东海带鱼和小型鱼类空间异质性及其空间关系  

Spatial heterogeneity of Trichiurus japonicus and small-scale fish in East China Sea and their spatial relationships

作　　者：张寒野[1] 林龙山[1] 

机构地区：[1]中国水产科学研究院东海水产研究所

出　　处：《应用生态学报》2005年第4期708-711,共4页Chinese Journal of Applied Ecology

基　　金：国家科技部公益性基础研究资助项目 (2 0 0 2 2 0 0 3 )

摘　　要：根据2 0 0 1年秋季东海区12 1个调查站位的调查资料,以变异函数为工具,分析带鱼和7种小型鱼类(黄鲫、棘头梅童鱼、鳄齿鱼、六丝钝尾虎鱼、发光鲷、七星底灯鱼和细条天竺鲷)的空间异质性及其空间关系.结果表明,带鱼的变异函数曲线与细条天竺鲷、六丝钝尾虎鱼和发光鲷的曲线极为相似,对不同距离的变异函数值进行相关分析,带鱼与上述3种小型鱼类均达到极显著相关水平(P <0 . 0 1) .黄鲫和棘头梅童鱼的变异函数表现出纯金块效应,而其它几种鱼都可拟合为球状或指数模型,并且都具有较强的空间自相关特性,其中细条天竺鲷、六丝钝尾虎鱼和发光鲷的变程也都接近或超过带鱼2 6 5km的变程,带鱼与这3种小型鱼类之间具有较强的空间追随关系,因此它们是带鱼的主要摄食对象.Based on the investigation at 121 positions in East China Sea in 2001 Autumn,this paper analyzed the spatial heterogeneity of hairtail (Trichiurus japonicus) and seven kinds of small-scale fish (Setipinna taty,Collichthys lucidus,Champsodon capensis,Amblychaeturichthys hexanema,Acropoma japonicum,Benthosema pterotum and Apogon lineatus),and the spatial relationships among them.The results indicated that the semivariogram curve of hairtail was very similar to those of Apogon lineatus,Amblychaeturichthys hexanema and Acropoma japonicum,with highly significant correlations (P<0.01),and the semivariograms of Setipinna taty and Collichthys lucidus appeared as pure nugget effect.The others could be described as spherical or exponential model that had high spatial autocorrelation.The ranges of Apogon lineatus,Amblychaeturichthys hexanema and Acropoma japonicum were equal to or beyond that of hairtail (265 km).Hairtail was spatially close to these three species,and thus,the latter might be the main preys of hairtail.

关 键 词：带鱼 小型鱼类 空间异质性 变异函数 

分 类 号：S917[农业科学—水产科学]