北黄海獐子岛海域强壮箭虫(Sagitta crassa)丰度的周年变化及其与环境因子的关系  

Annual variation in abundance of Saggita crassa and its relationship with environment conditions around the Zhangzi Island,Northern Yellow Sea

作　　者：尹洁慧 张光涛 李超伦[3] 王世伟 万艾勇 Yin Jiehui Zhang Guangtao Li Chaolun Wang Shiwei Wan Aiyong(Ocean College, Yantai University, Yantai 264005, China ]iaozhou Bay Ecosystem Research Station, （~＇ngdao 266071, Chi- na Key Laboratory of Marine Ecology and Environmental Sciences, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China)

机构地区：[1]烟台大学海洋学院,山东烟台264005 [2]山东胶州湾海洋生态系统国家野外科学观测研究站,山东青岛266071 [3]中国科学院海洋研究所海洋生态与环境科学重点实验室,山东青岛266071

出　　处：《海洋学报》2016年第12期86-94,共9页

基　　金：国家自然科学青年基金(41506153);中科院海洋所海洋生态与环境科学实验室开放基金项目

摘　　要：强壮箭虫是我国温带海域的浮游动物优势种。本文通过2009年7月至2010年6月在北黄海獐子岛海域的逐月综合调查,研究了大网浮游动物中强壮箭虫丰度的周年变化及其与环境因子的关系。结果显示,强壮箭虫年平均丰度为22.6ind/m3,高峰值出现在12月(47.5ind/m3),最低值出现在8月(7.8ind/m3);在水平分布上,除了夏季的8月,全年近岸海域强壮箭虫丰度均高于外海海域,且在10月及次年2月差异显著(P<0.05)。相关性分析显示,作为肉食性浮游动物,强壮箭虫丰度时空变化除了受温度和盐度影响外,还与饵料生物(主要是桡足类)丰度有关。我们认为,这是其丰度周年变化规律在不同海域出现明显差异的主要原因。Saggita crassa is one of the most important dominant zooplankton species in temperate China seas.Based on samples collected during monthly investigation （July 2009 to June 2010）around the Zhanagzi Island,we dem-onstrated annual variation of abundance and its correlation with environmental conditions.In our study,its abun-dance averaged in 22.6 ind/m3 on annual cycle,with monthly maximum in December （47.5 ind/m3 ）and minimum （7.8 ind/m3 ）in August.Spatially,the abundance was higher at stations near the island comparing to those in open waters in all months but August.The difference was statistically significant in October and February （P 〈0.05）.As a carnivore,temporal and spatial distribution of S.crassa was influenced by not only water temperature and salinity but also that of prey populations （mainly copepods）.Thus,we propose that different annual patterns of S.crassa over various geographical regions were impacted by that of prey communities.

关 键 词：强壮箭虫 丰度 分布 环境因子 獐子岛 

分 类 号：Q958.8[生物学—动物学]