中国水产科学Issue(5)：1050-1056,7.DOI:10.3724/SP.J.1118.2013.01050
浙江南部近岸海域春季蟹类群落结构特征
Analysis of crab community characteristics in South Zhejiang coastal areas during spring
摘要
Abstract
Based on three bottom trawl surveys carried out in spring (April, May, and June), 2011, crab species composition, weight density and individual density distribution, dominant species, and community characteristics were analyzed by analysis of variance, linear regression, cluster analysis, and non-metric multidimensional scaling. Thirteen crab species, belonging to 7 families of 4 orders in 1 class were sampled. Of these, four were eurythermal and eurysaline, four were hyperthermal and eurysaline, two were hyperthermal and hysaline, and three species were of uncertain ecotypes. Weight density differed significantly between April and June (P<0.05), as did the number abundance density indices. The Shannon-Wiener diversity index (H′) differed significantly between May and June and between April and June. The Margalef richness index (D) and sea water depth and bottom water sa-linity were positively correlated (P<0.05). Weight density and the H′ and pielou evenness index (J′) were nega-tively correlated (P<0.05). During spring in the study area, the non-economic mid-minitype crab species occupied the dominant position;its community structure was simpler. D increased with increase in sea water depth and bot-tom water salinity, and the weight density decreased with increasing H′and J′. In addition, Charybdis bimaculata was the most dominant species in spring, and its contribution of weight and number density in all three months was>50%, this can be used as a basis for identifying the ecotype function zone and important fisheries waters.关键词
浙江/南部近海/蟹类/春季/物种多样性/群落结构Key words
coastal area/South Zhejiang/crabs/spring/species diversity/community structure分类
农业科技引用本文复制引用
张洪亮,张龙,陈峰,周永东..浙江南部近岸海域春季蟹类群落结构特征[J].中国水产科学,2013,(5):1050-1056,7.基金项目
国家科技支撑计划项目(2007BAD43B01,2007BAD43B02) （2007BAD43B01,2007BAD43B02）
浙江省海洋与渔业项目(浙海渔计[2010]205号) （浙海渔计[2010]205号）
浙江省科技计划项目(2011F10001,2011F20031,2012F30015) （2011F10001,2011F20031,2012F30015）
