Features of Temporal Differentiation of the Chum Salmon Oncorhynchus keta of the Anadyr Bay Region at Different Abundance Levels

被引：1
|
作者：
Makoedov A.N. [1 ]
Korotaev Yu.A. [1 ]
Korotaeva O.B. [1 ]
机构：
[1] Chukotka Div. Pac. Fish. Res. Ctr., Anadyr
来源：
Russian Journal of Marine Biology | 2001年 / 27卷 / 4期
关键词：
Abundance level; Anadyr bay; Chum salmon; Differentiation; External morphological features; Fluctuating asymmetry; Spawners; Spawning grounds; Spawning run; Temporal heterogeneity;
D O I：
10.1023/A:1011915419911
中图分类号：
学科分类号：
摘要：
The temporal heterogeneity of chum salmon stock of the Anadyr Bay region was investigated on the basis of a set of discrete external morphological features and fluctuating asymmetry level of some meristic structures. Differentiation of Anadyr Bay chum salmon during the spawning run was found to be associated with the abundance level of spawning stock in a particular year. Sharply pronounced temporal heterogeneity, based on the investigated characteristics, in the area near the river mouth can be considered as an indicator of the subsequent deficiency of spawners on the spawning grounds of rivers in the Anadyr Bay region.
引用
收藏
页码：238 / 244
页数：6
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