三门湾及邻近海域百陶箭虫和肥胖箭虫时空共存关系初探  

Study on relationships driving the species spatial and temporal coexistence of Sagitta bedoti and Sagitta enflata in the Sanmen bay and adjacent waters

作　　者：杨杰青 晁敏[1] 史赟荣[1] 张冬融 周进[1] YANG Jieqing;CHAO Min;SHI Yunrong;ZHANG Dongrong;ZHOU Jin(Key Laboratory of East China Sea Fishery Resources Exploitation,Ministry of Agriculture and Rural Affairs,East China Sea Fisheries Research Institute,Chinese Academy of Fishery Sciences,Shanghai 200090,China;Key Laboratory of Engineering Oceanography,Second Institute of Oceanography,Ministry of Natural Resources,Hangzhou 310012,Zhejiang,China)

机构地区：[1]中国水产科学研究院东海水产研究所农业农村部东海渔业资源开发利用重点实验室,上海200090 [2]自然资源部第二海洋研究所工程海洋学重点实验室,浙江杭州310012

出　　处：《上海海洋大学学报》2024年第2期433-443,共11页Journal of Shanghai Ocean University

基　　金：中国水产科学研究院东海渔业水域生态环境监测与修复创新团队项目(2020TD14);国家重点基础研究发展计划(2010CB429005)。

摘　　要：群落内近缘物种如何共存是群落生态学的核心研究内容之一,三门湾及邻近海域百陶箭虫和肥胖箭虫的共存格局仍未知。为阐明三门湾及邻近海域百陶箭虫和肥胖箭虫共存关系,根据三门湾及邻近海域百陶箭虫、肥胖箭虫及环境调查数据,利用广义加性模型(Generalized additive models,GAMs)分析了百陶箭虫、肥胖箭虫与环境因子之间的关系,同时利用零模型检验了百陶箭虫和肥胖箭虫之间的共存格局。结果表明:百陶箭虫分布与温度、桡足类密度和浮游植物密度显著相关,肥胖箭虫与温度、桡足类密度、水深和盐度显著相关。百陶箭虫和肥胖箭虫间四季Pianka实测值与模拟值之间的差异不显著,表明百陶箭虫和肥胖箭虫之间呈随机分布状态,竞争作用和生境过滤作用共同制约二者的分布。此外,百陶箭虫和肥胖箭虫在时间和空间上发生了生态位的分化,而食物组成是否具有差异仍需进一步研究。Study on how related species coexistence in community is a central objective in ecology.However,knowledge of coexistence pattern of Sagitta bedoti and S.enflata in the Sanmen bay and adjacent waters remains poorly known.Two species of S.bedoti and S.enflata with environmental factors were sampled,aiming to elucidate relationships that drive their coexistence,on August and November of 2019,April and December of 2020,respectively.The Generalized Additive Models(GAMs)was used to analyze the relationships between species and environmental influences.The results indicated that S.bedoti was significantly correlated with temperature,the density of copepods and the density of phytoplankton.And S.enflata was significantly correlated with temperature,the density of copepods,water depth and salinity.The null model was used to test the coexistence pattern between S.bedoti and S.enflata.It showed that the observed Pianka indexes have no significant difference with simulated values between S.bedoti and S.enflata communities.It was suggested that there was a random distribution between S.bedoti and S.enflata communities,and competition and habitat filtering effects restricted their distribution.In addition,ecological niche differentiation of S.bedoti and S.enflata happened occurred in both time and space.Whether there was difference in food composition still needs further study.

关 键 词：浮游动物 百陶箭虫 肥胖箭虫 三门湾 共存关系 

分 类 号：Q178.1[生物学—水生生物学]