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首页> 外文期刊>Journal of Northwest Atlantic Fishery Science >Dispersion of Eggs, Larvae and Pelagic Juveniles of White Hake (Urophycis tenuis) in Relation to Ocean Currents of the Grand Bank: A Modelling Approach
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Dispersion of Eggs, Larvae and Pelagic Juveniles of White Hake (Urophycis tenuis) in Relation to Ocean Currents of the Grand Bank: A Modelling Approach

机译：白鳕鱼（Urophycis tenuis）的卵，幼虫和浮游幼虫的扩散与大洋流的关系：一种建模方法

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摘要

White hake (Urophycis tenuis) is a temperate demersal fish species distributed in the northwest Atlantic. On the Grand Bank, it is concentrated mainly to the southwest where water temperatures are warmest. Survey data indicate that mature adult females aggregate on the southwest (SW) Grand Bank slope in spring and first-year juveniles settle on the southern, shallow Grand Bank in autumn. Dispersion patterns and survival potential of eggs, larvae and juveniles were investigated with respect to the effects of location (horizontal and vertical) and timing (monthly) of spawning under monthly-mean circulation fields, M2 tidal currents and associated turbulent mixing computed from a three-dimensional regional ocean circulation model. The results indicate that releases below the surface Ekman layer and in late spring have the highest chances for juveniles to settle in the southern Grand Bank nursery area in autumn. On an interannual scale, the strong recruitment of the 1999 year-class has been used as an example to examine the potential linkage between recruitment and the strength of the Labrador Current. A weak along-slope current and strong on-bank flow contributed to the strong recruitment of the 1999 year-class
机译：白鳕鱼（Urophycis tenuis）是分布在西北大西洋的温带鱼类。在大银行，它主要集中在西南部，那里的水温最高。调查数据表明，春季成年女性聚集在西南（SW）大银行坡地上，而一年级青少年则在秋季定居在南部浅滩大银行中。根据月均循环场，M2潮流和相关的湍流混合计算了卵，幼虫和幼虫在产卵位置（水平和垂直）和授时时间（每月）的影响，研究了卵，幼虫和幼虫的扩散模式和存活潜力。维区域海洋环流模型。结果表明，Ekman表层以下和春末的释放最有可能使幼虫在秋天进入南部大银行苗圃地区。在一年一度的规模上，以1999年级的强大招聘为例，考察了招聘与拉布拉多潮流之间的潜在联系。较弱的坡向水流和强劲的银行流动促成了1999年级的强劲招聘

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