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 。
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 decreased gradually when two helminths co existed in the intestine of ricefield eel. The positive interspecific association of two helminths was significant and their intensity of infection was not altered when P.magnum and P.(N.) celatus co existed in the intestine of ricefield eel.
出处
《生态学报》
CAS
CSCD
北大核心
2000年第4期615-619,共5页
Acta Ecologica Sinica
基金
湖北省教委重点科研项目基金资助!(99A086)
黄冈师范学院科技发展基金资助
关键词
大型多钩槽绦虫
隐藏新棘虫
种间关系
黄鳝
蠕虫
Polyoncobothrium magnum
P.(N.) celatus.
interspecific relationship
niche overlap
