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Primers from the orders Osteoglossiform and Siluriform detect polymorphic microsatellite loci in sun‐catfish, Horabagrus brachysoma (Teleostei: Bagridae)
Author(s) -
Gopalakrishnan A.,
Abdul Muneer P. M.,
Musammilu K. K.,
Lal K. K.,
Kapoor D.,
Mohindra V.
Publication year - 2006
Publication title -
journal of applied ichthyology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.392
H-Index - 62
eISSN - 1439-0426
pISSN - 0175-8659
DOI - 10.1111/j.1439-0426.2006.00767.x
Subject(s) - biology , microsatellite , locus (genetics) , genetics , catfish , teleostei , genotyping , zoology , allele , genotype , fishery , fish <actinopterygii> , gene
Summary Horabagrus brachysoma (sun‐catfish, Bagridae, Siluriformes) is a valuable ornamental and food fish. The stock structure of H. brachysoma , necessary to conserve its declining natural populations, is not known. Twenty‐five primers developed for four fish species belonging to the orders Siluriform (3) and Osteoglossiform (1) were tested and eight primers amplified microsatellite loci in H. brachysoma . The results demonstrate that cross‐priming between fish species belonging to different families and even to different orders can yield microsatellite loci. Five of eight primers each amplified two loci. However, the loci that had repeat motifs after sequencing were considered only for genotyping. Finally, eight loci were polymorphic with hree to seven alleles. Individual fish genotype data (n = 42; 21 each in two rivers) at each locus was analysed. Significant genetic heterogeneity was detected at six loci. The identified loci exhibited potential for use in population genetics application in H. brachysoma .