Vasemägi A, Gross R, Paaver T, Kangur M, Nilsson J, Eriksson L O
Department of Aquaculture, Swedish University of Agricultural Sciences, S-901 83 Umeå, Sweden.
Mol Ecol. 2001 Dec;10(12):2877-82. doi: 10.1046/j.1365-294x.2001.t01-1-01407.x.
The founder event in a recently recolonized salmon population in the Baltic Sea (Gulf of Finland) was investigated. To identify the origin of the founders, four wild populations and two hatchery stocks were analysed using six microsatellite loci. The results of assignment tests and factorial correspondence analysis suggest that the initial recolonizers of the river Selja originated from the geographically nearest (7 km) wild population (river Kunda) but as the result of stocking activities, interbreeding between recolonizers and hatchery individuals has occurred in subsequent years. Although the hatchery releases are outnumbering the wild salmon recruitment in the Baltic Sea at present, our results suggest that the native populations may still have an important role in colonization processes of the former salmon rivers.
对波罗的海（芬兰湾）一个最近重新定殖的鲑鱼种群的奠基者事件进行了调查。为了确定奠基者的来源，利用六个微卫星位点对四个野生种群和两个孵化场种群进行了分析。分配测试和因子对应分析的结果表明，塞尔亚河最初的重新定殖者来自地理上最近（7公里）的野生种群（昆达河），但由于放流活动，在随后的几年里，重新定殖者与孵化场个体之间发生了杂交。尽管目前在波罗的海，孵化场放流的数量超过了野生鲑鱼的补充量，但我们的结果表明，本地种群在前鲑鱼河流的定殖过程中可能仍然发挥着重要作用。
