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首页> 外文期刊>Fisheries Research >Reproductive biology of the slipper lobster Scyllarus arctus in Galicia (NW Spain): Implications for fisheries management
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Reproductive biology of the slipper lobster Scyllarus arctus in Galicia (NW Spain): Implications for fisheries management

机译：加利西亚拖鞋龙虾氏菌氏菌（NW Spain）的生殖生物学：对渔业管理的影响

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摘要

This work addresses the study of a population of the slipper lobster S. arctus in the Galician coast (NE Atlantic), where a decrease in the exploited stock has been observed in the last decades, as has occurred in other populations of this species throughout its geographical distribution range. In spite of this fact and of its high commercial value, the management of its fishery relies on poor knowledge of relevant biological aspects such as its reproductive biology. For this purpose, monthly sampling has been carried out between February 2008 and June 2009 to characterize the reproductive cycle, breeding cycle, and sexual maturity size of S. arctus in the study area. The obtained results are particularly interesting to attempt to improve fishery management. On one hand, the current regional minimum landing size (90 mm total length; 30 mm cephalothorax length, CL) has been demonstrated to allow newly sexually mature individuals-regardless of which sexual maturity criterion is applied (females: 16.3-25.7 mm CL; males: 16.3-25.8 mm CL)-to reproduce at least once. On the other hand, the long breeding cycle observed in the area, with presence of ovigerous females throughout the whole year except for October and with values over 50% for 7 months a year (between February-August), along with the prohibition to catch ovigerous females, makes the fishery highly biased towards males, and the reproductive potential of the stock could therefore be affected.
机译：这项工作解决了在加利西亚海岸（NE Atlantic）的拖鞋龙虾S. Arctus的人口的研究，其中在过去几十年中已经观察到被剥削的股票减少，因为在整个物种的其他人群中发生了地理分布范围。尽管这一事实和其高商业价值，但其渔业的管理依赖于对其生殖生物相关的相关生物方面的知识差。为此目的，2008年2月至2009年6月在2009年2月之间进行了每月抽样，以表征研究区域的生殖周期，繁殖循环和性成熟程度。所获得的结果特别有趣，以改善渔业管理。一方面，目前区域最小降落大小（总长度为90毫米; 30mm头骨胸部长度，Cl），以允许新性成熟的个体 - 无论应用哪种性成熟度标准（女性：16.3-25.7 mm cl;男性：16.3-25.8 mm cl） - 重现一次。另一方面，在该地区观察到的长期繁殖循环，在整个一年内，除了10月份和7个月（2月至8月）之外的价值超过50％以上（2月至8月），以及禁止捕获的价值超过50％绵羊的女性，使渔业高度偏向于男性，因此股票的生殖潜力可能会受到影响。

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