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Comparison of genetic diversity at microsatellite loci in near‐extinct and non‐endangered species of Mexican goodeine fishes and prediction of cross‐amplification within the family
Author(s) -
Hamill R. M.,
Webb S. A.,
Macías Garcia C.,
Graves J. A.,
Magurran A. E.,
Ritchie M. G.
Publication year - 2007
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.1095-8649.2006.01288.x
Subject(s) - biology , microsatellite , genetic diversity , locus (genetics) , allele , genetics , evolutionary biology , endangered species , genetic distance , null allele , genetic variation , zoology , ecology , gene , population , demography , sociology , habitat
The cross‐utility of 12 microsatellite loci (including nine newly developed loci) amongst the viviparous subfamily, the Mexican Goodeinae, was assessed, examining both the probability of amplification and the potential incidence of null alleles from tests of F IS . Genetic diversity was relatively high in comparison to other freshwater species. Amplification success was not correlated with genetic distance between microsatellite source and target species, but taxa that were more distantly related were less likely to be cross‐polymorphic for microsatellite loci. On average, species that were cross‐polymorphic were separated by a genetic distance of 15% at the cytochrome oxidase I locus, while those that were monomorphic were separated by 19%. There was no evidence that null alleles become more frequent at greater source‐target genetic distance.