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首页> 外文期刊>ICES Journal of Marine Science >Stock identification of Atlantic cod (Gadus morhua) in US waters: an interdisciplinary approach
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Stock identification of Atlantic cod (Gadus morhua) in US waters: an interdisciplinary approach

机译：在美国水域中大西洋鳕鱼（Gadus morhua）的种群识别：一种跨学科方法

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摘要

Mismatches between biological population structure and management unit boundaries often violate the unit-stock assumption, which can reduce the accuracy and relevance of stock assessment results and lead to ineffective fishery management. Since 1972, Atlantic cod (Gadus morhua) have been managed in US waters as two units: the Gulf of Maine and the Georges Bank stocks, both of which have experienced recent difficulties in rebuilding. An interdisciplinary review of available biological information was conducted to investigate cod population structure in US waters and to evaluate the biological appropriateness of the current two-stock model. Our review demonstrates that spawning components in the Great South Channel, Nantucket Shoals, southern New England, and Middle Atlantic are more connected with spawning components in the Gulf of Maine than on eastern Georges Bank, with which they are currently managed. Therefore, a modification of current stock boundaries is recommended to provide a more accurate representation of biological population structure. Proposed alternatives divide inshore and offshore spawning components into separate management units, thereby separating the current Georges Bank stock longitudinally. Continued research, including stock composition analysis, is required to evaluate uncertainties, delineate biological stocks, and develop sustainable management practices that account for intrastock diversity (e.g. winter and spring-spawning components that overlap spatially).
机译：生物种群结构与管理单位边界之间的不匹配通常会违反单位种群假设，这可能会降低种群评估结果的准确性和相关性，并导致无效的渔业管理。自1972年以来，大西洋鳕（Gadus morhua）在美国水域以两个单位进行管理：缅因湾和乔治银行的存货，这两个都在重建方面遇到了困难。对可用生物信息进行了跨学科审查，以调查美国水域中的鳕鱼种群结构，并评估当前两种群模型的生物学适用性。我们的评论表明，大南部海峡，南塔基特浅滩，新英格兰南部和中大西洋的产卵组成部分与缅因湾的产卵组成部分相比，与目前管理它们的东部乔治银行更紧密相关。因此，建议修改当前种群边界以提供生物种群结构的更准确表示。拟议的替代方案将近岸和近岸产卵组件划分为单独的管理部门，从而纵向分离当前的乔治银行股票。需要进行持续的研究，包括种群组成分析，以评估不确定性，描述生物种群并发展考虑种群内多样性（例如在空间上重叠的冬季和春季产卵部分）的可持续管理方法。

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  • 来源
    《ICES Journal of Marine Science》 |2014年第6期|1490-1506|共17页
  • 作者

    Douglas R. Zemeckis; David Martins; Lisa A. Kerr; Steven X. Cadrin;

  • 作者单位

    School for Marine Science and Technology, University of Massachusetts - Dartmouth, 200 Mill Road, Suite 325, Fairhaven, MA 02719, USA;

    School for Marine Science and Technology, University of Massachusetts - Dartmouth, 200 Mill Road, Suite 325, Fairhaven, MA 02719, USA ,Massachusetts Division of Marine Fisheries, Quest Campus, 1213 Purchase Street, 3rd Floor, New Bedford, MA 02740, USA;

    School for Marine Science and Technology, University of Massachusetts - Dartmouth, 200 Mill Road, Suite 325, Fairhaven, MA 02719, USA ,Gulf of Maine Research Institute, 350 Commercial Street, Portland, ME 04101, USA;

    School for Marine Science and Technology, University of Massachusetts - Dartmouth, 200 Mill Road, Suite 325, Fairhaven, MA 02719, USA;

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  • 正文语种 eng
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  • 关键词

    Atlantic cod; fishery management; Georges Bank; Gulf of Maine; stock identification;

    机译：大西洋鳕鱼;渔业管理;乔治银行缅因湾;库存识别;

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