Variabilidad circadiana de la tasa de captura y la estructura de tallas en camarones e ictiofauna acompañante en la pesquería de arrastre del Mar Caribe de Colombia

Duarte, Luis Orlando; Gómez-Canchong, Paúl; Manjarrés, Luis; García, Camilo; Escobar, Fabián D; Altamar, Jairo; Viaña, Jorge Enrique; Tejada, Kenys; Sánchez, Javier; Cuello, Félix

doi:10.4067/s0717-71782006000100003

Cited by 9 publications

(10 citation statements)

References 31 publications

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“…The fact that this species, the most important in the 2006-2007 survey (see table 14 from García 2010), has become a secondary item in the database, reinforces the inference of decadent stocks in this species (Table 3). Duarte et al (2018) In accordance with its global predominance, gillnets landings disaggregated by department showed the same pattern of dominance (Table 4). Excep-tions are Choco, Cordoba and Magdalena, where handlines and beach seines are responsible for most landings (Table 4).…”

Section: Trophic Level Vulnerabilitymentioning

confidence: 58%

A diagnosis of the artisanal fishery landings in the Colombian Caribbean coast by means of indicators

García,

Duarte

2023

Mar Fish Sci

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Landings of the artisanal fishery in the Colombian Caribbean from 2013 to 2021 were characterized by means of two indicators: the trophic level and the vulnerability to fishery landings. Indicators showed a statistically significant decreasing trend in vulnerability and trophic level, suggesting that the fishery is increasingly targeting species of low vulnerability and trophic level, thus moving down the food web. The overall pattern of indicators was not uniform in space. Incidence interaction of gears and species landed explained the trajectory of indicators at the scale of Departments. Fishing gears targeted different levels in the food web, with gillnets responsible for the bulk of landings. Compared to a previous study, the group of fish species supporting most of landings has changed towards species with lower vulnerability, i.e. resistant to fishing mortality due to their evolved life-history but still of predatory habits in general. A notable exception is Mugil incilis, a species with a low trophic level that has become third in importance of landings in the database.

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Section: Trophic Level Vulnerabilitymentioning

confidence: 58%

A diagnosis of the artisanal fishery landings in the Colombian Caribbean coast by means of indicators

García,

Duarte

2023

Mar Fish Sci

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“…The high abundance of Cathorops mapale in both areas, also reported by other authors (e.g. Duarte et al 2006), can be explained by the fact that it inhabits marine-brackish and freshwater environments in tropical and subtropical waters along the world's continental shelves, on muddy or sandy bottoms in the lower parts of rivers, estuaries and coastal lagoons of mangroves (Herazo et al 2006;Betancur-R. et al 2007). In the areas studied there are favourable conditions for growth of this species, especially in the Gulf area, due to salinity decreases in the mouths of large rivers in the area (Ruiz-Ochoa et al 2012).…”

Section: Discussionmentioning

confidence: 78%

Measuring the spatial and seasonal variability of community structure and diversity of fish by-catch from tropical shrimp trawling in the Colombian Caribbean Sea

Escobar-Toledo¹,

Rejón

Duarte

2014

Marine Biology Research

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The highest rates of incidental catch of non-target species is associated with shrimp bottom trawl fisheries. This could lead to adverse effects on the structure and functioning of ecosystems. However, the structural and functional variability of fish communities captured as by-catch from this fishery in the Colombian Caribbean Sea have been poorly documented. We examined commercial fishing hauls in two areas (Gulf of Morrosquillo and adjacent coralline islands) during the rainy and dry seasons. The biomass and numeric abundance of fish species were estimated using by-catch data collected using the swept area method, and the demersal fish community structure was characterized using ecological, taxonomic and functional diversity indices. During the two seasons, 161 taxa were recorded, and 92 of them were present throughout the whole area. Ecological indices showed significant differences among areas and seasons, with lower values in the Islands area and during the wet season. However, the taxonomic diversity and functional indices do not show clear differences but instead indicate that the Islands area was the zone with a lower taxonomic and functional variation, which indicates lower ecological redundancy in comparison to the Gulf.

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“…Se esperaría entonces que la región de La Guajira, caracterizada por presentar las praderas de pastos y macroalgas más extensas del país (Díaz-Pulido 2000, Gómez-López 2009, Nieto-Bernal et al 2011, albergara una importante población de caracol pala, lo que es contrario a lo hallado en este estudio. Sin embargo, durante aproximadamente dos décadas, los hábitats someros de la plataforma continental de la Guajira junto con su fauna fueron objeto de una gran presión destructiva a causa de los arrastres camaroneros (Viaña et al 2002, Duarte et al 2006, Flórez-Leiva et al 2007. Esto podría estar asociado con la baja abundancia de S. gigas.…”

Section: Discussionunclassified

Composición, abundancia y distribución de las poblaciones de gasterópodos de importancia comercial en La Guajira, Caribe colombiano

Bernal

Chasqui

Rodríguez

et al. 2013

RBT

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Composition, abundance and distribution of populations of commercially important gastropods in La Guajira, Colombian Caribbean. In the continental Colombian Caribbean the conch resource exploitation and the status of snails populations has been poorly studied, which are reflected in the lack of fisheries management. This study assesses composition, population density and distribution of the gastropods species that make conch resource in La Guajira region. Underwater visual censuses for snails were performed between September-November 2009 in 145 100x4m (400m 2) transects, spanning a total area of 56 920m 2 between Riohacha and Cabo de la Vela. The study was complemented with the evaluation of composition, abundance and size of gastropods conch found in the discarded-by-fishermen shell mounds in 13 beaches. In October 2010 another 40 transects were evaluated (16 000m 2) from the Southern of Riohacha to the Camarones village (La Guajira). We found a total of 9 911 snails belonging to 12 species, the most abundant being Strombus pugilis with 8 912 individuals and an average density of 1 538.4±3 662.6 ind./ha , followed by Vasum muricatum with 374 individuals and an average density of 51.8±91.2 ind./ha. Calculating the importance value index (IVI) for both living organisms as the empty shells on beaches, shows that Turbinella angulata is the most used species by artisanal fishermen in the region. Cassis madagascariensis and Cassis tuberosa are also important snail resources in the region (as suggested by the number of empty shells found in beaches), but its densities were low. Strombus gigas, with only three living organisms found in the area, presented the lowest abundance ever found in the Colombian Caribbean (0.52±3.6 ind./ha), showing that queen conch population in La Guajira cannot support commercial exploitation. The abundance of discarded S. gigas shells on beaches suggests resource exploitation in the recent past. Results remarks the urgency of implementing management plans for snail fisheries in the region.

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Variabilidad circadiana de la tasa de captura y la estructura de tallas en camarones e ictiofauna acompañante en la pesquería de arrastre del Mar Caribe de Colombia

Cited by 9 publications

References 31 publications

A diagnosis of the artisanal fishery landings in the Colombian Caribbean coast by means of indicators

A diagnosis of the artisanal fishery landings in the Colombian Caribbean coast by means of indicators

Measuring the spatial and seasonal variability of community structure and diversity of fish by-catch from tropical shrimp trawling in the Colombian Caribbean Sea

Composición, abundancia y distribución de las poblaciones de gasterópodos de importancia comercial en La Guajira, Caribe colombiano

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