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Differential population history in the migratory catfishes Brachyplatystoma flavicans and Pseudoplatystoma fasciatum (Pimelodidae) from the Bolivian Amazon assessed with nuclear and mitochondrial DNA markers
Author(s) -
S. Coronel J.,
Maes G. E.,
Claus S.,
Van Damme P. A.,
Volckaert F. A. M.
Publication year - 2004
Publication title -
journal of fish biology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.672
H-Index - 115
eISSN - 1095-8649
pISSN - 0022-1112
DOI - 10.1111/j.0022-1112.2004.00498.x
Subject(s) - biology , mitochondrial dna , haplotype , zoology , population , amazon rainforest , ecology , genetics , genotype , gene , demography , sociology
The 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.