Abstract

The outcomes of qualitative assessment of the status of fishery stocks of the black-spined herring Alosa kessleri kessleri in the Volga River Delta have been reported. The data on the size composition of catches of the black-spined herring who migrated to the Volga River Delta to spawn in species peak fishing seasons in 1990–2000 and the latest data for 2016–2021, when the low biological values after the period of rapid decline in the stock size in the early 2000s, are used. The length-based indicator method assigned to the methods applied to assess data-poor fish stocks was used to determine indicators for the black-spined herring status in 1990–2000 and 2016–2021. This method allowed us to assess the qualitative status of stocks and the impact of fishery on them in the study periods. The outcomes may be used in recommеndations for black-spined herring fishery regulation.

中文翻译：

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LBI法对伏尔加河三角洲黑刺鲱科鱼类资源状况的定性评价

摘要

伏尔加河三角洲黑脊鲱 Alosa kessleri kessleri 渔业资源状况定性评估结果已报告。1990-2000年物种捕捞高峰期洄游到伏尔加河三角洲产卵的黑脊鲱渔获量大小构成数据以及2016-2021年的最新数据，当时的生物值较低。 2000年代初库存规模迅速下降，被采用。分配给用于评估数据贫乏鱼类种群的方法的基于长度的指标方法被用来确定1990-2000年和2016-2021年黑脊鲱状况的指标。这种方法使我们能够评估研究期间种群的质量状况以及渔业对其的影响。研究结果可用于黑脊鲱渔业监管的建议。