中街山列岛海域曼氏无针乌贼的生态位  

Niche of cuttlefish(Sepiella japonica)in the Zhongjieshan Islands sea area

作　　者：吴天 梁君 周永东 胡扬杰 徐开达 张亚洲 李雪珽 WU Tian;LIANG Jun;ZHOU Yongdong;HU Yangjie;XU Kaida;ZHANG Yazhou;LI Xueting(Marine and Fisheries Institute,Zhejiang Ocean University,Zhejiang Marine Fisheries Research Institute,Zhoushan 316021,China;Key Laboratory of Sustainable Utilization of Technology Research for Fishery Resource of Zhejiang Province,Scientific Observing and Experimental Station of Fishery Resources for Key Fishing Grounds,Ministry of Agriculture and Rural Affairs,Zhoushan 316021,China)

机构地区：[1]浙江海洋大学海洋与渔业研究所,浙江省海洋水产研究所,浙江舟山316021 [2]浙江省海洋渔业资源可持续利用技术研究重点实验室,农业农村部重点渔场渔业资源科学观测实验站,浙江舟山316021

出　　处：《水产学报》2024年第10期84-93,共10页Journal of Fisheries of China

基　　金：国家重点研发计划(2023YFD2401905,2020YFD0900804,2019YFD0901205);国家自然科学基金(31702346);浙江省重点研发计划项目(2019C02056)。

摘　　要：为了探究曼氏无针乌贼在生态系统中的生态位,实验根据2020—2021年中街山列岛海域春季(4月)和秋季(10月)共4个航次的渔业资源调查数据,运用生态位宽度、生态位重叠及联结系数(AC)等方法,分析了中街山列岛海域曼氏无针乌贼与主要游泳动物的生态位与种间关系。结果显示,春季主要游泳动物共21种,秋季共14种,不同季节曼氏无针乌贼的生态位宽度差异较大,春季曼氏无针乌贼属于广生态位,秋季属于中生态位。春季曼氏无针乌贼与主要游泳动物的生态位重叠程度较低,O_(ik)≥0.5的种对仅占总数的14.29%。秋季曼氏无针乌贼与主要游泳动物的生态位重叠程度较高,O_(ik)≥0.5的种对占总数的50%。AC分析显示,曼氏无针乌贼与主要游泳动物种间联结呈正联结(AC≥0)的种对所占比重较大,其中,春季21个种对中,19.05%的种对具有显著正联结。秋季14个种对中,35.71%的种对具有显著正联结。研究表明,不同生活史阶段曼氏无针乌贼的资源利用能力、环境适应能力和主要游泳动物种间联结度均有所不同。本研究基于生态位视角进一步探究曼氏无针乌贼资源衰退机制,可为曼氏无针乌贼栖息地保护和修复提供生态学基础理论依据。The niche and interspecific relationships between Sepiella japonica and major nekton in the waters of the Zhongjieshan Islands were analyzed by niche breadth,niche overlap and association coefficient(AC)to explore the niche of S.japonica in the ecosystem,according to the survey data of fishery resources in the Zhongjieshan Islands sea area of four voyages in spring(April)and autumn(October)from 2020 to 2021.The results showed that 21 major nektons in spring and 14 in autumn.The niche breadth values of S.japonica in different seasons were quite different.S.japonica belonged to a wide niche in spring and a middle niche in autumn.In spring,the niche overlap between S.japonica and major nekton was low.The species pairs with O_(ik)≥0.5 accounted for only 14.29%of the total.In autumn,the niche overlap between S.japonica and major nekton was high.The species pairs with O_(ik)≥0.5 accounted for 50%of the total.AC analysis showed that the proportion of species pairs with positive interspecific association(AC≥0)between S.japonica and major nekton species was higher,among them,19.05%of the 21 species pairs in spring had significant positive associations.A total of 14 species pairs in autumn,35.71%had significantly positive associations.Research showed that the resource utilization ability,environmental adaptability and interspecific association of major nekton species were different in different life history stages of S.japonica.Based on the niche perspective,the resource decline mechanism of S.japonica was further explored,which could provide ecological basis for the protection and restoration of S.japonica habitat.

关 键 词：曼氏无针乌贼 生态位 种间联结 生境保护 中街山列岛 

分 类 号：S932.8[农业科学—渔业资源]