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Capturas ícticas incidentales de la pesca ornamental en el período de aguas bajas en el área de influencia de Puerto Carreño, Orinoquia colombiana

Author(s): Saúl Prada-Pedreros | Jhon González-Forero | Juan Mondragón-Estupiñan

Journal: Universitas Scientiarum
ISSN 0122-7483

Volume: 14;
Issue: 2-3;
Start page: 173;
Date: 2009;
Original page

Keywords: bycatch | CPUE | ornamental fish | Puerto Carreño

Incidental bycatch by ornamental fishing during the low-water season in the influence zone of Puerto Carreño, ColombianOrinoco Basin. Objective. The present study assesses the incidental fish catches in the fishing of ornamental species in terms ofrichness and abundance within the influence zone of Puerto Carreño, Vichada, Colombia. Materials and methods. Samplings werecarried out in the Orinoco River and Bita River and Caño Negro stream during the low-water season, in March and April of 2007. Targetand incidental species collected during the ornamental fishing totalized 152. Catches per unit of effort (CPUE) as well as the percentagecomposition of fish catches of target vs. incidental species were estimated. Results. The highest values of CPUE of fishes with ornamentalvalue correspond to: Dicrossus maculatus, Hemigrammus rodhostomus, Corydoras cf. melanistius, Peckoltia sp. 2 and Hemiancistrussp., and the highest values of incidental species were for: Hemigrammus sp., Moenkhausia sp., Hemigrammus levis, Aphanothorulus cf.ammophilus, Triportheus sp. y Moenkhausia lepidura. The richness percentage of incidental species varied between 92% and 98%.However the abundance percentage of target species was always higher than the percentage of incidental catches varying between 73%and 83% with the exception of that obtained in the fisheries of the Orinoco River outcrops that was 17%. Conclusions. The impact of thefishing ornamental fish on species taught incidentally is seen mainly at the level of richness, but not at the level of abundance.
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