USE OF BIOCHEMICAL GENETIC-VARIANTS FOR IDENTIFICATION OF SOCKEYE SALMON (ONCORHYNCHUS-NERKA) STOCKS IN COOK INLET, ALASKA
USE OF BIOCHEMICAL GENETIC-VARIANTS FOR IDENTIFICATION OF SOCKEYE SALMON (ONCORHYNCHUS-NERKA) STOCKS IN COOK INLET, ALASKA
复制标题
DOI：
10.1139/f80-159
复制
发表时间：
1980-01-01
影响因子：
2.4
通讯作者：
UTTER, FM
中科院分区：
文献类型：
--
作者：
GRANT, WS;MILNER, GB;UTTER, FM
研究了红鲑生化遗传变异的地理分布。nerka）来描述其种群结构的特征，并确定阿拉斯加库克湾中心渔区商业渔获量的种群。利用淀粉凝胶电泳技术对13个产卵场的6个多态位点进行了等位基因频率测定，并将其作为种群分类的依据。平均杂合度估计的遗传变异水平为4.6%。等位基因频率之间的异质性的似然比测试表明，Susitna和基奈河的产卵区之间的异质性显着程度，但不是在Kasilof河的产卵区。对于Kasilof河，在那里采取多年的样本，等位基因频率没有显着不同的连续2年。样本之间的遗传相似性的聚类分析表明，从Kasilof河的样本是不同的基奈和Susitna河的样本，但基奈和Susitna河的样本是没有区别于彼此。在商业捕鱼季节，每周对从定置刺网和流网捕鱼中收集的样本的种群组成进行最大似然估计。苏西特纳河的鱼在1976年流入库克湾时占主导地位。
The geographic distributions of biochemical genetic variants in sockeye salmon (O. nerka) were used to describe features of its population structure and to identify stocks in commercial catches from the central fishing district of Cook Inlet, Alaska. Allelic frequencies for 6 polymorphic loci were determined for samples of 13 spawning areas using starch gel electrophoresis and were used as the basis of stock classification. The level of genetic variation, estimated by average heterozygosity, was 4.6%. Likelihood ratio tests for heterogeneity among allelic frequencies indicated a significant degree of heterogeneity among spawning areas within the Susitna and Kenai rivers, but not among the spawning areas within the Kasilof River. For the Kasilof River, where multi-year samples were taken, allelic frequencies were not significantly different for 2 consecutive years. Cluster analysis of genetic similarities between samples indicated that the samples from the Kasilof River were distinct from samples of the Kenai and Susitna rivers, but that Kenai and Susitna River samples were not distinct from one another. Maximum likelihood estimates of the stock composition of samples collected from the set- and drift-gillnet fisheries were made on a weekly basis during the commercial fishing season. Susitna River fish predominated in the 1976 run into Cook Inlet.