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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
PDF
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
Cerrar
SIBE Campeche
ECO040006687 (Disponible) , ECO040006686 (Disponible)
Disponibles para prestamo: 2
Cerrar
SIBE Chetumal
ECO030008665 (Disponible)
Disponibles para prestamo: 1
Cerrar
SIBE San Cristóbal
ECO010019201 (Disponible) , ECO010019040 (Disponible)
Disponibles para prestamo: 2
Cerrar
SIBE Villahermosa
ECO050006280 (Disponible)
Disponibles para prestamo: 1
PDF
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
Clasificación: TE/333.956097264 / G3
Cerrar
SIBE Campeche
56318-60 (Disponible) , ECO040006189 (Disponible)
Disponibles para prestamo: 2
Cerrar
SIBE Chetumal
ECO030008450 (Disponible)
Disponibles para prestamo: 1
Cerrar
SIBE San Cristóbal
ECO010005980 (Disponible)
Disponibles para prestamo: 1
Cerrar
SIBE Tapachula
ECO020013425 (Disponible)
Disponibles para prestamo: 1
Cerrar
SIBE Villahermosa
ECO050006003 (Disponible)
Disponibles para prestamo: 1
PDF
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.


PDF PDF
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.


PDF
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
Cerrar
SIBE Campeche
ECO040005087 (Disponible)
Disponibles para prestamo: 1
Cerrar
SIBE Chetumal
ECO030007818 (Disponible)
Disponibles para prestamo: 1
Cerrar
SIBE San Cristóbal
ECO010017231 (Disponible)
Disponibles para prestamo: 1
Cerrar
SIBE Tapachula
ECO020012918 (Disponible)
Disponibles para prestamo: 1
Cerrar
SIBE Villahermosa
ECO050005297 (Disponible)
Disponibles para prestamo: 1
PDF
Índice | Resumen en: Español |
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