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首页> 外文期刊>ICES Journal of Marine Science >Identifying juvenile and sub-adult movements to inform recovery strategies for a high value fishery-European bass (Dicentrarchus labrax)
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Identifying juvenile and sub-adult movements to inform recovery strategies for a high value fishery-European bass (Dicentrarchus labrax)

机译：识别少年和次成人动作，为高价值渔业 - 欧洲低音（Dicentrarchus Labrax）提供恢复策略

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摘要

Y The European bass (Dicentrarchus labrax) support high value commercial and recreational fisheries, however the Spawning Stock Biomass (SSB) of the northern Atlantic stock (ICES divisions 4.bc, 7.a, and 7.dh) has rapidly declined to an unsustainable level. The decline in SSB has been attributed to high fishing pressure combined with poor recruitment. By tracking juvenile fish their spatial ecology can be identified, and appropriate fisheries management policies designed to boost recruitment can be implemented. Using acoustic telemetry 146 sub-adult European bass (25.260 cm fork length) were tracked for up to 370 d across three sites in the southwest of the UK. Tagged fish were detected 2 724 548 times (Range: 166106 393 detections per fish). Linear modelling estimated tagged fish were resident within 2.420.1 km of the site where they were first caught for 42.975.5% of the year. Some fish were however resident throughout summer and winter. Individual fish were also tracked moving up to 317 km to other coastal sites, 81% of which returned to their original capture site. Fisheries management should account for the high site fidelity displayed by juveniles and sub-adults of this species and coastal nursery sites should be considered essential habitat.
机译：y欧洲低音（Dicentrarchus Labrax）支持高价值的商业和娱乐渔业，然而北大西洋股票的产卵股（SSB）（ICES部门4.bc，7.a和7.dh）迅速下降到不可持续的水平。 SSB的下降归因于高钓鱼压力与贫困令人难度的兴奋。通过跟踪少年鱼可以确定其空间生态学，可以实施适当的渔业管理政策，旨在提升招聘。使用声学遥测，146次成人欧洲低音（25.260厘米叉长）在英国西南部的三个地点追踪高达370天。被标记的鱼被检测到2 724 548次（范围：166106 393检测到每种鱼）。线性建模估计的标记鱼在本地的2.420.1公里范围内居住，他们首先被占据了今年的42.975.5％。然而，有些鱼在夏天和冬天居住。还追踪单个鱼达到其他沿海网站，其中81％返回其原始捕获网站。渔业管理应考虑少年和沿海托儿所的少年和亚洲成年人展示的高地忠诚应该被视为必要的栖息地。

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