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      Captura de peces no comerciales con espinel experimental de fondo en Isla Gorgona, Colombia, y su área de influencia Translated title: Non-commercial fish catches with experimental bottom long line fishing in Gorgona Island, Colombia, and its surroundings areas

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          Abstract

          Durante los años 2005 a 2009 se realizaron faenas experimentales de pesca en el Parque Nacional Natural Gorgona y su área de influencia, con un espinel compuesto por anzuelos tradicionales J y circulares o curvos. Este estudio analiza la composición de las capturas comparando los dos anzuelos y enfatiza en si el anzuelo circular modifica o no las capturas no comerciales (descarte). En total se analizaron 189 lances de pesca estandarizándose la captura por unidad de esfuerzo (CPUE) en número de individuos y en kilogramos por 100 anzuelos por hora de faena. Se capturaron en total 50 especies, de las cuales 14 hacen parte de la categoría no comercial o de descarte. No se detectaron diferencias significativas en la CPUE de estas especies considerando el tipo de anzuelo (U=25228, p>0.1) siendo Gymnothorax equatorialis y Echiophis brunneus las especies más abundantes Al evaluar el patrón espacial de variación de la CPUE para estas especies, se encontró que ambas se concentran en el sector norte del área de estudio, asociada a la zona de bancos rocosos. Finalmente, se estableció la talla media de madurez sexual para G. equatorialis en 57.0cm y de E. brunneus en 85.6cm.

          Translated abstract

          Eels and moray eels are among the species that lack commercial value but that are important as bait. However, little information is available about Colombian fishing by-products. Between 2005 and 2009, field work was done in Gorgona National Natural Park and its surrounding areas, with a fishing line made of traditional “J” and circular or curve hooks. We analyzed the catch composition, comparing both types of hooks, emphasizing whether the circular hook modified or not non-commercial captures. Overall, 189 fishing throws where analyzed, standardizing the Catch Per Effort (CPUE) in number of individuals and in kilograms per 100 hooks per hour of task. A total of 50 species where captured, of which 14 are part of the non-commercial category. There were no significant differences for hook types (U=25228, P>0.1), and Gymnothorax equatorialis and Echiophis brunneus were the most abundant species. Both were concentrated in the northern sector of the study area, a rocky banks sector. The mean sexual maturity size was 57.0cm in G. equatorialis, and at 85.6cm in E. brunneus. Rev. Biol. Trop. 62 (Suppl. 1): 391-405. Epub 2014 February 01.

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          Manual de métodos para estudos biológicos de população de peixes: Reprodução e crescimento

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            Statistical method of estimating the size at first maturity in fishes

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              Length-Weight relationships of soft-bottom demersal fishes from Jalisco and Colima states, Mexico

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                Author and article information

                Contributors
                Role: ND
                Role: ND
                Role: ND
                Journal
                rbt
                Revista de Biología Tropical
                Rev. biol. trop
                Universidad de Costa Rica (San José )
                0034-7744
                February 2014
                : 62
                : suppl 1
                : 391-405
                Article
                S0034-77442014000500029
                6a867527-8f5e-42d4-995e-63d6d22797a7

                http://creativecommons.org/licenses/by/4.0/

                History
                Product

                SciELO Costa Rica

                Self URI (journal page): http://www.scielo.sa.cr/scielo.php?script=sci_serial&pid=0034-7744&lng=en
                Categories
                Biodiversity Conservation
                Biology

                General life sciences,Animal science & Zoology
                bottom line fishing,hooks,protected areas,anguiliformes,Gymnothorax equatorialis,Echiophis brunneus,Colombian Pacific Ocean,pesca de fondo,anzuelos,áreas protegidas,Pacífico colombiano

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