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图门河鱼的年龄和生长

Anqi Wang^1,2,3,4, Peilun Li^1,2,3, Fujiang Tang^1,2,3

¹Heilongjiang River Fisheries Research Institute, Chinese Academy of Fishery Sciences, Harbin, China.

|September 2, 2025

概括

图门河的鱼以同位数增长,其种群主要由年轻人组成. 这项研究为管理这一重要的鱼群提供了关键数据.

科学领域:

鱼类学
人口动态
渔业科学

背景情况:

鱼 (Oncorhynchus keta) 对图门河的生态系统和经济至关重要.
了解它们的年龄结构和生长对于有效的渔业管理至关重要.

研究的目的:

确定图门河鱼的年龄结构和生长特征.
为保护和管理这一群体提供科学数据.

主要方法:

对331只鱼标本 (2020-2023) 的年龄确定和叉长度 (FL) 和体重 (BW) 的测量.
分析BW和FL之间的关系,并应用Von Bertalanffy增长方程 (VBGF).
使用余平方和分析 (ARSS) 来比较年龄组和性别之间的生长模式.

主要成果:

产卵群包括四个年龄组 (2+,3+,4+,5+),其中2+和3+个体占96.37%.
鱼呈现出异比增长 (BW=0.0159×FL^2.8969).
性别之间没有发现显著的生长差异,但在2岁以上和3岁以上的年龄组之间存在显著的差异.

结论:

图门河鱼种群的特点是年轻个体占主导地位,并且具有同位体生长.
雌性大约达到45.87厘米,雄性大约达到43.93厘米.
这项研究为以科学为基础的管理和保护工作提供了重要的生物数据.

关键词:

年龄鱼的情况增长特征图门河

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