Fishes of the Taquari-Antas river basin (Patos Lagoon basin), southern Brazil

Brazilian Journal of Biology

Fg. Becker²  Fries Lcc. De¹  J. Ferrer¹  Va. Bertaco¹  Kdg. Luz-agostinho¹  Jfp Silva¹  Ar. Cardoso¹  Zms. Lucena¹  Cas. Lucena¹ 

[1] ,Universidade Federal do Rio Grande do Sul Departamento de Ecologia Laboratório de Ecologia de PaisagemPorto Alegre RS ,Brazil

关键词: ichthyofauna;    biodiversity;    survey;    neotropical;    Rio Grande do Sul;    ictiofauna;    biodiversidade;    inventário;    neotropical;    Rio Grande do Sul;   

DOI  :  10.1590/S1519-69842013000100010

来源: SciELO

【 摘 要 】

The aquatic habitats of the Taquari-Antas river basin (in the Patos Lagoon basin, southern Brazil) are under marked environmental transformation because of river damming for hydropower production. In order to provide an information baseline on the fish fauna of the Taquari-Antas basin, we provide a comprehensive survey of fish species based on primary and secondary data. We found 5,299 valid records of fish species in the basin, representing 119 species and 519 sampling sites. There are 13 non-native species, six of which are native to other Neotropical river basins. About 24% of the total native species are still lacking a taxonomic description at the species level. Three native long-distance migratory species were recorded (Leporinus obtusidens, Prochilodus lineatus, Salminus brasiliensis), as well as two potential mid-distance migrators (Parapimelodus nigribarbis and Pimelodus pintado). Although there is only one officially endangered species in the basin (S. brasiliensis), restricted range species (21.7% of total species) should be considered in conservation efforts.

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