东山湾及其邻近海域鱼类物种分类多样性  

Taxonomic diversity of fish species in Dongshan Bay,China and adjacent areas

作　　者：林龙山[1] 王燕平[2] 李渊[2] 张静[3] 高天翔[2] 

机构地区：[1]国家海洋局第三海洋研究所,福建厦门361005 [2]中国海洋大学水产学院,山东青岛266003 [3]集美大学水产学院,福建厦门361021

出　　处：《中国水产科学》2012年第6期1060-1067,共8页Journal of Fishery Sciences of China

基　　金：国家自然科学基金资助项目(41176117);国家海洋局第三海洋研究所基本科研业务费专项资金资助项目(海三科2010016);国家海洋公益性行业科研专项经费资助项目(201105012)

摘　　要：根据2009年11月至2010年8月东山湾及其邻近海域鱼类调查资料,系统分析了其鱼类物种组成,计算了该海域的分类阶元包涵指数(TINCLi)、分类多样性指数(△+和∧+)以及各物种的相对重要性指数(IRI),并对东山湾海域物种季节变化进行了探讨。结果显示,东山湾共记录鱼类114种,分属15目57科87属,以鲈形目种类占绝对优势。分类阶元包涵指数分析结果显示,东山湾及其邻近海域鱼类种类组成中,其目、科、属所分别拥有的(科、属、种)、(属、种)和(种)的平均数目分别为(3.80、5.40、7.60)、(1.42、2.00)和(1.41),均低于东海陆架区、大亚湾、东沙群岛,说明东山湾海域的鱼类多样性比其余海域高,种类组成较为分散。使用PRIMER 5.2软件计算的平均分类差异指数△+和分类差异变异指数∧+分别为65.8和129.5,其中△+均高于其余3个海域,说明东山湾海域鱼类的亲缘关系比其余3个海域要远,而且分布不均匀。相对重要性指数分析结果显示,当采用IRI>1 000标准定义优势种时,秋季的优势种有3种,冬季只有1种,春季有2种,夏季最多有4种,说明不同季节的优势鱼种存在较大变化,主要鱼种季节更替明显。本研究在种以上的分类阶元分析了东山湾及其周边海域的鱼类组成及其分布特点,为东山湾鱼类资源的可持续开发、利用和保护提供了重要的参考依据。Within this research,fish species data were collected by four bottom trawl surveys within the coastal waters of Dongshan Bay,China and adjacent areas from November 2009 to August 2010.The inclusion index at the taxonomic level（TINCLi）,taxonomic diversity（Δ＋ and Λ＋） and the index of relative importance（IRI） were calculated.The characteristics of fish community structure and seasonal variation within this sea were in addition analyzed.The results showed that 114 fish species involving 15 orders,57 families and 81 genera were identified in Dongshan Bay and adjacent areas,with Perciformes comprising the major order.Analysis by the inclusion index at the taxonomic level showed that the average numbers of（families,genera,species）,（genera,species） and（spe-cies） per order,family and genus were（3.80,5.40,7.60）,（1.42,2.00） and（1.41）,respectively.Compared to the East China Sea Continent Shelf,Daya Bay and Dongsha Islands,results for Dongshan Bay and adjacent areas were far lower and the species composition more dispersed.The values indicated that taxonomic diversity within Dongshan Bay and adjacent areas was higher than for other seas.PRIMER 5.2 was used to test the average taxo-nomic distinctness（Δ＋） and the variation in taxonomic distinctness（Λ＋） of Dongshan Bay and adjacent areas.The average taxonomic distinctness（Δ＋） was 65.8 and the variation in taxonomic distinctness（Λ＋） was 129.5.When comparing the Δ＋ with those of the other three seas,the genetic relationship of the composition of fish species in Dongshan Bay and adjacent areas was more distant than that of the other three seas,and had an uneven distribution.The results of the index analyses of relative importance showed that there were three dominant species occurring in autumn and one,two and four in winter,spring and summer,respectively,whose IRI indexes were higher than 1000.The results indicated that the dominant fish species changed according to the different seasons.The compo-sition of f

关 键 词：分类阶元包涵指数 分类多样性 相对重要性指数 东山湾 

分 类 号：S93[农业科学—渔业资源]