多节核棘尾虫的发现及其与邻近属种的形态比较  

DISCOVERY OF Stylonychia nodulinucleata SP. NOV.(CILIOPHORA, HYPOTRICHIDA, OXYTRICHIDAE)AND THE COMPARISON OF ITS NEIGHBORINGSPECIES

作　　者：史新柏[1] 李洪超[1] 

机构地区：[1]哈尔滨师范大学生物系,150080

出　　处：《Zoological Research》1993年第1期10-14,共5页动物学研究（英文）

摘　　要：黑龙江省帽儿山镇沼泽地生存着一种在体形和皮层形态上酷似贻贝棘尾虫的腹毛类纤毛虫。其大核呈多个结节相连的索状,这与传统的棘毛虫属的特征有别。但S期大核复制带两个仍在两端出现,这一点全似棘尾虫属。又鉴于腹毛类的其它属中也有大核结节数目不同的种(Borror,1983),故单纯大核结节数目不同不应被视为属间差别,因此本文将此虫定为棘尾虫属一新种,名之为多节核棘尾虫。据此,棘尾虫属的传统鉴别特征在核形上也予以修正。A ciliate to be very image of Stylonychia mytilus in body shape and cortical morphology was found in marsh water of Morshan Town in Heilongjiang Province. Only the macronucleus of the present species is nodulated, this feature is contrary to the tradi- tional diagnosis of the genus Stylonychia. However, the feature that the replication bands are two and appear at both ends in S phase of the macronucleus is still similar to that of Stylonychia. Moreover, in view of the fact that different shaped macronucleus may exist in the same genus of other hypotrichs (Borror, 1983), the authors determined to set down it as a new species in the genus Stylonychia rather than establish new genus for it, and name it Stylonychia nodulinucleata sp. nov.. Thus the traditional diagnosis on the macronuclear shape of the genus must be revised.

关 键 词：腹毛类纤毛虫 新种 多节核棘尾虫 

分 类 号：Q959.117[生物学—动物学]