Genetic changes in hatchery stocks of brown trout (Salmo trutta).
Genetic changes in hatchery stocks of brown trout (Salmo trutta).
复制标题
褐鳟（Salmo trutta）孵化场种群的遗传变化。
DOI：
10.1139/f80-008
复制
发表时间：
1980
影响因子：
2.4
通讯作者：
G. Ståhl
中科院分区：
文献类型：
--
作者：
N. Ryman;G. Ståhl
保存种群的遗传特征是许多鱼类放养计划的主要目标之一。利用淀粉凝胶电泳，我们测试了α-甘油磷酸脱氢酶和肌酸磷酸激酶两个多态性位点的时间基因频率稳定性。对三种瑞典褐鳟孵化场种群和其中两种种群对应的野外种群样本进行了分析。两个位点等位基因频率的显著变化表明种群内遗传同质性明显不足。鉴于这些发现，我们强调使用大量实际和有效的父母的重要性，以避免无意的遗传变化和近亲繁殖。在任何一代中，不应使用少于大约30个性别最少的亲本来建立或延续任何一个种群。关键词：近交，遗传漂变，基因库，电泳，放养，鳟鱼
Preservation of the genetic characteristics of a population is one of the primary objectives of many fish stocking programs. Using starch gel electrophoresis we have tested for temporal gene frequency stability at two polymorphic loci coding for α-glycerophosphate dehydrogenase and creatine phosphokinase. Three Swedish hatchery stocks of brown trout (Salmo trutta) and field samples from natural populations corresponding to two of these stocks were analyzed. Highly significant allele frequency changes at both loci indicated considerable lack of intra-stock genetic homogeneity. In the light of these findings we emphasize the importance of using large numbers of actual as well as effective parents to avoid inadvertent genetic changes and inbreeding. No stock should be founded or perpetuated using less than approximately 30 parents of the least numerous sex in any generation.Key words: inbreeding, genetic drift, gene bank, electrophoresis, stocking, trout