Abstract

An analysis of the size and age composition of the Pacific herring Clupea pallasii from Peter the Great Bay in 1941, 1944, and 1947−2017 has shown the categories of large-, medium-, and small-sized fish that statistically significantly differ in linear size. Their proportions in year-classes are subject to long-term and interannual variations. The identified groups of fish are distinguished by life cycle duration, timing of sexual maturity, and abundance dynamics, but they do not have a complete reproductive isolation. In the long-term dynamics of proportions of the size categories, large- and medium-sized individuals with positive linear growth deviations dominate the considered year-classes during the periods of stock increase; groups of small- and medium-sized fish with negative deviations of growth indices prevail in the years of low abundance.

中文翻译：

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日本海彼德大湾鲱Clupea pallasii鲱鱼的线性增长率动态

摘要

太平洋鲱Clupea pallasii的大小和年龄组成的分析1941年，1944年和1947-2017年来自彼得大帝湾（Peter the Great Bay）的研究表明，大，中，小型鱼的类别在线性大小上有统计学差异。他们在年级中的比例会长期和年度间变化。所确定的鱼类群以生命周期的持续时间，性成熟的时机和丰富的动态来区分，但是它们没有完全的生殖隔离。在规模类别比例的长期动态中，线性增长偏差为正的大中型个体在库存增加期间主导了所考虑的年级；在丰度较低的年份，以生长指数为负偏差的中小型鱼类为准。