Breakdown of the brown trout evolutionary history due to hybridization between native and cultivated fish

被引:39
作者
Araguas, RM [1 ]
Sanz, N [1 ]
Pla, C [1 ]
García-Marín, JL [1 ]
机构
[1] Univ Girona, Lab Ictiol Genet, E-17071 Girona, Spain
关键词
evolutionary history; hybridization; introgression; Salmo trutta; stocking;
D O I
10.1111/j.0022-1112.2004.00544.x
中图分类号
S9 [水产、渔业];
学科分类号
0908 ;
摘要
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. (C) 2004 The Fisheries Society of the British Isles.
引用
收藏
页码:28 / 37
页数:10
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