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生态学杂志 ›› 2023, Vol. 42 ›› Issue (3): 685-693.doi: 10.13292/j.1000-4890.202303.027

• 研究报告 • 上一篇    下一篇

黄海南部和东海太平洋褶柔鱼适宜栖息地的季节变化及环境驱动因素

杨林林,姜亚洲,张辉,袁兴伟,刘尊雷*   

  1. (农业农村部东海渔业资源开发利用重点实验室, 中国水产科学研究院东海水产研究所, 上海 200090)
  • 出版日期:2023-03-10 发布日期:2023-03-10

Seasonal variations and environmental drivers of suitable habitats of Todarodes pacificus in southern Yellow Sea and East China Sea.

YANG Linlin, JIANG Yazhou, ZHANG Hui, YUAN Xingwei, LIU Zunlei*   

  1. (Key Laboratory of East China Sea Fishery Resources Exploitation, Ministry of Agriculture and Rural Affairs, China, East China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Shanghai 200090, China).

  • Online:2023-03-10 Published:2023-03-10

摘要: 为了解黄海南部和东海太平洋褶柔鱼(Todarodes pacificus)的适宜栖息地和环境特征,阐明适宜栖息地的季节变化及环境驱动因素,促进太平洋褶柔鱼资源的合理利用和科学管理,根据2018—2019年连续四季开展的渔业资源和生态环境定点调查数据,利用适宜性指数模型阐述了各季节太平洋褶柔鱼在黄海南部和东海适宜栖息地的时空变化,采用提升回归树模型分析了各环境因子对适宜栖息地的贡献率,结合适宜栖息地的季节变化推断了太平洋褶柔鱼的洄游路径。结果表明:太平洋褶柔鱼的最适表温为9.8~27.5 ℃,最适表盐为23.2~34.3,最适底温为8.9~20.2 ℃,最适底盐为31.6~34.7,最适水深为56~133 m,最适环境条件呈现一定的季节差异;不同季节最适栖息地的分布重心主要集中在东海中北部和黄海南部外侧,呈现南北循环过程;温度对各季节太平洋褶柔鱼适宜栖息地的贡献率最高,盐度其次,水深最低。研究表明,黄海南部和东海太平洋褶柔鱼的适宜栖息地随着季节变化发生明显转移,太平洋褶柔鱼在一年的生命周期内做南北向的索饵和产卵洄游,温度是适宜栖息地最主要的环境驱动因素。


关键词: 太平洋褶柔鱼, 栖息地, 环境特征, 黄海南部, 东海

Abstract: We analyzed the fishery resource and environmental data collected from four trawl surveys conducted in southern Yellow Sea and East China Sea during autumn 2018, winter 2019, spring 2019 and summer 2019, aiming to understand habitat suitability and environment characteristics of Todarodes pacificus in southern Yellow Sea and East China Sea, elucidate the seasonal variations and environmental drivers of suitable habitats, and promote rational utilization and scientific management of T. pacificus. The temporal and spatial variations of the suitable habitat in the southern Yellow Sea and the East China Sea in different seasons were analyzed based on habitat suitability index. The contribution rate of various environmental factors to suitable habitats was analyzed using boosted regression tree model. The migration path of T. pacificus was deduced by combining the seasonal changes of suitable habitat. The results showed that the optimal surface temperature, surface salinity, bottom temperature, bottom salinity, and water depth for T. pacificus were 9.8-27.5 ℃, 23.2-34.3, 8.9-20.2 ℃, 31.6-34.7 and 56-133 m, respectively. The environmental preference of T. pacificus displayed significant seasonal variations. The suitable habitats showed a south-north cycle throughout the year, which were mainly concentrated in middle-northern East China Sea and offshore of southern Yellow Sea. The contribution rate of water temperature to the suitable habitats was the largest, followed by salinity and depth. In conclusion, the suitable habitats of T. pacificus were different across seasons in southern Yellow Sea and East China Sea. T. pacificus migrated northward or southward into the feeding grounds and spawning grounds. Temperature was the most important environmental driver of the suitable habitats.


Key words: Todarodes pacificus, habitat, environment characteristic, southern Yellow Sea, East China Sea.