Impacts of climate events on life history parameters of major commercial fishes in the Beibu Gulf, South China Sea in the last 15 years
文献类型： 外文期刊
作者： Hong, Xiaofan 1 ; Zhang, Kui 1 ; Li, Jiajun 1 ; Xu, Youwei 1 ; Sun, Mingshuai 1 ; Jiang, Jingyuan 4 ; Xu, Shannan 1 ; Cai, Yancong 1 ; Qiu, Yongsong 1 ; Chen, Zuozhi 1 ;
作者机构： 1.Chinese Acad Fishery Sci, South China Sea Fisheries Res Inst, Guangzhou, Peoples R China
2.Minist Agr & Rural Affairs, Key Lab Sustainable Utilizat Open Sea Fishery, Guangzhou, Peoples R China
3.Shanghai Ocean Univ, Coll Marine Sci, Shanghai, Peoples R China
4.Guangdong Prov Acad Environm Sci, Guangzhou, Peoples R China
关键词： Beibu Gulf; major commercial fishes; ELEFAN; life-history trait parameters; El Nino-Southern Oscillation
期刊名称：FRONTIERS IN MARINE SCIENCE （ 影响因子：3.7； 五年影响因子：4.7 ）
ISSN：
年卷期： 2023 年 10 卷
页码：
收录情况： SCI
摘要： A detailed understanding of the impact of climate variability on fish life histories provides a fundamental basis for the ecosystem approach to fisheries management. In this study, we evaluated the relationship between fish life-history trait parameters and climate periods, using survey data from 2006-2020 for the Beibu Gulf of the northwestern South China Sea, a fishing ground with high commercial and ecological value. We show that climate events can significantly alter the structure of the life history for major commercial fishes, with more diverse life-history strategies during warm events and more concentrated mortality during cold events. Additionally, we detected special relationships between climate events and the life-history trait composite index (LTCI) in Psenopsis anomala and Trichiurus lepturus. It is possible that other indicators would be more appropriate than variability in Oceanic Nino Index (ONI), such as variation in fishing effort or the environmental resistance of fish. Anthropogenic disturbance and biological features may also help explain the magnitude of population variability. We found that changes in life-history traits of only a few commercial fishes (Decapterus maruadsi, Pennahia macrocephalus, and Upeneus sulphureus) were related to the shift in climate periods; these fishes were generally characterized by faster growth and higher mortality rates in the normal and El Nino periods, with the opposite trends in La Nina periods. However, the emergence of climate events has led to a clear complementarity of life-history strategies among some fish in the same ecological niche (same genus and/or feeding group), which may be explained by a balance between habitat conditions and fishing pressures. This study of fish life-history strategies under climate anomalies provides key insights into important attributes for managers to consider when implementing relevant measures to promote fisheries sustainability in the subtropical bay.
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