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      Aspectos tróficos y reproductivos de algunos batoideos capturados en Santa Marta, Mar Caribe de Colombia Translated title: Trophic and reproductive aspects of some batoids caught at Santa Marta in the Colombian Caribbean Sea

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          Abstract

          Se presentan los resultados de la condición reproductiva y espectro trófico de cuatro batoideos capturados incidentalmente en la pesca artesanal de dos sectores del mar Caribe colombiano, entre agosto 2005 y septiembre 2006. Se evaluó un total 570 lances en Playa Salguero y 149 en Don Jaca, efectuándose entre 12 y 26 días de muestreo mensuales. Se obtuvo abundancias totales y relativas de los batoideos capturados y se estableció la proporción sexual, así como la representatividad de cada estado de desarrollo gonadal. De Narcine bancroffti se evaluó 176 ejemplares (127 hembras y 49 machos); 167 Rhinobatos percellens (83 hembras y 84 machos); 237 Urotrygon venezuelae (126 hembras y 111 machos) y para Dasyatis guttata se evaluó 119 individuos (58 hembras y 61 machos). A pesar que los ejemplares capturados de las cuatro especies mostraron representatividad de todos los estadios de desarrollo gonadal, las etapas inmaduro (I) y maduro (III), fueron las mejor representadas. Adicionalmente, por la proporción sexual obtenida, parece no haber segregación espacio-temporal marcada. La dieta en general estuvo constituida por crustáceos, anélidos y teleósteos, evidenciando preferencias alimentarias únicas, lo cual les permite evitar competencia interespecífica entre batoideos.

          Translated abstract

          This paper presents the reproductive condition and feeding spectrum of four batoid species caught as bycatch by artisanal fishermen in two sectors of the Colombian Caribbean Sea between August 2005 and September 2006. Specimens were evaluated from a total of 570 hauls done off Salguero beach and 149 off Don Jaca, with sampling periods of 12 to 26 days per month. The total and relative abundance of the batoids caught were determined, as were the sexual proportion and representativity of each sexual maturity stage. Specimens sampled were: 176 Narcine bancroftii (127 females, 49 males); 167 Rhinobatos percellens (83 females, 84 males); 237 Urotrygon venezuelae (126 females, 111 males), and 119 Dasyatis guttata (58 females, 61 males). Although specimens from all stages of maturity were caught, the immature (I) and mature (III) stages were dominant. Based on the sexual proportion obtained, no marked spatial-temporal segregation was observed. The overall diet consisted of crustaceans, annelids, and teleosts, with unique food preferences that allow the sampled species to avoid interspecific competition.

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                Author and article information

                Journal
                lajar
                Latin american journal of aquatic research
                Lat. Am. J. Aquat. Res.
                Pontificia Universidad Católica de Valparaíso. Facultad de Recursos Naturales. Escuela de Ciencias del Mar (Valparaíso, , Chile )
                0718-560X
                July 2012
                : 40
                : 2
                : 300-315
                Affiliations
                [01] Santa Marta orgnameUniversidad Jorge Tadeo Lozano orgdiv1Facultad de Ciencias Naturales e Ingeniería orgdiv2Programa de Biología Marina Colombia
                [02] orgnameUniversidad Nacional Autónoma de México orgdiv1Posgrado en Ciencias del Mar y Limnología México
                Article
                S0718-560X2012000200006 S0718-560X(12)04000206
                ea1106ed-f025-4d4e-b468-0705bfaf59d5

                This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

                History
                : 10 February 2011
                : 03 May 2012
                Page count
                Figures: 0, Tables: 0, Equations: 0, References: 54, Pages: 16
                Product

                SciELO Chile


                hábitos tróficos,artisanal fishery,reproductive biology,feeding habits,Batoidea,Caribbean Sea,Colombia,pesca artesanal,biología reproductiva,Batoideos,mar Caribe

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