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Changes in Seasonal Spatial Distribution Patterns of Euprymna berryi and Euprymna morsei: The Current and Predictions Under Climate Change Scenarios

文献类型： 外文期刊

作者： Xu, Min 1 ; Liu, Yong 1 ; Song, Xiaojing 1 ; Yang, Linlin 1 ;

作者机构： 1.Minist Agr & Rural Affairs, Key Lab East China Sea Fishery Resources Exploitat, Shanghai 200090, Peoples R China

2.Chinese Acad Fishery Sci, East China Sea Fisheries Res Inst, Shanghai 200090, Peoples R China

关键词： ecological succession; Sepiolid; paralarvae; T-S diagram; nekton community; nursery; spawn; Yellow Sea; bobtail squid

期刊名称：BIOLOGY-BASEL （ 影响因子：3.5； 五年影响因子：4.0 ）

ISSN：

年卷期： 2025 年 14 卷 4 期

页码：

收录情况： SCI

摘要： Given their small size and low value in commercial fishing and aquaculture, little is known about the seasonal spatial distribution patterns and characteristics of the bobtail squid Euprymna berryi and Euprymna morsei in seas around China. Thus, we conducted seasonal bottom-trawling surveys in the southern Yellow and East China Seas during 2018 and 2019. Our results showed that E. berryi migrated from inshore areas (Yushan fishing grounds) during the summer and autumn to offshore areas (Wentai fishing grounds) during the winter. In contrast, E. morsei migrated from shallower water areas during the spring to deeper water areas during the winter. The highest abundance of E. berryi versus E. morsei was found in areas where temperatures were 25.29-28.02 degrees C compared with 19.54 degrees C (33.43-34.04 parts per thousand versus 34.43 parts per thousand), respectively, during the summer; 20.99-21.69 degrees C compared with 21.98-22.70 degrees C (34.07-34.50 parts per thousand versus 33.80-33.60 parts per thousand), respectively, during autumn; and 17.13-20.36 degrees C compared with 10.51-13.49 degrees C (34.23-34.46 parts per thousand versus 31.69-33.42 parts per thousand), respectively, during winter. We predict that suitable habitats for E. berryi would expand more northward under SSP585-2050, whereas those for E. morsei would shrink into more northern locations under SSP370-2100 and SSP585-2100. The SSP245-2100 and SSP585-2100 scenarios had the most negative impacts on the distributions of both species. Such insights improve our understanding of the population dynamics and habitat requirements of both species to support their population management and exploitation in response to future climate change.

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