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首页> 外文期刊>ICES Journal of Marine Science >Seasonal movements and connectivity of an Atlantic cod (Gadus morhua) spawning component in the western Gulf of Maine
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Seasonal movements and connectivity of an Atlantic cod (Gadus morhua) spawning component in the western Gulf of Maine

机译：缅因湾西部大西洋鳕鱼（Gadus morhua）产卵部分的季节性运动和连通性

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摘要

Movement patterns of marine fishes can have considerable impacts on their population dynamics. A thorough understanding of fish movements is therefore required for informing stock identification, stock assessment, and fishery management. This study investigated the seasonal movements and connectivity of a spring-spawning component of Atlantic cod (Gadus morhua) in the western Gulf of Maine. From 2010 through 2013, spawning cod were sampled within an inshore spawning closure and tagged with conventional tags (n = 2368), acoustic transmitters (n = 106), and archival data storage tags (n = 266). Acoustic receivers were deployed on three inshore spawning sites to test for connectivity among sites. Data from archival tags were used to describe seasonal habitat occupancy and movement patterns via geolocation to statistical areas. Tagging data indicated that cod were primarily residential in the western Gulf of Maine, moving inshore to spawn during the spring (April-July), followed by an offshore migration to their feeding grounds for summer and fall. Cod generally inhabited waters from 45 to 175 m, with the deep offshore basins (> 150 m) serving as overwintering habitat. Occupied water temperatures ranged from 4.0 to 13.3 degrees C, with the coldest temperatures experienced from March through July and the warmest temperatures experienced from September through January. Results provided evidence of spawning site fidelity and connectivity among spawning sites, with some fish visiting multiple spawning sites within or between years. The movements observed during and after the spring-spawning season serve as important mechanisms influencing metapopulation dynamics in the Gulf of Maine region, including both fine-and broad-scale population structure. The improved understanding of cod movement patterns will assist fishery managers in developing management plans, including spawning protection measures, and help to address remaining uncertainties with respect to cod population structure in the Gulf of Maine and other regions.
机译：海水鱼类的活动方式可能对其种群动态产生重大影响。因此，需要对鱼类的运动有透彻的了解，以告知种群识别，种群评估和渔业管理。这项研究调查了缅因湾西部大西洋鳕（Gadus morhua）的春季产卵部分的季节性运动和连通性。从2010年到2013年，对产卵鳕鱼在近海产卵封闭区内进行采样，并用常规标签（n = 2368），声发射器（n = 106）和档案数据存储标签（n = 266）进行标签。在三个近岸产卵场部署了声波接收器，以测试站点之间的连通性。来自存档标签的数据用于通过地理分布到统计区域来描述季节性栖息地的占用和移动方式。标记数据表明，鳕鱼主要居住在缅因州西部，在春季（4月至7月）移至近岸产卵，然后在夏季和秋季进行近海迁移到其觅食地。鳕鱼通常居住在45至175 m的水域中，深海盆地（> 150 m）是越冬的栖息地。占用的水温范围为4.0到13.3摄氏度，3月至7月为最冷的温度，9月至1月为最暖的温度。结果提供了产卵地点保真度和产卵地点之间的连通性的证据，一些鱼类在数年之内或之间访问了多个产卵地点。在春季产卵季节期间和之后观察到的运动是影响缅因州海湾地区的种群动态的重要机制，包括精细和大规模的人口结构。对鳕鱼移动方式的进一步了解将有助于渔业管理人员制定包括产卵保护措施在内的管理计划，并有助于解决缅因湾和其他地区鳕鱼种群结构方面仍然存在的不确定性。

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  • 来源
    《ICES Journal of Marine Science》 |2017年第6期|1780-1796|共17页
  • 作者

    Zemeckis Douglas R.; Liu Chang; Cowles Geoffrey W.; Dean Micah J.; Hoffman William S.; Martins David; Cadrin Steven X.;

  • 作者单位

    Univ Massachusetts Dartmouth, Sch Marine Sci & Technol, 706 South Rodney French Blvd, New Bedford, MA 02744 USA|Rutgers State Univ, Dept Marine & Coastal Sci, 71 Dudley Rd, New Brunswick, NJ 08901 USA;

    Univ Massachusetts Dartmouth, Sch Marine Sci & Technol, 706 South Rodney French Blvd, New Bedford, MA 02744 USA;

    Univ Massachusetts Dartmouth, Sch Marine Sci & Technol, 706 South Rodney French Blvd, New Bedford, MA 02744 USA;

    Massachusetts Div Marine Fisheries, Annisquam River Marine Fisheries Field Stn, 30 Emerson Ave, Gloucester, MA 01930 USA;

    Massachusetts Div Marine Fisheries, Annisquam River Marine Fisheries Field Stn, 30 Emerson Ave, Gloucester, MA 01930 USA;

    Univ Massachusetts Dartmouth, Sch Marine Sci & Technol, 706 South Rodney French Blvd, New Bedford, MA 02744 USA|Massachusetts Div Marine Fisheries, Quest Campus,1213 Purchase St,3rd Floor, New Bedford, MA 02740 USA;

    Univ Massachusetts Dartmouth, Sch Marine Sci & Technol, 706 South Rodney French Blvd, New Bedford, MA 02744 USA;

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  • 正文语种 eng
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  • 关键词

    acoustic telemetry; Atlantic cod; data storage tags; Gadus morhua; geolocation; metapopulation; population connectivity;

    机译：声学遥测;大西洋鳕鱼;数据存储标签;Gadus morhua;地理位置;中间种群;种群连通性;

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