摘要
根据2011年11月(秋季)、2012年4月(春季)2个季度的浙江灰鳖洋渔场渔业资源调查数据,分析了该渔场渔业资源的种类组成、渔获率分布、优势种、多样性和资源密度等。结果表明:本次调查共有渔获物51种,其中鱼类27种,甲壳类23种,头足类1种。该渔场经济鱼类有龙头鱼,经济甲壳类有细指长臂虾、三疣梭子蟹、葛氏长臂虾、安氏白虾、口虾蛄、日本蟳、鲜明鼓虾,并能在灰鳖洋形成小规模的渔汛,大黄鱼、小黄鱼、带鱼和曼氏无针乌贼等经济种在调查渔场无渔汛。该渔场2个季度调查所出现的主要生物类群均以甲壳类为主,鱼类其次,头足类所占比例极低。多样性分析表明,春秋季污染相差不大,渔场整体生态处于中度污染水平,具体原因尚未定论,有待进一步调查研究。建议继续进行调查和监测,以了解该渔场的渔业资源后期变动情况及其影响原因。
This paper analyzed the species composition, CPUE distribution, dominant species, diversity and fishery resources density according to the two seasons＇ fishery resources investigation date in November 2011（Autumn） and April 2012（Spring） in Huibieyang fishing ground. We found 51 different species in this sur- vey, including 27 species of fishes, 23 species of crustaceans, 1 specie of cephalopod. The small-scale fishing season was formed for some economical species such as Harpodon nehereus, Palaemon tenuidactylus, Portunus trituberculatus, Palaemon gravieri, Exapalaemon annandalei, Oratosquilla oratoria, Charybdis japonica, Alpheus japonicas and was not formed for economical species such as big yellow croaker Pseudosciaena crocea, small yellow croaker Pseudosciaena polyactis, Trichiurus haurnela, Sepiella maindroni. The two seasons＇ main biolog- ical groups both were given priority to crustaceans, fish secondly, cephalopods proportion was extremely low. The biodiversity analysis revealed that the water in Huibieyang was overall moderate in pollution level, without significant difference in marine ecological quality in spring and autumn, the concrete reasons have not yet beenddtermined, remained to be fm＇ther investigation and study. It was suggested that further investigation and mr mitoring needed in order to understand the latest changes in fishery resom＇ces and its influence reasons.
出处
《浙江海洋学院学报（自然科学版）》
CAS
2012年第6期473-481,共9页
Journal of Zhejiang Ocean University(Natural Science Edition)
基金
国家自然科学基金项目(31270527)
关键词
种类组成
生物多样性
资源密度
春秋季
灰鳖洋渔场
species composition
biodiversity
resources density
Spring and Autumn
Huihieyang fishing ground
