Scholarlink

Abstract— <p>Currently, the size and age composition of the sterlet <i>Acipenser ruthenus</i> in the Nizhnekamsk Reservoir have significantly decreased. Due to the decrease in the area of breeding grounds for the species, its feeding area is also localized, extending mainly to the upper reaches of the reservoir. Long maturation of females, breeding gaps and relatively low fecundity rates lead to a reduction in the sterlet population. The state and size of the commercial stock of the species currently do not exceed the critical values of the management guidelines, which indicates that the population remains within the safe boundaries of fishing.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

The Sterlet Acipenser ruthenus (Acipenseridae) in the Nizhnekamsk Reservoir: Structure of Catches, Biological Parameters and Prospects for Stock Use

  • 期刊论文

  • 发表日期：

    2025年12月1日

查看全文
  • Yu. A. Severov,
  • A. V. Granin,
  • M. A. Gorshkov

摘要

Abstract—

Currently, the size and age composition of the sterlet Acipenser ruthenus in the Nizhnekamsk Reservoir have significantly decreased. Due to the decrease in the area of breeding grounds for the species, its feeding area is also localized, extending mainly to the upper reaches of the reservoir. Long maturation of females, breeding gaps and relatively low fecundity rates lead to a reduction in the sterlet population. The state and size of the commercial stock of the species currently do not exceed the critical values of the management guidelines, which indicates that the population remains within the safe boundaries of fishing.