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首页> 外文期刊>ICES Journal of Marine Science >Spillover of sea scallops from rotational closures in the Mid-Atlantic Bight (United States)
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Spillover of sea scallops from rotational closures in the Mid-Atlantic Bight (United States)

机译：来自大西洋中西部的旋转闭合的海扇斯跨越（美国）

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We examined evidence for larval spillover (increased recruitment outside the closures) of Atlantic sea scallops (Placopecten magellanicus) due to rotational closures in the Mid-Atlantic Bight using a 40-year fisheries survey time series and a larval transport model. Since the first closure of the Hudson Canyon South (HCS) area in 1998, mean recruitment in the two areas directly down-current from this closure, Elephant Trunk (ET) and Delmarva (DMV), increased significantly by factors of about 7 and 2, respectively. Stock-recruit plots indicate that low biomasses in HCS were associated with reduced mean recruitment in ET and DMV. Simulations indicate that larvae spawned in HCS often settle in the two downstream areas and that model-estimated settlement (based on gonad biomass in HCS and year-specific larval transport between the areas) is correlated with observed recruitment. This study gives strong evidence that the rotational closure of HCS has induced increased recruitment in down-current areas.
机译：由于使用40年的渔业调查时间序列和幼虫运输模型，我们检查了大西洋海扇贝（Placopecten Magellanicus）的幼虫溢出（封闭闭锁）的证据（Placopecten Magellanicus）的证据。自1998年首次关闭哈德森峡谷南（HCS）地区以来，平均招聘在这两个区域，直接从该闭包，大象躯干（et）和delmarva（DMV），因约7和2的因素而显着增加， 分别。库存招募地块表明HCS中的低生物量与ET和DMV的平均招生减少有关。模拟表明，HCS中衍生的幼虫通常在两个下游领域定居，并且模型估计的沉降（基于HCS中的Gonad生物量）与观察到的招聘相关。本研究提供了强有力的证据表明HCS的旋转闭合诱导在下流区域增加招聘。

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