福建沿岸海域蟹类种类组成和数量分布-《集美大学学报（自然科学版）》

文章信息/Info

Title:: Species Composition and Spatial Distribution of Crabs in Fujian Coastal Waters

作者:: 刘秋狄1; 2; 陈政强1; 2; 黄良敏1; 2; 张雅芝1; 2; (1.集美大学水产学院,福建厦门 361021;2.福建省高校水产科学技术与食品安全重点实验室,福建厦门 361021)

Author(s):: LIU Qiu-di1; 2CHEN Zheng-qiang1; 2HUANG Liang-min1; 2ZHANG Ya-zhi1; 2; (1.Fisheries College,Jimei University,Xiamen 361021,China;2.Key Laboratory of Science and Technology forAquaculture and Food Safety(Jimei University),Fujian Province,Xiamen 361021,China)

Keywords:: Fujian coastal waters; crab; species composition; quantitative distribution

摘要:: 根据2006年8月和2007年1月、4月、10月福建沿岸海域底拖网调查结果，对福建沿岸海域蟹类的种类组成、数量分布及时空变化做了定量分析.结果表明：在福建沿岸海域调查海区中蟹类有43种，隶属10科、21属，其中以梭子蟹科种类最多.蟹类优势种的时空分布差异明显，春季有2种优势种，夏季有3种，秋季有5种，冬季有2种；双斑全年均为优势种.调查海区平均生物量以夏季最高，达2 557.74 g/h；春季最低，仅为740.96 g/h.蟹类平均密度以夏季最高，达1 226 ind/h；春季最低，仅为2 ind/h；闽东北沿岸蟹类生物量和密度水平均较高.具有开发利用价值的经济种类有三疣梭子蟹、日本、锈斑和红星梭子蟹等，其渔获量占蟹类总量的68.4 %

Abstract:: Based on the investigation of bottom trawl during the period of August 2006 and January,April,October of 2007 in coastal waters of Fujian Province,the species composition, quantitative and temporal-spatial distribution of crabs were analyzed.The result showed that 43 species of crabs from 10 families 21 genus were assured,most of which were Portunidae.In this area,the crabs were distributed all around the year,but temporal-spatial distribution of dominant species were obviously different,which had two in spring, three in summer,five in autumn and two in winter,only Charybdis bimaculata was dominant species in all year.The average biomass was 2 557.74 ind/h in summer and 740.96 g/h in spring,which were the highest and lowest season in a year.The average density of crabs was 1 226 ind/h in summer and 2 ind/h in spring,which were still the highest and lowest season in a year.Biomass and density of crabs was higher in coastal waters of northeast Fujian Province.The economic species of crabs were Portunus trituberculatus, Portunus sanguinolentus,Charybdis feriatus,Charybdis japonica,which amounted to 68.4 % of crabs