Russian Pacific Salmon: What Catches May We Expect?

IF 0.5 4区生物学 Q4 MARINE & FRESHWATER BIOLOGY Russian Journal of Marine Biology Pub Date : 2024-01-26 DOI:10.1134/s1063074023070088

A. N. Makoedov, A. A. Makoedov

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Abstract

Some parameters of abundance dynamics for the Pacific salmon species breeding in Russian waters are clarified and their possible catch on a medium-term scale estimated. The average annual catch for the 1907–2022 period was approximately 250 000 t. A complete cycle from the minimum values on the curves of one low-abundance period to the respective parameters of another period took approximately 72 years; from the relative maxima of one high-abundance period to another took 75 years. The duration of the high-abundance period was almost 35 years; the low-abundance period was almost 40 years. Taking various uncertainties into account, the periods of high and low abundance were approximately equivalent and remained within a relatively stable range from 35 to 40 years. Most of the high-catch seasons occurred in the odd-numbered years. Dominants usually changed during the periods of increase in Pacific salmon abundance. The average annual catches are expected to be higher than 250 000 t in the second half of the 2020s and the first half of the 2030s. Catch sizes are unlikely to be lower than 200 000 t even in the least productive years. In the final part of the high-abundance period, the raw material base of the Russian salmon fishery does not provide conditions for profitable operations at most of the fishing sites allotted for commercial harvesting.

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俄罗斯太平洋鲑鱼：预计产量如何？

摘要阐明了在俄罗斯水域繁殖的太平洋鲑鱼物种的一些丰量动态参数，并估算了其可能的中期捕获量。1907-2022 年期间的年平均捕获量约为 250 000 吨。从一个低丰度时期曲线上的最小值到另一个时期相应参数的完整周期大约需要 72 年；从一个高丰度时期的相对最大值到另一个时期的相对最大值需要 75 年。高丰度时期持续了近 35 年；低丰度时期持续了近 40 年。考虑到各种不确定因素，高丰度期和低丰度期大致相当，在 35 至 40 年间保持在一个相对稳定的范围内。大部分高捕获季节出现在奇数年。优势种通常在太平洋鲑鱼丰度增加期间发生变化。预计在 2020 年代后半期和 2030 年代前半期，平均年产量将超过 25 万吨。即使在产量最低的年份，捕获量也不太可能低于 20 万吨。在高产期的最后阶段，俄罗斯鲑鱼渔业的原料基础无法为分配给商业捕捞的大部分渔场提供盈利条件。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Russian Journal of Marine Biology 生物-海洋与淡水生物学

CiteScore

1.00

自引率

0.00%

发文量

审稿时长

6-12 weeks

期刊介绍： The Russian Journal of Marine Biology was founded in 1975 by Alexey V. Zhirmunsky, member of the Russian Academy of Sciences. The Russian Journal of Marine Biology covers a wide range of research and some applied aspects of marine biology as a synthetic science related to various fields of study on marine biota and environment. It presents fundamental research on biological processes at molecular, cellular, organismal, and populational levels in marine organisms. Consideration is given to marine objects as models in life sciences. The journal also publishes papers dedicated to events in Russian and international marine biological science and the history of biology.