Premium
Breakdown of the brown trout evolutionary history due to hybridization between native and cultivated fish
Author(s) -
Araguas R. M.,
Sanz N.,
Pla C.,
GarcíaMarín J. L.
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.0022-1112.2004.00544.x
Subject(s) - brown trout , biology , introgression , salmo , stocking , trout , fish <actinopterygii> , loss of heterozygosity , population , zoology , genetic diversity , ecology , fishery , allele , genetics , gene , demography , sociology
Genetic changes in the population structure of brown trout Salmo trutta in the eastern Pyrenees were monitored during the 1990s. Stocking with cultivated exogenous fish has resulted in introgressed populations where those with higher introgression coefficients also have the highest values of heterozygosity. Nevertheless, this increase of local diversity reflects a decrease of genetic differentiation between populations and loss of native alleles. These changes obscure native gene pools and modify evolutionary distinctions among native brown trout populations.