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首页> 外文期刊>Journal of Northwest Atlantic Fishery Science >Migration from Nursery to Spawning Area in Relation to Growth and Maturation of Greenland halibut (Reinhardtius hippoglossoides) in the Northeast Arctic
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Migration from Nursery to Spawning Area in Relation to Growth and Maturation of Greenland halibut (Reinhardtius hippoglossoides) in the Northeast Arctic

机译：与东北北极格陵兰大比目鱼（Reinhardtius hippoglossoides）的生长和成熟有关的从苗圃到产卵区的迁移

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摘要

The population structure of the concentrations of Greenland halibut (Reinhardtius hippoglossoides (Walbaum, 1792)) in relation to distribution area and state of maturity is described based on 12 trawl surveys conducted in the spawning, nursery and feeding areas along the Norwegian Continental Slope between October 1996 and January 1999. Based on these, inferences are made of how the migration from nursery to spawning area depends on individual characteristics, such as sex, maturity stage and previous growth history, and how emigration from nursery is linked to immigration to the spawning area. Descriptions are also given of the age and length structure of the different maturity groups in the spawning area. It was inferred that for both males and females, the fast growing individuals left the nursery first, and there was no obvious sex-difference in emigration rate from the nursery area. The early maturing females that are found along with those close to spawning have low growth rates and are thus not representative of all the next year's spawners, as previously suggested. Before spawning stock biomass can be realistically modelled, similar studies should also be made on the vertical component of migration and all the migration processes should be quantified
机译：根据十月份之间在挪威大陆坡产卵区，苗圃区和饲养区进行的12次拖网调查，描述了格陵兰大比目鱼（Reinhardtius hippoglossoides（Walbaum，1792））浓度与分布区域和成熟状态有关的种群结构。 1996年和1999年1月。在此基础上，推断出从苗圃到产卵区的迁移如何取决于个体特征（例如性别，成熟阶段和以前的生长史），以及从苗圃的迁移与移民到产卵区的联系如何。还给出了产卵区不同成熟度组的年龄和长度结构的描述。可以推断，对于男性和女性，快速成长的个体首先离开苗圃，并且从苗圃区移出的移民率没有明显的性别差异。如先前所建议的那样，发现的早熟雌性和接近产卵的雌性具有低生长率，因此不能代表所有明年的产卵。在实际模拟产卵生物量之前，还应对迁移的垂直分量进行类似的研究，并对所有迁移过程进行量化

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