México : Comisión Nacional para el Conocimiento y Uso de la Biodiversidad : Gobierno del Estado de Campeche : Universidad Autónoma de Campeche : El Colegio de la Frontera Sur, 2010 p. 514-529 ISBN:978-607-7887-22-5
Cerrar
SIBE Campeche
37585-50 (Disponible)
Disponibles para prestamo: 1
Cerrar
SIBE Chetumal
37585-40 (Disponible)
Disponibles para prestamo: 1
Cerrar
SIBE San Cristóbal
37585-20 (Disponible)
Disponibles para prestamo: 1
Cerrar
SIBE Tapachula
37585-30 (Disponible)
Disponibles para prestamo: 1
Cerrar
SIBE Villahermosa
37585-60 (Disponible)
Disponibles para prestamo: 1
Nota: Solicítelo con su bibliotecario/a
Resumen en español

La pesca en el estado de Campeche es una de las actividades económicas más importantes. Toda la actividad pesquera costera se lleva a cabo desde Isla Arena, al norte; hasta Nuevo Campechito, al sur; e incluye los municipios de Tenabo, Calkiní, Campeche, Hecelchakán, Palizada, Carmen y Atasta (Gío-Argáez, 1996). El litoral de Campeche se divide en dos grandes zonas de pesca (Flores-Hernández et al., 1991; Flores-Hernández, 1994), con relación a sus características geomorfológicas y ecológicas que determinan la diversidad de comunidades marinas: la zona norte, que presenta condiciones marinas de la provincia carbonatada de la península de Yucatán y que incluye los litorales de Isla Arena hasta Punta Xen; y la zona sur, que se sitúa en la provincia deltáica de fuerte influencia estuarina, cuyos aportes dulceacuícolas y de sedimentos provienen del sistema fluvial Grijalva- Usumacinta y de la laguna de Términos e incluye al litoral desde Sabancuy hasta Nuevo Campechito.


34.
Tesis - Maestría
Pesquería de Dasyatis americana en el oeste del Banco de Campeche, México / José Alfredo Hernández López
Hernández López, José Alfredo ; Mendoza Carranza, Manuel (tutor) ; Pérez Jiménez, Juan Carlos (asesor) ; Markaida Aburto, Unai (asesor) ;
Villahermosa, Tabasco, México : El Colegio de la Frontera Sur , 2009
Clasificación: TE/597.35097263 / H4
Cerrar
SIBE Campeche
ECO040003956 (Disponible)
Disponibles para prestamo: 1
Cerrar
SIBE Chetumal
ECO030007040 (Disponible)
Disponibles para prestamo: 1
Cerrar
SIBE San Cristóbal
ECO010000408 (Disponible)
Disponibles para prestamo: 1
Cerrar
SIBE Tapachula
ECO020012433 (Disponible)
Disponibles para prestamo: 1
Cerrar
SIBE Villahermosa
ECO050003944 (Disponible)
Disponibles para prestamo: 1
PDF
Índice | Resumen en: Español |
Resumen en español

Se evaluaron los principales parámetros biológicos-pesqueros (abundancia relativa y estructura poblacional) de Dasyatis americana provenientes de la flota artesanal del puerto de San Pedro y San Pablo, Centla, Tabasco, durante febrero 2006 a marzo 2007. En total fueron analizados 115 viajes de pesca. El área de pesca fue dividida en dos (A y B), siendo el área A la zona donde se registro la mayor incidencia de eventos de pesca con un 94%, a su vez es la de más baja profundidad (10-40 m). El máximo CPUE para D. americana se observó en el mes de febrero de 2006 con 2.96 ±1.26 kg y la menor en agosto con 0.22 ±0.17 kg. Se muestrearon un total de 682 organismos de D. americana (287 hembras y 395 machos), siendo la proporción hembra: macho de 1:1.4. D. americana presentó dominancia de machos de los 45 a los 60 cm de ancho de disco (AD). Las hembras adultas dominaron a partir de los 85 cm de AD. En lo que respecta la talla (AD) con la profundidad de captura y la madurez de ambos sexos, se observa un ligero incremento del AD conforme aumenta la profundidad de pesca. La talla media de maduración L50, de hembras la obtuvieron a los 92 cm AD, mientras que los machos a los 52 cm de AD.

Índice

Índice de tablas
Índice de figuras
Agradecimientos
Resumen
Introducción
Objetivos
General
Específicos
Materiales y métodos
Resultados
Discusión
Literatura citada
Tablas
Figuras
Anexos
Hoja de envió del Articulo
Artículo sometido


35.
Artículo
Age, growth and maturity of jumbo squid (Dosidicus gigas d'orbigny, 1835) off the western coast of the Baja California Peninsula
Mejia-Rebollo, Arminda ; Quiñónez-Velázquez, Casimiro (coaut.) ; Salinas Zavala, César Augusto (coaut.) ; Markaida Aburto, Unai (coaut.) ;
Contenido en: California Cooperative Oceanic Fisheries Investigations Reports Vol. 49 (2008), p. 256-262 ISSN: 0575-3317
Resumen en: Inglés |
Resumen en inglés

Although jumbo squid (Dosidicus gigas) live off the western coast of Baja California, México, biological information for the species from this area is scarce.We processed the statoliths of 191 squid (144 females and 47 males) caught off western Baja California during 2004. The oldest male was 391 days old (mature at 690 mm dorsal mantle length,ML) and the oldest female was 433 days old (mature at 700 mm ML). Birth dates for both sexes were concentrated in January, indicative of a reproductive peak. Jumbo squid growth was best described by the logistic model. The largest females were larger (100 mm ML) and lived longer (1.4 months) than the largest males.The maximum daily growth rate in females was 2.09 mm per day (at 220 days; 407.6 mm ML) and in males was 2.1 mm per day (at 200 days; 365.9 mm ML). Finally,we conclude that squid from the Gulf of California grow faster than squid from off the western coast of Baja California.


36.
Artículo
Food and feeding of jumbo squid Dosidicus gigas in the central Gulf of California during 2005-2007
Markaida Aburto, Unai ; Gilly, William F. (coaut.) ; Salinas Zavala, César Augusto (coaut.) ; Rosas Luis, Rigoberto (coaut.) ; Booth, J. T. Ashley (coaut.) ;
Contenido en: California Cooperative Oceanic Fisheries Investigations Reports Vol. 49 (2008), 90-103 ISSN: 0575-3317

37.
Artículo
Oocyte development, fecundity and spawning strategy of large sized jumbo squid Dosidicus gigas (Oegopsida: Ommastrephinae)
Nigmatullin, Chingis M. ; Markaida Aburto, Unai (coaut.) ;
Contenido en: Journal of the Marine Biological Association of the United Kingdom Vol. 89, no. 4 (June 2009), p. 789-801 ISSN: 0025-3154
Resumen en: Inglés |
Resumen en inglés

Ovaries of 39 large jumbo squid Dosidicus gigas (415–875 mm mantle length (ML)) of different stages of maturity from the Gulf of California and Nicaragua were analysed. Oocyte development is asynchronous during female ontogenesis, with predominance (>85–90%) of small protoplasmic oocytes 0.1–0.2 mm in diameter for all stages of female maturity. Potential fecundity (PF) is determined at late immature stage II with average values around 18–21 million oocytes. The maximum PF estimated, 32 million oocytes, is so far the largest recorded for any cephalopod. PF is closely related to female size. Nicaraguan females, of smaller size (415–720 mm ML), show lower fecundity (5–15 million oocytes). Eggs were analysed in oviducts of mature females (540–875 mm ML), 7 from the Gulf of California and three females from Nicaragua. Eggs measured 0.9 × 1.1 mm in diameter and weighed 0.45 mg on average. The oviducts of the largest female (875 mm ML) held 1.2 million eggs, representing 4.6% of PF and no more than 14% of all vitelline oocyte stock of that squid. Variability in oviduct filling is very high and unrelated to ovary weight. However, a strong correlation was found between oviduct fullness and nidamental glands development. These observations suggest that spawning is extended and intermittent. A female spawns no less than half of the initial PF, and the minimal number of spawning activity events (egg batches) is roughly estimated at 8–12. During this terminal spawning stage females continue actively feeding and grow between egg-mass laying periods.


38.
Artículo
Diving behavior of sperm whales in relation to behavior of a major prey species, the jumbo squid, in the Gulf of California, Mexico
Davis, R.W. ; Jaquet, N. (coaut.) ; Gendron, D. (coaut.) ; Markaida Aburto, Unai (coaut.) ; Bazzino, G. (coaut.) ; Gilly, W. (coaut.) ;
Contenido en: Marine Ecology Progress Series Vol. 333 (2007), p. 291-302 ISSN: 0171-8630
PDF PDF
Resumen en: Inglés |
Resumen en inglés

Sperm whales occur worldwide and feed largely on meso- and bathypelagic squid, but little is known about the behavioral ecology of this predator and its prey. In the Gulf of California, sperm whales are thought to feed on the abundant jumbo (Humboldt) squid, an ecologically and commercially important species. In this study, we attached satellite-linked dive recorders to 5 sperm whales and pop-up archival transmitting tags to 3 jumbo squid in the same area and time period in order to record their diving behavior and movements. Most (91%) deep dives by whales ranged from 100 to 500 m (average 418 ± 216.0 m) and lasted 15 to 35 min (average 27 ± 9.1 min). During daytime hours, jumbo squid spent about 75% of the time in the 200 to 400 m depth range, and sperm whales showed a similar dive-depth preference. The vertical distribution pattern of squid changed during the night, with squid spending about half the time at depths of <200 m and the remainder at 200 to 400 m. Although the whales shifted their nighttime diving to somewhat shallower depths, about 75% of dives remained in the 200 to 400 m depth range. Analysis of squid nighttime diving behavior, based on archival time-series data, showed that excursions into warm surface waters were often terminated by deep dives to typical daytime depths, after which the squid appeared to be relatively quiescent. Diving behavior by whales is thus consistent with the idea that they feed on jumbo squid at depth during the day, and we suggest that deep nighttime foraging may target squid that are recovering from stress after recent surface activity and are therefore more susceptible to predation.


39.
- Artículo con arbitraje
*En hemeroteca, SIBE-San Cristóbal
Variabilidad en la estructura poblacional del calamar gigante (Dosidicus gigas) en Santa Rosalía, región central del Golfo de California
Bazzino, G. ; Salinas-Zavala, C. (coaut.) ; Markaida Aburto, Unai (coaut.) ;
Contenido en: Ciencias Marinas Vol. 33, no. 2 (junio 2007), p. 173-186 ISSN: 0185-3880
Bibliotecas: San Cristóbal
Cerrar
SIBE San Cristóbal
46279-10 (Disponible)
Disponibles para prestamo: 1
Nota: En hemeroteca, SIBE-San Cristóbal
PDF
Resumen en: Español | Inglés |
Resumen en español

Se describió la estructura poblacional del calamar gigante (Dosidicus gigas) en el área de Santa Rosalía (región central del Golfo de California) durante 2003 y 2004 y se analizó la variabilidad interanual en la estructura de tallas durante un periodo más amplio, de 1996–2004 (excepto 2000–2002). Los resultados evidenciaron claras diferencias en la madurez sexual y en la estructura de tallas, tanto de machos así como de hembras, entre 2003 y 2004. La población de calamar gigante observada en la temporada de pesca de 2003 reflejó altas proporciones de individuos maduros y de gran tamaño, mientras que la observada en 2004 estuvo compuesta mayoritariamente por individuos sexualmente inmaduros y de menor tamaño. Al expandir nuestro periodo de estudio se observó la existencia de una fuerte variabilidad interanual en la estructura de tallas del calamar gigante dentro del Golfo de California, lo cual también se vio reflejado en la talla de madurez. Los cambios en la estructura poblacional del calamar gigante parecen estar relacionados no sólo con la ocurrencia de eventos El Niño sino también con la intensidad o magnitud de los mismos. Por tal motivo se recomienda tener en cuenta esta variabilidad al momento de implementar cada año la estrategia de manejo a utilizar en la pesquería de calamar gigante del Golfo de California.

Resumen en inglés

This study describes the population structure of jumbo squid (Dosidicus gigas) in the area of Santa Rosalía (central Gulf of California) during the years 2003 and 2004, and analyzes the interannual variability in the size structure over a wider time period, 1996–2004 (except 2000–2002). The results revealed clear differences in the size structure and sexual maturity of males and females between 2003 and 2004. The jumbo squid population observed during the 2003 fishing season showed a high proportion of large and sexually mature individuals, whereas most specimens sampled during 2004 were smaller and immature. Expanding our time period, we observed a strong interannual variability in the size structure of jumbo squid within the Gulf of California, which was also reflected in the size at maturity. These changes in the population structure seem to be related to the occurrence and intensity of El Niño events. We recommend taking this variability into account at the beginning of each fishing season when the authorities establish the management strategy for the jumbo squid fishery in the Gulf of California.


40.
Tesis - Maestría
La dieta de bandera (Bagre marinus mitchill, 1815) proveniente de la pesca de la costa artesanal en la costa de Tabasco, México / Angel Romero Rodríguez
Romero Rodríguez, Ángel ; Mendoza Carranza, Manuel (tutor) ; Barba Macías, Everardo (asesor) ; Markaida Aburto, Unai (asesor) ;
Villahermosa, Tabasco, México : El Colegio de la Frontera Sur , 2006
Clasificación: TE/597.49097263 / R6
Cerrar
SIBE Campeche
ECO040002888 (Disponible)
Disponibles para prestamo: 1
Cerrar
SIBE Chetumal
ECO030006474 (Disponible)
Disponibles para prestamo: 1
Cerrar
SIBE San Cristóbal
ECO010009569 (Disponible)
Disponibles para prestamo: 1
Cerrar
SIBE Tapachula
ECO020010549 (Disponible)
Disponibles para prestamo: 1
Cerrar
SIBE Villahermosa
ECO050002999 (Disponible)
Disponibles para prestamo: 1
PDF
Resumen en: Español |
Resumen en español

El bagre bandera Bagre marinus es un pez con alta importancia económica y ecológica en los sistemas costeros de Tabasco, ya que es capturado en altos volúmenes en comparación a otras especies de escamas marinas de importancia comercial. Pese a esto, son escasos los estudios realizados acerca de esta especie. Este estudio pretende generar conocimientos sobre la ecología trófica de Bagre marinus en las costas de los municipios de Centla y Paraíso, Tabasco. Tomando en cuenta posibles diferencias geográficas y entre sexos de la dieta de B. marinus. Para ello se seleccionaron tres localidades de muestreos, dos en Centla y una en Paraíso. Estómagos de esta especie fueron colectados mensualmente durante 13 meses (enero 2004 a enero 2005). El tamaño de muestra mensual fue de 30 individuos por localidad obtenidas al azar de desembarcos comerciales, haciendo un total 1278 estómagos (1102 con contenido y 176 vacíos), de los cuales 494 fueron machos y 608 hembras. Las presas presentes en los contenidos estomacales fueron identificadas, clasificadas, numeradas y pesadas. Para el análisis cuantitativo del régimen alimenticio de B. marinus se calcularon los porcentajes en número, peso y frecuencia de ocurrencia y el índice de importancia relativa. Estos porcentajes fueron comparados a través del coeficiente de concordancia de Kendall, comprobándose que los tres índices proveían similar información, siendo usado la contribución numérica de las presas para los demás análisis. La dieta de esta especie estuvo constituida por dos grupos tróficos principales: crustáceos y peces en Frontera y San Pedro e inversamente en chiltepec (peces y crustáceos). El estadístico G mostró que no existen diferencias en la alimentación entre sexos para las tres localidades.

La similitud y el traslapo calculados con los índices de Morisita mostraron alta similitud entre localidades (Chiltepec-Frontera Cλ = 1.00 ± 0.025 DE, Chiltepec-San Pedro Cλ 0.972 ± 0.037 DE y Frontera-San Pedro Cλ = 0.961 ± 0.049 DE.).


41.
Artículo
Food and feeding of jumbo squid Dosidicus gigas in the Gulf of California and adjacent waters after the 1997–98 El Niño event
Markaida Aburto, Unai ;
Contenido en: Fisheries Research Vol. 79, no. 1-2 (2006), p. 16-27 ISSN: 0165-7836
Resumen en: Inglés |
Resumen en inglés

Stomach contents were analysed for 292 medium size (<45 cm mantle length) jumbo squid, Dosidicus gigas, caught in the Gulf of California and adjacent waters in 1998–2000. Diet varied by location and was dominated, in different places, by mesopelagic fishes as Benthosema panamense, Triphoturus mexicanus, and Vinciguerria lucetia. This general pattern of feeding on myctophids coincided with that for large size jumbo squid in 1995–1997. Pteropods, micronektonic squid, megalopae, and euphausiids were second in importance and some were consumed in larger amounts than in previous years. It is difficult to discern whether these differences in diet were due to a smaller squid size or to a change in the pelagic environment after the 1997–98 El Niño event.


42.
Capítulo de libro
*Solicítelo con su bibliotecario/a
Perspectives on dosidicus gigas in a changing world
Gilly, William F. (autor) ; Markaida Aburto, Unai (autor) ;
Disponible en línea
Contenido en: The role of squid in open ocean ecosystems / Robert J. Olson, Jock W. Young (Eds.) Honolulu, Hawaii, United States : Report of a GLOBEC-CLIOTOP/PFRP workshop, 2006 p. 81-90
Nota: Solicítelo con su bibliotecario/a

43.
Artículo
Population structure and reproductive biology of jumbo squid Dosidicus gigas from the Gulf of California
Markaida Aburto, Unai ;
Contenido en: Fisheries Research Vol. 79, no. 1-2 (June 2006), p. 28-37 ISSN: 0165-7836
Resumen en: Inglés |
Resumen en inglés

After 2 years of big catches (over 100 000 tonnes annually) of large (up to 85 cm ML) jumbo squid (Dosidicus gigas) during La Ni˜na years, the fishery vanished in the Gulf of California during 1998 following the 1997–1998 El Ni˜no. This event impacted jumbo squid abundance and population structure in the region. In 1999, abundant medium size maturing squid (<45 cm ML) were found in several locations in the Gulf of California, where 58 000 tonnes were fished. The environment during the transition phase to the 1998–2001 La Ni˜na conditions may have favoured the presence of a medium size, early maturing form of jumbo squid as opposed to the large size squid fished during previous La Ni˜na years. The return of large size maturing squid to the Gulf in 2000 may have occurred through a gradual increment of size at maturity. Additional information is reported on sex ratios, copulation rates, and gonadosomatic indexes based on 732 individuals of this medium size maturing jumbo squid from the Gulf of California and adjacent waters.


44.
Artículo
Stable isotopes in jumbo squid (Dosidicus gigas) beaks to estimate its trophic position: comparison between stomach contents and stable isotopes
Ruiz-Cooley, R. Iliana ; Markaida Aburto, Unai (coaut.) ; Gendron, D. (coaut.) ; Aguíñiga, Sergio (coaut.) ;
Contenido en: Journal of the Marine Biological Vol. 86. no. 2 (2006), p. 437-445 ISSN: 0025-3154
Resumen en: Inglés |
Resumen en inglés

Stomach contents and carbon (C) and nitrogen (N) stable isotope analysis were used to evaluate trophic relationships of jumbo squid, Dosidicus gigas. Buccal masses, beaks and stomach contents of large and medium maturing-sized jumbo squid and muscle from its main prey, the myctophid Benthosema panamense, were collected in the Gulf of California, Mexico during 1996, 1997 and 1999. Both the quanti¢ed C and Nisotope ratios in muscle, and stomach content analysis revealed that larger-sized maturing squid showed a higher trophic position than medium-sized individuals. However, a discrepancy between stomach contents versus stable isotope analyses was found in evaluating trophic relationships. Simple dilution models as a function of growth were used to estimate the C and N renewal dietary shift for jumbo squid. Estimates of the initial C and N pools in D. gigas with an initial age of 70 days and 210 days indicated isotopic shifts of 32% after a threefold biomass increase and 25% after a fourfold biomass increase, respectively. Additionally, beak samples of jumbo squid were evaluated as an alternative tissue to estimate squid trophic position using stable isotopes. The results showed a signi¢cant correlation between stable isotope ratios from muscle and beak samples. Muscle isotope values were higher than beak by 1%and 4% for d13C and d15N respectively. A test with jumbo squid beaks collected from a stomach of a stranded sperm whale con¢rmed the viability of this method.


45.
Capítulo de libro
*Solicítelo con su bibliotecario/a
Studies of the jumbo squid (Dosidicus gigas d´Orbigny, 1835) in Mexico: fishery, ecology and climate
Salinas Zavala, César Augusto (autor) ; Camarillo Coop, Susana (autora) ; Mejia Rebollo, Arminda (autora) ; Rosas Luis, Rigoberto (autor) ; Ramos Castillejos, Jorge (autor) ; Ramírez Rojo, R. (coaut.) ; Arizmendi Cárdenas, Diana (autora) ; Bazzino, Gastón (autor) ; Dimaté Velázquez, N. (coaut.) ; Markaida Aburto, Unai (autor) ;
Disponible en línea
Contenido en: The role of squid in open ocean ecosystems / Robert J. Olson, Jock W. Young (editores) Honolulu, Hawaii, United States : Report of a GLOBEC-CLIOTOP/PFRP Workshop, 2006 p. 35-41
Nota: Solicítelo con su bibliotecario/a

46.
Capítulo de libro
*Solicítelo con su bibliotecario/a
Trophic ecology of jumbo squid, Dosidicus gigas in the Gulf of California and adjacent waters
Markaida Aburto, Unai (autor) ; Rosas, Rigo (autor) ; Salinas Zavala, César Augusto (autor) ; Gilly, William F. (autor) ;
Disponible en línea
Contenido en: The role of squid in open ocean ecosystems / Robert J. Olson, Jock W. Young (Eds.) Honolulu, Hawaii, United States : Report of a GLOBEC-CLIOTOP/PFRP Workshop, 2006 p. 53-54
Nota: Solicítelo con su bibliotecario/a
PDF

47.
Capítulo de libro
*Solicítelo con su bibliotecario/a
Use of stable isotopes to examine foraging ecology of jumbo squid (Dosidicus gigas)
Ruiz Cooley, R. Iliana (autora) ; Markaida Aburto, Unai (autor) ;
Disponible en línea
Contenido en: The role of squid in open ocean ecosystems / Robert J. Olson, Jock W. Young (Eds.) Honolulu, Hawaii, United States : Report of a GLOBEC-CLIOTOP/PFRP Workshop, 2006 p. 62-63
Nota: Solicítelo con su bibliotecario/a

48.
Tesis - Maestría
Validación del cultivo semintensivo de caracol tote (Pomacea flagellata), en el trópico húmedo / Fernando Víctor Iriarte Rodríguez
Iriarte Rodríguez, Fernando Víctor ; Mendoza Carranza, Manuel (tutor) ; Markaida Aburto, Unai (asesor) ; Elías Gutiérrez, Manuel (asesor) ;
Villahermosa, Tabasco, México : El Colegio de la Frontera Sur , 2006
Clasificación: TE/639.483 / I7
Cerrar
SIBE Campeche
ECO040002736 (Disponible)
Disponibles para prestamo: 1
Cerrar
SIBE Chetumal
ECO030004214 (Disponible)
Disponibles para prestamo: 1
Cerrar
SIBE San Cristóbal
ECO010006560 (Disponible)
Disponibles para prestamo: 1
Cerrar
SIBE Tapachula
ECO020009729 (Disponible)
Disponibles para prestamo: 1
Cerrar
SIBE Villahermosa
ECO050002863 (Disponible)
Disponibles para prestamo: 1
PDF
Índice | Resumen en: Español |
Resumen en español

Se muestran los resultados de la validación del cultivo semi – intensivo de caracol Pomacea flagellata en tres sistemas de alimentación: alimento balanceado para tilapia (tratamiento A), alimento balanceado para pollo (tratamiento B) y hojas de chaya (Nidosculos chayamansa) (tratamiento C). El sistema de cultivo incluyó 30 unidades de cultivo (10 por tratamiento) de 200 L, colocadas al aire libre. La densidad de siembra fue de 1 organismo/L, realizando recambios diarios del 10 al 20% del volumen de agua. Se obtuvieron tallas comerciales de 4 cm. de altura columnelar en 11 semanas para el tratamiento A, 12 semanas para el tratamiento B y 16 para el tratamiento C; con incrementos diarios de biomasa de 0,095 ± 0,011 g para C, 0,173 ± 0,024 g para B y de 0,187 ± 0.027 g para A, y rendimientos promedio por unidad de cultivo de 541,96 ± 69,28 g para A, 519,15 ± 59,89 para B y de 401,58 ± 44,71 para C. El factor de conversión alimenticia (FCA) para A, fue 0,515 ± 0,07 mm/día, para B de 0,496 ± 0,06 mm/día y para C de 0,335 ± 0,04 mm/día. El análisis costo/beneficio de los tratamientos mostró ser viable para los tratamientos A y B en mayor medida que el tratamiento C, considerando los costos de infraestructura y de operación de los tres sistemas de alimentación, de acuerdo a los precios observados en cuatro mercados regionales. Los resultados indican que el cultivo semi-intensivo es factible en los tres sistemas ensayados.

Índice

Agradecimiento
Índice
Resumen
Introducción
Materiales y Métodos
Área de Estudio y Diseño experimental
Análisis de datos
Resultados y Discusión
Parámetros Fisicoquímicos
Crecimiento de los organismos
Análisis Costo-Beneficio
Conclusión
Literatura Citada


49.
Artículo
PDF PDF
Resumen en: Inglés |
Resumen en inglés

Dosidicus gigas is a large and powerful oceanic squid that is economically valuable and ecologically important in the eastern Pacific Ocean. We employed electronic tagging methods to provide the first long-term monitoring of the natural behaviors of D. gigas in its mesopelagic habitat. Seven pop-up satellite tags logged depth and temperature for a total of 842 h, and a conventional archival tag yielded 780 h of continuous time-series data. Horizontal movements of nearly 100 km over 3 d were observed, and these were temporally associated with an established trans- Gulf migration. Squid consistently spent most daylight hours at depths >250 m, the approximate upper boundary of a midwater hypoxic zone termed the oxygen minimum layer (OML).

A diel migration brought squid to near-surface waters at dusk, but a highly variable amount of diving back into the OML occurred throughout the night. Rhythmic vertical movements within the OML often occurred, and sojourns of up to 6 h in this hypoxic zone below 300 m were observed. Laboratory experiments revealed a high resting rate of oxygen consumption under normal conditions, but this rate decreased drastically under hypoxic conditions such as would be associated with the OML in nature. These findings suggest that D. gigas has physiological adaptations that permit constant foraging in both oxygenated near-surface waters and within the OML.


50.
- Artículo de divulgación
*En hemeroteca, SIBE-Campeche, SIBE-Chetumal, SIBE-San Cristóbal, SIBE-Tapachula, SIBE-Villahermosa
El calamar gigante del Golfo de California
Markaida Aburto, Unai ;
Contenido en: ECOfronteras No. 25 (agosto 2005), p. 21-24
Cerrar
SIBE Campeche
39772-40 (Disponible)
Disponibles para prestamo: 1
Cerrar
SIBE Chetumal
39772-20 (Disponible)
Disponibles para prestamo: 1
Cerrar
SIBE San Cristóbal
B8413 (Disponible)
Disponibles para prestamo: 1
Cerrar
SIBE Tapachula
39772-30 (Disponible)
Disponibles para prestamo: 1
Cerrar
SIBE Villahermosa
39772-50 (Disponible)
Disponibles para prestamo: 1
Nota: En hemeroteca, SIBE-Campeche, SIBE-Chetumal, SIBE-San Cristóbal, SIBE-Tapachula, SIBE-Villahermosa
PDF PDF