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      EFECTO DE TILAPIA Oreochromis niloticus SOBRE LA PRODUCCIÓN PESQUERA DEL EMBALSE EL GUÁJARO ATLÁNTICO - COLOMBIA Translated title: EFFECT OF TILAPIA Oreochromis niloticus OVER THE FISHERIES IN EL GUÁJARO RESERVOIR ATLÁNTICO - COLOMBIA

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          Abstract

          Objetivo. Evaluar el efecto de tilapia Oreochromis niloticus sobre la producción pesquera en el embalse de El Guájaro, departamento del Atlántico, Colombia. Materiales y métodos. El embalse tiene un área aproximada de 14.000 ha y allí pescan diariamente 2.500 pescadores provenientes de ocho municipios que rodean el ecosistema. Por medio de evaluaciones mensuales del desembarco durante 48 horas en todos los puertos, fue evaluada la composición y abundancia de las capturas en 1988 y 2002. Los resultados de la evaluación hecha en 2002 fueron comparados con los obtenidos en 1988. Resultados. 38 especies de peces, perteneciendo a 14 familias fueron identificadas. Sólo las dos especies que dominan las capturas, presentaron una variación en su participación global. La producción durante 2002 fue de 431 ton/mes, superior a las 84 ton/mes evaluadas en el año 1988. Durante 2002, las capturas fueron dominadas por tilapia Oreochromis niloticus (53%) y arenca Triportheus magdalenae (36%) lo que representa una variación en la composición de las capturas que, durante 1988 fueron respectivamente de 13% y 73%. Esta variación no afectó la proporción de herbívoros y carnívoros que se mantuvo en 90-10%. Conclusiones. La variación en la composición y abundancia de la producción total implica el desplazamiento de una especie nativa (Triportheus magdalenae) por una exótica (Oreochromis niloticus), hecho que viene siendo observado en toda la cuenca del Magdalena en esta década.

          Translated abstract

          Objective. To evaluate the effect of tilapia, Oreochromis niloticus, over the fisheries in the El Guájaro reservoir, located in the Atlantico state, north of Colombia. Materials and methods. The reservoir has approximately 14.000 ha, and support the daily effort of 2.500 fisherman, coming from the eight Municipalities around. Through landing samplings carried out during 48 hours and a monthly frequency in all the ports, the abundance and composition of the captures were evaluated during 2002 and compared with the production during 1988 in the same ecosystem. Results. 38 fish species, belonging to 14 families, were identified. It was found that the production in 2002 was 431 ton/month, against 84 ton/month in 1988. During 2002, the composition of the captures was dominated by Oreochromis niloticus (53%) and Triportheus magdalenae (36%) this means a variation in the composition of the captures that during 1988 were respectively of 13% and 73%. This data however, did not affect the proportion of herbivores - carnivorous that stayed constant in 90-10 percent in the two periods of study. Conclusions. The changes in composition and abundance of the whole production suggest a displacement of a native species (Triportheus magdalenae) by an exotic (Oreochromis niloticus), which is being observed throughout the Magdalena river basin in this decade.

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          • Record: found
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          Ecology. Aquaculture--a gateway for exotic species.

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            • Record: found
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            • Article: not found

            Freshwater fish introductions in Spain: facts and figures at the beginning of the 21st century

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              • Record: found
              • Abstract: not found
              • Article: not found

              The Origins of the Nile Perch in Lake Victoria

                Bookmark

                Author and article information

                Contributors
                Role: ND
                Journal
                mvz
                Revista MVZ Córdoba
                Rev.MVZ Cordoba
                Universidad de Córdoba – Facultad de Medicina Veterinaria y Zootecnia. (Córdoba )
                0122-0268
                September 2009
                : 14
                : 3
                : 1796-1802
                Affiliations
                [1 ] Universidad de Sucre Colombia
                Article
                S0122-02682009000300003
                80000a18-d6b4-4b13-a8ea-ed8269fd5e8e

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

                History
                Product

                SciELO Colombia

                Self URI (journal page): http://www.scielo.org.co/scielo.php?script=sci_serial&pid=0122-0268&lng=en
                Categories
                AGRICULTURE, DAIRY & ANIMAL SCIENCE

                Animal agriculture
                Biological invasions,alien species,fisheries production,Invasiones biológicas,especies exóticas,producción pesquera

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