This is what we know: Assessing the stock status of the data-poor skipjack tuna (Katsuwonus pelamis) fishery in the South China Sea
文献类型： 外文期刊
作者： Zhang, Kui 1 ; Zhang, Jun 1 ; Zhang, Peng 1 ; Su, Li 1 ; Hong, Xiaofan 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
关键词： tuna fishery; western and central Pacific; data-poor fisheries; length-based methods; overfished
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： Skipjack tuna (Katsuwonus pelamis) is a highly migratory species of significant value in global marine fisheries. The South China Sea (SCS) is the largest marginal sea in the northwestern Pacific Ocean, and many tuna and tuna-like species occur within it. Although a recent Western and Central Pacific Fisheries Commission report identified skipjack tuna in the western and central Pacific to be sustainably fished, the exploitation status of skipjack tuna in the SCS is still unclear, due to limited data. We apply two data-poor methods, length-based Bayesian biomass estimation (LBB) and length-based spawning potential ratio (LBSPR), to assess the status of skipjack tuna stock in the SCS. We use electronic length frequency analysis to estimate von Bertalanffy growth parameters (asymptotic length L-inf and growth coefficient K) to serve as priors for LBB and LBSPR estimation. Estimates are calculated for SCS skipjack tuna L-inf (68.3 cm), K (0.325 year(-1)), natural mortality (0.49 year(-1)) and mean fork length at 50% sexual maturity (36.7 cm). LBB analysis reveals the estimated relative stock size (0.29) indicates that the SCS skipjack tuna stock maybe heavily overfished. LBSPR analysis reveals the estimated spawning potential ratio for this fishery to be 3%, which is significantly below the limit reference point of 20%. Accordingly, for the SCS skipjack tuna stock we identify a need to reduce fishing mortality by controlling fishing effort and increasing catchable size.
- 相关文献
作者其他论文 更多>>
-
Simulating Habitat Suitability Changes of Threadfin Porgy (Evynnis cardinalis) in the Northern South China Sea Using Ensemble Models Under Medium-to-Long-Term Future Climate Scenarios
作者：Zhang, Junyi;Li, Jiajun;Cai, Yancong;Zhang, Kui;Xu, Youwei;Chen, Zuozhi;Xu, Shannan;Zhang, Junyi;Li, Jiajun;Cai, Yancong;Zhang, Kui;Xu, Youwei;Chen, Zuozhi;Xu, Shannan
关键词：
Evynnis cardinalis ; ensemble model; climatic change; Biomod2; northern South China Sea -
Climate Variability and Fish Community Dynamics: Impacts of La Niña Events on the Continental Shelf of the Northern South China Sea
作者：Liu, Zikai;Li, Jiajun;Zhang, Junyi;Chen, Zuozhi;Zhang, Kui;Liu, Zikai;Zhang, Junyi;Li, Jiajun;Chen, Zuozhi;Zhang, Kui;Li, Jiajun;Chen, Zuozhi;Zhang, Kui
关键词：La Ni & ntilde;a conditions; fish community structure; species distribution models; climate change; fish diversity; South China Sea
-
Impact of Climate Change on the Habitat Distribution of Decapterus macarellus in the South China Sea
作者：Shen, Qikun;Zhang, Peng;Yu, Wenming;Cai, Yancong;Li, Jie;Chen, Zuozhi;Fan, Jiangtao;Shen, Qikun;Zhang, Peng;Yu, Wenming;Cai, Yancong;Li, Jie;Chen, Zuozhi;Fan, Jiangtao;Zhang, Peng;Chen, Zuozhi;Xiong, Pengli
关键词：SDMs;
Decapterus macarellus ; the South China Sea; climate change; environmental factors -
Variations in the fish community of the Beibu Gulf (South China Sea) following fishery resources protection measures
作者：Su, Li;Zhang, Kui;Xu, Youwei;Chen, Zuozhi;Su, Li;Zhang, Kui;Xu, Youwei;Chen, Zuozhi;Zhang, Kui;Xu, Youwei;Chen, Zuozhi
关键词：Beibu Gulf; Fish community; Mean trophic level; Diversity; Fishery resources conservation; Fishery resources policy
-
Status assessment of the Beibu Gulf coastal fishery ecosystem using a multispecies size-spectrum model
作者：Hong, Xiaofan;Zhang, Kui;Li, Jiajun;Xu, Youwei;Sun, Mingshuai;Xu, Shannan;Cai, Yancong;Qiu, Yongsong;Chen, Zuozhi;Zhang, Kui;Li, Jiajun;Xu, Youwei;Sun, Mingshuai;Xu, Shannan;Cai, Yancong;Qiu, Yongsong;Chen, Zuozhi;Zhang, Kui;Li, Jiajun;Xu, Youwei;Sun, Mingshuai;Xu, Shannan;Cai, Yancong;Qiu, Yongsong;Chen, Zuozhi
关键词：Beibu Gulf; Coastal fishery ecosystem; Multispecies size-spectrum model; Relative fishing effort; Climate anomalies
-
An extensive assessment of exploitation indicators for multispecies fisheries in the South China Sea to inform more practical and precise management in China
作者：Zhang, Kui;Su, Li;Chen, Zuozhi;Qiu, Yongsong;Zhang, Kui;Su, Li;Chen, Zuozhi;Qiu, Yongsong;Zhang, Kui;Chen, Zuozhi
关键词：Data-limited assessment models; Exploitation status; Fisheries management; Overfishing; The South China Sea; Trawl fisheries
-
Iron fertilization from Asian dust drives tertiary-level productivity of Pacific salmon
作者：Qiu, Yongsong
关键词：Iron fertilization; Asian dust; Ocean productivity; Ecosystem response; Climate mitigation; Sockeye salmon
