Distribution of protein variation in skipjack tuna (Katsumonus pelamis) from the central and south-west Pacific
Distribution of protein variation in skipjack tuna (Katsumonus pelamis) from the central and south-west Pacific
复制标题
中太平洋和西南太平洋鲣鱼 (Katsumonus pelamis) 蛋白质变异的分布
DOI：
10.1071/mf9830231
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发表时间：
1983
影响因子：
1.8
通讯作者：
Bj Richardson
中科院分区：
文献类型：
--
作者：
Bj Richardson
对鲣鱼中 42 个基因座的蛋白质变异进行了电泳调查。发现了鸟嘌呤脱氨酶的新多态性以及葡萄糖磷酸异构酶和腺苷脱氨酶的低频变异。该物种的平均杂合度为 0 032。给出了 70 个样本集（每个样本集大约 100 只动物）在四个可变位点的基因频率，这些样本集是在整个南太平洋委员会地区收集的。整个研究区域中羧酸酯酶和鸟嘌呤脱氨酶的等位基因频率呈现东西向变化。这些位点的等位基因频率也存在区域内异质性。根据遗传数据对先前提出的鲣鱼种群结构的离散种群模型和新的距离隔离模型进行了检验。
Forty-two loci were electrophoretically surveyed for protein variation in the skipjack tuna. A new polymorphism in guanine deaminase was found as well as low-frequency variation in glucosephosphate isomerase and adenosine deaminase. Average heterozygosity for the species was 0 032. The gene frequencies at four variable loci for 70 sample sets, each of approximately 100 animals, collected at locations throughout the South Pacific Commission region, are given. East-west clines in allele frequencies for carboxylesterase and guanine deaminase occur across the study area. There is also within-area heterogeneity in allele frequency at these loci. Previously proposed discrete-stock models and a new isolation-by-distance model for the population structure of skipjack tuna are examined in the light of the genetic data.