Genetic characterization of the Neotropical catfish Pimelodus maculatus (Pimelodidae, Siluriformes) in the Upper Uruguay River

Genetics and Molecular Biology

Josiane Ribolli¹  Cláudio Manoel Rodrigues De Melo²  Evoy Zaniboni-filho¹ 

[1] ,Universidade Federal de Santa Catarina Departamento de Aquicultura Laboratório de Biologia e Cultivo de Peixes de Água DoceFlorianópolis SC ,Brazil

关键词: conservation genetics;    dams;    habitat fragmentation;    microsatellite;   

DOI  :  10.1590/S1415-47572012005000060

来源: SciELO

【 摘 要 】

Freshwater fish present unique challenges when one attempts to understand the factors that determine the structure of their populations. Habitat fragmentation is a leading cause of population decline that threatens ecosystems worldwide. In this study, we investigated the conservation status of genetic variability in the Neotropical catfish (Pimelodus maculatus). Specifically, we examined the structure and genetic diversity of this species in a region of the Upper Uruguay River fragmented by natural barriers and dams. There was no genetic structure among the four sites analyzed, indicating the existence of only one population group. A combination of environmental management and genetic monitoring should be used to minimize the impact of impoundment on panmitic populations of migratory fish species.

【 授权许可】

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