Natal homing in a marine fish metapopulation.
Natal homing in a marine fish metapopulation.
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DOI：
10.1126/science.291.5502.297
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发表时间：
2001-01
期刊：
影响因子：
56.9
通讯作者：
S. Thorrold;C. Latkoczy;P. Swart;Cynthia M. Jones
中科院分区：
文献类型：
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作者：
S. Thorrold;C. Latkoczy;P. Swart;Cynthia M. Jones
确定海洋鱼类的出生来源具有挑战性，因为在海洋系统中进行标记-重新捕获研究很困难。我们使用耳石(耳骨)中的自然地球化学特征来确定北美东部河口产卵的弱鱼(卷尾鱼)的出生来源。产卵地点的保真度在60%到81%之间，与鸟类和滨水鱼类的出生归宿估计相当。这些数据与对弱鱼种群结构的遗传分析形成了对比。我们的研究结果强调了在渔业模型中考虑空间过程的必要性，并对沿海地区海洋保护区的设计产生了影响。
Identifying natal origins of marine fishes is challenging because of difficulties in conducting mark-recapture studies in marine systems. We used natural geochemical signatures in otoliths (ear bones) to determine natal sources in weakfish (Cynoscion regalis), an estuarine-spawning marine fish, in eastern North America. Spawning site fidelity ranged from 60 to 81%, comparable to estimates of natal homing in birds and anadromous fishes. These data were in contrast to genetic analyses of population structure in weakfish. Our findings highlight the need for consideration of spatial processes in fisheries models and have implications for the design of marine reserves in coastal regions.