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作 者 ：方建平

期 刊 ：生态学报 2000年 20卷 4期 页码：615~619

关键词：大型多钩槽绦虫；隐藏新棘虫；种间关系；生态位重叠；

Keywords:Polyoncobothrium magnum, P.（N.） celatus., interspecific relationship, niche overlap,

摘 要 ：大型多钩槽绦虫和隐藏新棘虫单独在黄鳝肠道内分布时 ,其分布位置十分相似 ,相似性系数 r=0 .92 2 6( p<0 .0 1 )。当两种寄生蠕虫在黄鳝中共同感染时 ,随着大型多钩槽绦虫的生长 ,其分布位置明显前移而隐藏新棘虫的分布位置则显著后退 ,生态位重叠明显下降。两种寄生蠕虫种间正关联显著 ,它们在宿主肠道内共存并不改变它们的感染强度。

Abstract:Interspecific relationship between P.magnum and P.(N.) celatus in the intestine of ricefield eel were studied on the site occurring alone and together.The distribution of each species in the gut of hosts was extremely similar when the two helminths occurred alone,similarity coefficient is r =0.9226( P <0 01).With P.magnum growing,the distribution of P.magnum moved ahead and the distribution of P.(N.) celatus moved backwards significantly and the niche overlap of two parasites decre...

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