Causes of Variations in Year-Class Strength of Amur Pink Salmon, Oncorhynchus gorbuscha (Walbaum)

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/s1063074023070143

V. I. Ostrovsky

引用次数: 0

Abstract

The relationship of Amur pink salmon catches in 1980–2018 with those landed 2 years before the current year’s fishing season is assessed. This relationship can be well approximated by a linear regression equation; the deviations from it are explained almost completely by variations in precipitation and air temperatures in the autumn and winter of the spawning year. It has been shown that the overestimated forecast of pink salmon catch for 2018 is due to the lowest amount of precipitation for the 40-year period with the lowest air temperature in 2016. The causes for the strength variations between the pink salmon year-classes of even- and odd-numbered years are discussed.

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阿穆尔粉鲑--Oncorhynchus gorbuscha (Walbaum) 年级实力变化的原因

摘要评估了 1980-2018 年阿穆尔粉鲑渔获量与当年捕鱼季节前两年的渔获量之间的关系。这种关系可以用线性回归方程很好地近似；偏离这种关系的情况几乎完全可以用产卵年秋冬季降水和气温的变化来解释。研究表明，2018 年粉红鲑鱼捕获量预测值被高估的原因是 40 年间降水量最少，而 2016 年气温最低。讨论了偶数年和奇数年粉红鲑年级之间强度变化的原因。

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.