RAP inventory of the ichthyofauna of the Aurra River and its tributaries in San Jerónimo, Antioquia
DOI:
https://doi.org/10.17533/udea.acbi.329504Keywords:
RAP (rapid assessment procedure) inventories, ichthyofauna, electrofishing, Aurra river, human impactsAbstract
A RAP (rapid assessment procedure) inventory of the ichthyofauna of the Aurra river watershed (San Jerónimo, Antioquia) was conducted. The design for the selection of study sites attempted to permit an evaluation of possible human impacts on the local ichthyofauna. Electrofishing techniques were employed, permitting the sampling of eight sites during the same day, yielding a total of 374 individuals belonging to seventeen species from five different families. Three of the species collected have not been reported previously for the middle Cauca drainage. A significant negative relationship between ichthyological diversity and the distance of the sites to the Cauca river was documented. Although no effects of apisciculture facility were detected, the sites near the town of San Jerónimo demonstrated lower diversity values, as compared to other study sites of similar distances from the Cauca river. This study shows that rapid inventories of the freshwater ichthyofauna of Colombia may provide valuable information on distributional ranges within the country and on the impact of human activities.
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