Abstract

The direction of phylogenesis of beaked redfish Sebastes mentella is considered based on a comparative analysis of the parasite fauna and maturation rate of individuals in the pelagic and near-bottom groups in the North Atlantic and the Norwegian-Barents sea populations. The individuals of the beaked redfish inhabiting the pelagic and bathyal zones of the Norwegian Sea’s northern part are characterized by a significantly higher similarity of the parasite fauna and lesser differences in the length and maturation age than that living in the pelagic and bathyal zones of the North Atlantic seas. This may indicate that the pelagic group of beaked redfish in the Norwegian Sea is at an earlier stage of formation than the pelagic group in the Irminger and Labrador seas, and the Norwegian-Barents sea population is phylogenetically younger than the North Atlantic one. The occurrence of mass migration of beaked redfish individuals from the pelagic zone of the Irminger Sea to the Norwegian Sea indicates a probable source of origin of its Norwegian-Barents sea population.

中文翻译：

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寄生虫和成熟率作为喙红RedSebastes mentella（Sebastidae）种群结构的指标

摘要

喙红鱼Sebastes mentella的系统发育方向根据对北大西洋和挪威-巴伦支海种群中上层和近下层群体中个体的寄生虫动物区系和成熟率的比较分析来考虑该物种。栖息在挪威海北部中上层和深水区的喙红鱼的特征是，与生活在北部上层和深水区的相比较，寄生虫动物群的相似性明显更高，长度和成熟年龄的差异也较小。大西洋海。这可能表明，挪威海中的喙红鱼的中上层群比爱明格海和拉布拉多海中的中层群处于形成早期，并且挪威-巴伦支海种群在系统发育上比北大西洋的年轻。