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首页> 外文期刊>ICES Journal of Marine Science >Horizontal distributions of Dungeness crab (Cancer magister) and red rock crab (Cancer productus) larvae in the Strait of Georgia, British Columbia
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Horizontal distributions of Dungeness crab (Cancer magister) and red rock crab (Cancer productus) larvae in the Strait of Georgia, British Columbia

机译：不列颠哥伦比亚省格鲁吉亚海峡的Dungeness蟹（Cancer magister）和红岩蟹（Cancer productus）幼虫的水平分布

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摘要

The supply of planktonic larvae to adult populations is an important contributor to the spatial and temporal variability of benthic marine organisms. The ability to predict spatial patterns of larvae and recruits from the physical and biological processes that facilitate dispersal is required in order to advise and evaluate conservation and fisheries management decisions. In the present study, the horizontal distribution of Dungeness crab (Cancer magister) and red rock crab (Cancer productus) zoeae was described from surveys conducted in the Strait of Georgia in the spring of 2009 and 2010. Processes that may be responsible for generati ng spatial variability of larvae were evaluated based on (ⅰ) horizontal overlap between larvae and water properties, (ⅱ) spatial dependence of larvae and water properties, and (ⅲ) changes in the dispersion of stage-specific distributions. Interspecific variability between horizontal patterns of the first and second larval stages was primarily attributed to differences in the distribution of larval release locations, which appeared to be restricted to the southern and central strait for C. magister. Potential effects of physical processes on larval distributions are also discussed.
机译：向成年种群提供的浮游幼虫是对底栖海洋生物的时空变化的重要贡献。为了建议和评估养护和渔业管理决策，需要具有从有助于分散的物理和生物过程中预测幼虫和新生的空间格局的能力。在本研究中，从2009年春季和2010年春季在佐治亚州海峡进行的调查描述了太平洋大蟹（Cancer magister）和红岩蟹（Cancer productus）zoeae的水平分布。幼虫的空间变异性是根据（ⅰ）幼虫和水质之间的水平重叠，（ⅱ）幼虫和水质的空间依赖性以及（ⅲ）阶段特定分布的分散性变化来评估的。第一和第二个幼虫阶段水平模式之间的种间差异主要归因于幼虫释放位置分布的差异，这似乎仅限于C. magister的南部和中部海峡。还讨论了物理过程对幼虫分布的潜在影响。

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