{"title":"Seasonal migration of a male Jasus lalandii sub-population","authors":"","doi":"10.1016/j.fishres.2024.107201","DOIUrl":null,"url":null,"abstract":"<div><div>Seasonal movement patterns of a sub-population of the West Coast rock lobster (WCRL), <em>Jasus lalandii</em>, in a fisheries-relevant area of South Africa were investigated from 2010 to 2018 by abundance and tag/recapture surveys. A small sub-population (3144 out of 152 914 WCRL analysed) of large male WCRL (carapace length ≥ 75 mm) gathered in a deep (± 200 m) commercial fishing area in January – May, whereas they are rare or absent in the periods between. This distribution was consistent with tagging information from 502 recaptured WCRL (from 15 211 tagged) which revealed an inshore movement (mainly in a NE direction) of a male sub-population (carapace length ≥ 75 mm = legal size) starting in austral autumn. The mean straight-line movement was 30.4 ± 0.6 km (maximum 75 km) and a mean time at large of 301 ± 15 days (maximum 3000 days) were recorded. The study revealed therefore the destination of the lobsters’ migration but not its origin.</div></div>","PeriodicalId":50443,"journal":{"name":"Fisheries Research","volume":null,"pages":null},"PeriodicalIF":2.2000,"publicationDate":"2024-10-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Fisheries Research","FirstCategoryId":"97","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0165783624002650","RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"FISHERIES","Score":null,"Total":0}
引用次数: 0
Abstract
Seasonal movement patterns of a sub-population of the West Coast rock lobster (WCRL), Jasus lalandii, in a fisheries-relevant area of South Africa were investigated from 2010 to 2018 by abundance and tag/recapture surveys. A small sub-population (3144 out of 152 914 WCRL analysed) of large male WCRL (carapace length ≥ 75 mm) gathered in a deep (± 200 m) commercial fishing area in January – May, whereas they are rare or absent in the periods between. This distribution was consistent with tagging information from 502 recaptured WCRL (from 15 211 tagged) which revealed an inshore movement (mainly in a NE direction) of a male sub-population (carapace length ≥ 75 mm = legal size) starting in austral autumn. The mean straight-line movement was 30.4 ± 0.6 km (maximum 75 km) and a mean time at large of 301 ± 15 days (maximum 3000 days) were recorded. The study revealed therefore the destination of the lobsters’ migration but not its origin.
期刊介绍：
This journal provides an international forum for the publication of papers in the areas of fisheries science, fishing technology, fisheries management and relevant socio-economics. The scope covers fisheries in salt, brackish and freshwater systems, and all aspects of associated ecology, environmental aspects of fisheries, and economics. Both theoretical and practical papers are acceptable, including laboratory and field experimental studies relevant to fisheries. Papers on the conservation of exploitable living resources are welcome. Review and Viewpoint articles are also published. As the specified areas inevitably impinge on and interrelate with each other, the approach of the journal is multidisciplinary, and authors are encouraged to emphasise the relevance of their own work to that of other disciplines. The journal is intended for fisheries scientists, biological oceanographers, gear technologists, economists, managers, administrators, policy makers and legislators.
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