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17 resultados encontrados para: AUTOR: Ocaña Borrego, Frank Alberto
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1.
- Artículo sin arbitraje
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Resumen en: Español | Inglés |
Resumen en español

Este trabajo presenta un análisis de la percepción ambiental enfocado a Eustrombus gigas como especie bandera en una comunidad costera en Cuba: Cabo Cruz. Esta comunidad se localiza dentro del Parque Nacional Desembarco del Granma y depende básicamente de los recursos pesqueros. Se realizan entrevistas para evaluar el conocimiento de los problemas ambientales, lo que se confirma a posteriori en un reconocimiento por medio de la aplicación de matrices de interacción uso-uso y uso-recurso. Cinco grupos de problemas ambientales fueron identificados. Los problemas más importantes están relacionados con la contaminación del sector costero y la falta de participación local en las decisiones pertinentes a la protección del ecosistema. Sin embargo, la mayor problemática identificada para la gestión de E. gigas están relacionados con el bajo nivel ambiental y legislativo, la disponibilidad de recursos y los problemas de calidad del agua y la contaminación por hidrocarburos.

Resumen en inglés

This paper presents an analysis of the environmental perception in a coastal community in Cuba: Cabo Cruz; focused to Eustrombus gigas as flagship specie. This community is located within Desembarco del Granma National Park and depends of fishery resources basically. Several interviews were conducted to assess the knowledge of environmental problems, which was confirmed in a subsequent recognition by the application of use-use interaction matrix and use-resource interaction matrix. Five groups of environmental problems were identified. The most important problems were related to the coastal pollution and low participation of local people in the relevant decisions for ecosystem management. However, the greatest problems identified for E. gigas management were related to the low level of awareness of legislative environmental agreements, resources availability, water quality problems and oil pollution.


2.
- Artículo con arbitraje
PDF
Resumen en: Español | Inglés |
Resumen en español

Eustrombus gigas es uno de los recursos pesqueros costeros más valiosos en la región del Caribe y constituye un molusco con un elevado valor estético y ecológico. En esta investigación se evalúa su densidad total, densidad de adultos, la estructura de tallas y frecuencia de evidencias reproductivas en Banco Chinchorro, México, periodo 2009-2010; durante tres períodos (de lluvias, seca y de frentes fríos) en tres zonas: Norte, Centro y Sur. La densidad total para el área de estudio varió de 127ind./ha en lluvias a 384ind./ha en seca, la menor densidad se presentó en la zona Norte del Banco (198ind./ha) y la mayor en la zona Sur (385ind./ha). La densidad de caracoles adultos fue baja (6.11ind./ha en seca y 8.33ind./ha en lluvias y 5.55, 7.05 y 8.33ind./ha para las zonas Centro, Sur y Norte, respectivamente). Las densidades de adultos estuvieron por debajo del umbral mínimo necesario para mantener la reproducción. El 42% de la población es vulnerable a la pesca (Lsi≥200mm); sin embargo, solo 2.2% de la población alcanza un Gl>15mm. Solo se observaron seis evidencias de reproducción durante el período de estudio, lo que señala la presencia del efecto Allee en la población y la urgente necesidad del cierre de su pesquería. Se proponen tres puntos importantes para el manejo de la especie: cierre de la pesca, monitoreo de la población y la implementación refugios pesqueros.

Resumen en inglés

The pink conch Eustrombus gigas is an important fisheries resource. At the regional level in the Caribbean, over-exploitation and habitat destruction have caused a decrease in the abundance of this resource. In order to provide necessary information for the species management in Mexico, this work aimed to analyze the total density, adult density, size structure and reproductive behavior of pink conch population at Banco Chinchorro during 2009-2010. Data from three seasons were obtained (rainy, dry and cold fronts periods) in three areas: Norte (North), Centro (Center) and Sur (South). The organisms were separated into two groups: (a) the criteria based upon legal harvest in Mexico: legal size conchs (siphonal length≥200mm) and illegal size conchs (siphonal length<200mm), and (b) the criteria based upon sexual maturity using the 15mm lip thickness standard: lip<15mm as juvenile conch and lip≥15mm as adult conch. Copulation, spawning, egg masses and aggregations were evaluated as reproductive evidences. The highest total density was observed during the dry season with 384ind./ha, and the lowest during the rainy season with 127ind./ha. The highest density was reported at Sur (385ind./ha) and the lowest at Norte (198ind./ ha). The highest adult density was observed during the rainy season (8.33ind./ha), and the lowest occurred in the dry season (6.11ind./ha).

Adult density values were 5.55, 7.05 and 8.33ind./ha for Centro, Sur and Norte areas, respectively. Adult densities were lower than the threshold needed for reproduction, and 42% of the population may be vulnerable to fishing, as they had the minimum size for catch (Lsi 200mm). Furthermore, only 2.2% of the population reached a Gl>15mm as sexual maturity indicator. During the study period, only six evidences of reproductive activity were observed. The smaller densities reported at Banco Chinchorro may cause reproduction events to be almost absent which in turn is sufficient evidence to show that the Allee Effect is acting on the queen conch population and there is an urgent need of fishery closure. Three important points were proposed for management of queen conch at Banco Chinchorro: total closure of fishing, systematic assessment of the conch population and the implementation of conch fishing refuge.


3.
- Artículo con arbitraje
*En hemeroteca, SIBE-San Cristóbal, SIBE-Chetumal
Density and reproduction of the queen conch Eustrombus gigas (Mesogastropoda: Strombidae) at Cabo Cruz, Desembarco del Granma National Park, Cuba
Cala de la Hera, Yuself Roberto ; De Jesús Navarrete, Alberto (coaut.) ; Ocaña Borrego, Frank Alberto (coaut.) ; Oliva Rivera, José Juan (coaut.) ;
Contenido en: Revista de Biología Tropical Vol. 61, no. 2 (June 2013), p. 645-655 ISSN: 0034-7744
Bibliotecas: Chetumal , San Cristóbal
Cerrar
SIBE Chetumal
35616-20 (Disponible)
Disponibles para prestamo: 1
Cerrar
SIBE San Cristóbal
35616-10 (Disponible)
Disponibles para prestamo: 1
Nota: En hemeroteca, SIBE-San Cristóbal, SIBE-Chetumal
PDF
Resumen en: Español | Inglés |
Resumen en español

El Eustrombus gigas es un recurso pesquero importante en la región del Caribe. En Cuba, los estudios acerca de este recurso son muy escasos y en la zona Sur-oriental del país son casi nulos. En este trabajo se evalúa la densidad de adultos y frecuencia de la evidencia reproductiva de Eustrombus gigas Linneus 1758 en Cabo Cruz, Cuba, en el periodo 2009-2010. Se obtuvieron datos de tres períodos (lluvias, seca y frentes fríos) en tres zonas: Farito, Guafe y Laguna. La mayor densidad de adultos se observó en frentes fríos (468.5ind./ha) y la menor en seca (268.5ind./ ha). Por zonas, la mayor densidad de adultos se reportó en Laguna (520.4ind./ha) y la menor en Farito (290.9ind./ha). Se observaron 158 evidencias reproductivas. La mayor frecuencia se reportó en lluvias (36%). La temperatura se relacionó con la frecuencia de desove y cantidad de masas de huevos, y el fotoperiodo con la cantidad de agregaciones y frecuencia de cópula. Se observó actividad reproductiva intensa durante todo el año, lo que sugiere una importante reserva de la especie en la región sur-oriental de Cuba y una aparente autosuficiencia de la población para el reclutamiento. La explotación sostenible de la población es viable y Laguna debe ser protegida como zona de reproducción.

Resumen en inglés

The queen conch Eustrombus gigas is an important fisheries resource in the Caribbean region. In Cuba Island the studies about this resource are very scarce and particularly in the Southeastern regions of the country. With the aim to get important fishery information about this gastropod, adult Queen Conch density and frequency of reproductive activity were evaluated in Cabo Cruz, Cuba, during 2009-2010. Data from three seasons were obtained (rainy, dry and cold fronts periods) from three different areas: Farito, Guafe and Laguna. The highest density was observed in cold fronts season (468.5ind./ha) and the lowest occurred during the dry season (268.5ind./ha). The highest density was reported at Laguna (520.4ind./ha) and the lowest at Farito (290.9ind./ha). In total, 158 reproductive events were observed. The highest frequency was reported in rainy season (36%), followed by dry (9%) and cold fronts (5%) seasons. Reproductive behavior (mating and egg laying) was related to temperature and photoperiod. Reproductive activity was observed during the whole year, which suggests the existence of an important Queen Conch reserve in the Southeastern region of Cuba and an apparently self-sufficient population for recruitment. From our results we may conclude that, the population’s sustainable exploitation is viable if the following management measures are observed: functional zoning within the area, rotation of fishing areas and a closed season. We recommend that the Laguna site should be protected as a reproduction zone and banned for fishing activities.


4.
- Artículo con arbitraje
*Solicítelo con su bibliotecario/a
Abundance, distribution, and secondary production of the apple snail Pomacea flagellate (Say, 1829) in Bacalar Lake, a tropical karstic system in southern Mexico
De Jesús Navarrete, Alberto (autor) ; Ocaña Borrego, Frank Alberto (autor) ; Oliva Rivera, José Juan (autor) ; Jesús Carrillo, Rosa M. de (autor) ; Vargas Espósitos, Abel Abraham (autor) ;
Contenido en: Studies on Neotropical Fauna and Environment Vol. 54, no. 1 (2019), p. 1–9 ISSN: 1744-5140
Nota: Solicítelo con su bibliotecario/a
Resumen en: Inglés |
Resumen en inglés

Pomacea flagellata is a gastropod conspicuous in freshwater environments, and represents a fishing resource. To assess their abundance, distribution, and secondary production, monthly samplings were carried out in Bacalar Lake from June 2012 to May 2013 at 12 sampling sites. In each site, three random transects were marked parallel to the shore. All snails on transect were collected and shell length and wet weight measured. The highest density occurred in September (1.27 ind.m−²), lowest in October (0.47 ind.m−²). Shell lengths ranged from 2 to 56 mm, with recruitment in January–March. Growth parameters were L∞ 59.50 mm, K 0.65.year−¹; the lifetime span was 3 years. Average biomass reached 5.57 wet g.m−² and secondary production was 6.025 wet g.m−². year-¹ ; annual renewal rate P/B 1.08. Highest abundance and secondary production was contributed by individuals between 31 and 41 mm in length. A potential biomass of 25.06 tons of snails was estimated in the lake. Snail densities, secondary production, and turnover were very low during the year, indicating that it is not viable to consider a commercial catch without affecting the population. A ban of 10 years is proposed, and aquaculture practices of snails are recommended to recover the resource.


5.
- Libro sin arbitraje
Manual básico para la producción en cautiverio de la chivita Pomacea flagellata / Alberto de Jesús Navarrete, Rosa María de Jesús Carrillo, Frank Alberto Ocaña Borrego
De Jesús Navarrete, Alberto (autor) ; De Jesús Carrillo, Rosa María (autora) ; Ocaña Borrego, Frank Alberto (autor) ;
Chetumal, Quintana Roo, México : El Colegio de la Frontera Sur , 2015
Disponible en línea
Clasificación: EE/639.483097267 / D4
Cerrar
SIBE Campeche
ECO040006280 (Disponible)
Disponibles para prestamo: 1
Cerrar
SIBE Chetumal
ECO030008448 (Disponible)
Disponibles para prestamo: 1
Cerrar
SIBE San Cristóbal
ECO010007215 (Disponible)
Disponibles para prestamo: 1
Cerrar
SIBE Tapachula
ECO020013451 (Disponible)
Disponibles para prestamo: 1
Cerrar
SIBE Villahermosa
ECO050006056 (Disponible)
Disponibles para prestamo: 1
Resumen en español

Se realizó un cultivo estático con el caracol de agua dulce Pomacea flagellata. El cultivo consideró la eclosión de huevas colectadas en el medio silvestre así como el manejo de reproductores, Los caracoles fueron alimentados con tres dietas diferentes y mostraron un crecimiento acelerado, alcanzando la talla comercial (36 mm) en seis meses. Se logró el manejo de reproductores, y se tuvo una producción de crías de tres generaciones. El manual describe las principales fases del cultivo.

Índice

Introducción
Acuacultura de Pomaceos en México
Capítulo 1
Biología y ecología de Pomacea flagellata
Capítulo 2
Aspectos reproductivos
Desove
Capítulo 3
Infraestuctura
Área experimental
Capítulo 4
Siembra y crecimiento en cautiverio
Inducción a la cópula y obtención de crías
Crecimiento y dietas
Capítulo 5
Parámetros y biometrías dentro del cultivo
Temperatura
Oxígeno
pH
Capítulo 6
Recomendaciones de cultivo
Alternativas de cultivo para caracoles Pomacea
Índice de figuras y cuadros
Referencias


6.
Artículo
Testing marine regional-scale hypotheses along the Yucatan continental shelf using soft-bottom macrofauna
Hernández Avila, Iván (autor) ; Ocaña Borrego, Frank Alberto (autor) ; Pech Pool, Daniel Guadalupe (autor) ;
Contenido en: PeerJ No. 8:e8227 (2020), p. 1-28 ISSN: 2167-8359
PDF
Resumen en: Inglés |
Resumen en inglés

Different hypotheses related to the regional-scale configuration of the Yucatan Continental Shelf (YCS) between the Gulf of Mexico (GoM) and the Caribbean Sea have been proposed. Hypotheses regarding its regional boundaries include: (i) an ecoregional boundary at Catoche Cape, dividing the Western Caribbean and the Southern GoMecoregions; and (ii) a boundary within the Southern GoM ecoregion at 89ºW, separating the West and Mid-Yucatan areas. We tested the hypothesis of no variation in benthic macrofaunal assemblages between regions delimited by the former boundaries using the species and functional traits of soft-bottom macrofauna. We considered that the depth and temporal environmental dynamics might interact with regional variations, generating complex benthic community patterns. The data were collected over fiveyears (2010–2012, 2015–2016) at 86 stations (N=1,017 samples, 10–270 m depth), comprising 1,327 species with 45 combinations of functional traits. The variation inspecies composition and functional trait assemblages were both consistent with the occurrence of three separate regions in the Yucatan Peninsula (West Yucatan, Mid-Yucatan and Western Caribbean). This regional configuration was consistent with changes in assemblage structure and depth zonation as well as temporal variation. Along with spatial and temporal variation, diversity diminished with depth and different regions exhibited contrasting patterns in this regard. Our results suggest that the spatialand temporal variation of soft-bottom macrofauna at YCS demonstrate the complex organization of a carbonate shelf encompassing different regions, which may represent transitional regions between the Caribbean and the GoM.


7.
- Artículo con arbitraje
PDF PDF
Resumen en: Inglés |
Resumen en inglés

Diversity patterns of the deep-sea megafauna in the Caribbean Basin and the Guiana ecoregion were analyzed in order to test the hypothesis of species richness variation as a function of depth and the hypothesis of non-differences between ecoregions by analyzing spatial patterns of five taxa and a merged assemblage. Collections of five taxa (corals, sea stars, sea urchins, sea lilies and gastropods) were obtained from seven oceanographic expeditions aboard the R/V Pillsbury at 310 stations between 60 and 7500 m depth. Data were sorted according to depth zones and ecoregions and were analyzed in order to estimate species richness, changes in species composition and distinction of β-diversity by species turnover or by nestedness. The observed patterns of diversity were consistent between taxa and their assemblage: Species richness increased from the continental shelf (60±200 m deep) to the slope (200±2000 m deep), followed by a decrease at the continental rise-abyssal zone. We detected marked changes in species composition according to depth ranges. Changes in species composition in relation to ecoregions were also detected. In general, the Caribbean Basin lacks important physical barriers, causing high deep-sea ecosystem connectivity; however, variation in composition could be related to changes in environmental conditions associated with productivity and/or continental influences.


8.
Artículo
*Solicítelo con su bibliotecario/a
Co-occurring factors affecting ghost crab density at four sandy beaches in the Mexican Caribbean
Ocaña Borrego, Frank Alberto (autor) ; De Jesús Navarrete, Alberto (autor) ; Hernández Arana, Héctor Abuid (autor) ;
Disponible en línea
Contenido en: Regional Studies in Marine Science Volume 36, artículo número 101310 (April 2020), p. 1-4 ISSN: 2352-4855
Nota: Solicítelo con su bibliotecario/a
PDF
Resumen en: Inglés |
Resumen en inglés

Human pressure can cause a decrease in the abundance of beach macrofauna, especially supralittoral crustaceans. In studying the life history traits of supralittoral crustaceans, human impact and beach features (e.g. beach slope, grain size, swash width) are often considered separately. Ghost crabs are widely accepted as ecological indicators of beach quality and condition since their abundance decreases at disturbed beaches; moreover, ghost crabs can respond to natural drivers. This study aims to determine factors affecting the density of the ghost crab Ocypode quadrata in the Mexican Caribbean. We studied the spatiotemporal variation of the density of ghost crabs at two urbanized and two reference beaches by counting crab burrows on all beaches during six sampling periods. Our results indicate that physical features of the beach are significantly correlated with burrow density, and burrow density varies substantially between urbanized and reference beaches. The greater variation of burrow density accounted for beach disturbance, followed by beach morphodynamic features. Basedon these results, our study confirms that the ghost crab is a relevant biological indicator species andis useful for guiding beach management criteria in the Mexican Caribbean. Our findings demonstrate that temporal replications must be included when using ghost crabs as ecological indicators.


9.
Artículo
*Solicítelo con su bibliotecario/a
Macrofaunal assemblages from two low-energy sandy beaches within contrasting salinity environments in Northeastern Cuba
Ocaña Borrego, Frank Alberto (autor) ; Mouso Batista, Martha M. (autora) ; Hernández Ávila, Iván (autor) ;
Disponible en línea
Contenido en: Regional Studies in Marine Science Volumen 40, número 101484 (2020), páginas 1-8 ISSN: 2352-4855
Nota: Solicítelo con su bibliotecario/a
Resumen en: Inglés |
Resumen en inglés

Low energy sheltered beaches occur in a wide range of coastal environments. Invertebrate macrofaunal assemblages for this beach type have been less studied compared with those at exposed sandy beaches. An estuarine and a reef-fringed beach in northeastern Cuba were sampled to assess the effects of freshwater input on the intertidal assemblages, and to describe the spatial zonation at both beach types. A total of 13 species were recorded; species richness between beaches was similar with ten species at the estuarine beach and nine species at the reef-fringed beach. Salinity and swash width differed significantly between the two beaches. Macrofaunal assemblages also differed between beaches, and the differences persisted overtime. Moreover, salinity and swash width resulted in relevant predictors for differences in macrofaunal composition. Species were clustered in twomain cross-shore zones corresponding with the resurgence and the retention zones. These findings contribute to the understanding of factors affecting macrofaunal communities in sandy beaches that have been under-represented in global studies. In addition, this study contributes to the knowledge of the structure and composition of macrofaunal assemblages in the less well studied beaches of Cuba.


10.
Artículo
*Solicítelo con su bibliotecario/a
Spatial assessment of the vulnerability of benthic communities to multiple stressors in the Yucatan Continental Shelf, Gulf of Mexico
Ocaña Borrego, Frank Alberto (autor) ; Pech Pool, Daniel Guadalupe (autor) ; Simões, Nuno (autor) ; Hernández Avila, Iván (autor) ;
Contenido en: Ocean and Coastal Management Vol. 181, article number 104900 (November 2019), p. 1-9 ISSN: 0964-5691
Nota: Solicítelo con su bibliotecario/a
Resumen en: Inglés |
Resumen en inglés

Here, we show a spatially explicit assessment of the vulnerability of benthic communities from the Yucatan Continental Shelf (YCS) to multiple pressures: fishing activities, shipping traffic, storms and hurricanes, and marine acidification. The vulnerability index was obtained by combining benthic biological traits with exposure and sensitivity and recovery capacity; this was then represented in a spatially explicit model. Moreover, we estimated a cumulative vulnerability index using three different scenarios that were based on 1) equal weight for each vulnerability layer to each stressor, 2) results of expert consultation and 3) a linear reduction in the weight of the pressures. By comparing scenarios, the synergistic and antagonistic effects of the multiple stressors were determined. The main results showed that, independent of the considered scenario, approximately 90% of the YCS presented moderate to high vulnerability to cumulative pressures, while areas with high recovery and high potential impact on a particular stressor showed low or moderate vulnerability to the pressures. Meanwhile, areas classified as having medium impact levels and low recovery capacities of benthic fauna showed moderateto high vulnerability to the same threats. Our findings also showed that ship traffic and marine acidification were the threats that contributed to the greatest vulnerability. The paired comparison of scenarios allows for the identification of areas with higher probabilities of synergistic effects. No antagonistic effects were detected. Overall, our results constitute the first effort to understand the ecological status of the benthic communities of the YCS and their potential vulnerability to the multiple pressures they face.