Abstract

The diversity of life strategy, population structure, size, age and sex composition, growth and variability of 11 microsatellite loci in mykiss (rainbow trout) Parasalmo mykiss of the Utkholok River (Northwestern Kamchatka) were studied. The mykiss population represents a system of groupings with different types of life strategy: anadromous fish prevail in the population, while river and semi-anadromous (estuarine and riverine-estuarine) fish are less common. Each of the groupings has specific size, age and sex composition, the ratio of the first time-maturing and re-maturing fish. At that, the individuals with different types of life strategy reproduce together on the same spawning grounds and there is no isolation between them. Analysis of the variability of microsatellite loci revealed no significant differences for any locus between the observed genotypic distributions and the theoretical Hardy – Weinberg distributions. The genetic differentiation of mykiss in the Utkholok River relates to the differences between fish with a river-estuarine life strategy and the others in three loci (Ots3, One108, and One112). The results of clustering show the maximum value of the probability of belonging to the same cluster of all mykiss individuals with different life strategies. Significant differences at the some loci are not evidencing their reproductive isolation. It has been found that mykiss population of Utkholok River is an integrated dynamic system of groupings with different types of life strategies, which are formed in each generation because of the cumulative impact of environmental factors and heredity.

中文翻译：

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堪察加彩虹鳟Parasalmo mykiss生活策略多样性形成和遗传变异的规律

摘要

拟南芥（虹鳟鱼）中11个微卫星基因座的生活策略，种群结构，大小，年龄和性别组成，生长和变异性的多样性研究了乌特霍克河（堪察加西北部）。mykiss种群代表着具有不同生活策略类型的分组系统：种群中盛行鱼类，而河鱼类和半厌食鱼类（河口和河口鱼类）则较少见。每个组都有特定的大小，年龄和性别组成，以及第一次成熟和重新成熟的鱼的比例。那时，具有不同生活策略类型的个体在相同的产卵场上一起繁殖，并且它们之间没有隔离。对微卫星基因座变异性的分析表明，观察到的基因型分布与理论上的Hardy – Weinberg分布之间的任何位点都没有显着差异。Ots3，One108和One112）。聚类结果显示了具有不同生活策略的所有mykiss个体属于同一聚类的概率的最大值。在某些基因座上的显着差异并未证明其生殖隔离。已经发现，Utkholok河的mykiss人口是一个综合的动态系统，具有不同类型的生活策略，这些群体由于环境因素和遗传的累积影响而在每一代中形成。