Differential population history in the migratory catfishes Brachyplatystoma flavicans and Pseudoplatystoma fasciatum (Pimelodidae) from the Bolivian Amazon assessed with nuclear and mitochondrial DNA markers
2004; Wiley; Volume: 65; Issue: 3 Linguagem: Inglês
10.1111/j.0022-1112.2004.00498.x
ISSN1095-8649
AutoresJorge S. Coronel, Gregory E. Maes, S. C. Claus, Paul A. Van Damme, F.A.M. Volckaert,
Tópico(s)Fish Ecology and Management Studies
ResumoThe catfishes Brachyplatystoma flavicans ( n = 49) and Pseudoplatystoma fasciatum ( n = 69) showed comparable low allozyme diversities ( H e = 0·012 and 0·009–0·028, respectively), but contrasting PCR‐RFLP restriction site mitochondrial DNA diversities (three haplotypes: π = 0·034–0·092 and five haplotypes: π = 0·001–0·023, respectively) in the Rio Ichilo and Beni (Bolivia). Genetic homogeneity between samples was high for B. flavicans and lower for P. fasciatum . Based on mitochondrial diversity, both species probably experienced a historic population reduction but at different time scales.
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