Larval distribution, abundance, and stock structure of British Columbia herring
Larval distribution, abundance, and stock structure of British Columbia herring
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不列颠哥伦比亚鲱鱼幼体分布、丰度和种群结构
DOI：
10.1111/j.1095-8649.1997.tb06098.x
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发表时间：
1997
影响因子：
2
通讯作者：
P. Mccarter
中科院分区：
文献类型：
--
作者：
D. Hay;P. Mccarter
太平洋鲱鱼在浅水和潮间带产卵。幼虫的分布和丰富的三个主要和几个次要的股票进行了检查，以确定幼虫混合在不同的产卵地点。调查时间短，密集，主要发生在幼虫生命的前30天。每个主要股票有一个离散的幼虫分布连续幼虫分布在股票边界。在较小的种群中，分布出现了一些重叠。大部分幼虫在近岸沃茨发现，但没有明显的海洋学因素，如锋或漩涡，以解释所有的分布。在某些地区，河口环流可以促进幼虫滞留。研究结果支持目前的地理定义当地鲱鱼种群。这些结果与作为鲱鱼种群结构基础的离散幼虫分布（包括滞留区）的概念基本一致。
Pacific herring Clupea pallasi spawn in shallow and intertidal areas. Larval distributions and abundance of three major and several minor stocks were examined to determine if larvae mix among different spawning locations. The surveys were short, intensive, and occurred mainly within the first 30 days of larval life. Each major stock had a discrete larval distribution with continuous larval distributions within stock boundaries. Some overlap of distributions occurred among smaller stocks. Most larvae were found in inshore waters but there were no obvious oceanographic factors, such as fronts or eddies, to explain all the distributions. Estuarine circulation in inlets could promote larval retention in some areas. The results support the present geographic definitions for local herring stocks. The results are generally consistent with the concept of discrete larval distribution, including retention areas, as the basis for herring Stock Structure.