Abstract—

The state of the blue crab stock and production is considered for the Russian sector of the Bering Sea on the data of bottom trawl and trap surveys conducted by TINRO in 2005–2017 and fishery statistics. The commercial stock was assessed for 2018 by cohort analysis. The absolute majority of commercial males within the West Bering Sea fishing zone concentrated in two areas located at Koryak coast and at Cape Navarin, whereas the commercial aggregations were absent in the Olyutorsky Bay and Karaginsky Bay. The stock distribution between these two areas was unstable; recently, the aggregation at Koryak coast increased to 72% of the total number of commercial males in 2017. This dynamics is due to both changes in reproduction and the intensity of fishery. The total commercial stock of blue crab increased since 2014 and reached its maximum of 18.133 × 10⁶ ind. (males) in 2017, which significantly exceeded the level of 2005–2013. The blue crab fishery extends in the Bering Sea; since 2010 the portion of used TAC increased from approximately 93% in 2011–2015 to 98% in 2016–2017 and 99% in 2018. The state of the population is evaluated as satisfactory and stable.

中文翻译：

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白令海西北部蓝蟹 (Paralithodes platypus Brandt, 1849) 的种群动态

摘要-

根据 TINRO 在 2005-2017 年进行的底拖网和陷阱调查数据以及渔业统计数据，考虑了白令海俄罗斯部分的蓝蟹种群和产量状况。通过队列分析评估了 2018 年的商业库存。西白令海捕鱼区内的绝大部分商业性雄鱼集中在位于科里亚克海岸和纳瓦林角的两个区域，而奥柳托尔斯基湾和卡拉金斯基湾则没有商业性聚集。这两个地区之间的库存分布不稳定；最近，Koryak 海岸的聚集增加到 2017 年商业雄性总数的 72%。这种动态是由于繁殖和渔业强度的变化。自2014年以来，蓝蟹的商业库存总量有所增加，达到最大值18只。⁶工业 （男性）在 2017 年显着超过 2005-2013 年的水平。蓝蟹渔业延伸到白令海；自 2010 年以来，使用的 TAC 比例从 2011-2015 年的约 93% 增加到 2016-2017 年的 98% 和 2018 年的 99%。人口状况被评估为令人满意和稳定。