Gerasev P I
Parazitologiia. 1998 Nov-Dec;32(6):544-52.
The muscle fascicles of the haptor in Tetraonchus monenteron have been described. The muscle connection of the fan-shaped dorsal bars with dorsal anchors is shown. When these muscle fascicles are contracted the dorsal anchors works as pincers. The division of tetraonchids into two genera based on types of copulatory organs, morphology of bars and haptor ans associations with different groups of fishes is restored. Different authors based on ciliated cells and chaetotaxy of the oncomiracidium and comparative spermiogenetic of T. monenteron include the tetraonchids with 16 marginal hooks into the order Dactylogyroidea. In the same time, based on the analysis of the onthogenesis of the dactylogyrid's haptor they postulate, that the haptor of these worms originally had 2 pairs of anchors and only 14 marginal hooks. The present paper contains data indicating that different representatives of the Dactylogyridea have 14-18 marginal hooks. Author put forward a suggestion, that some group of dactylogyrids originally did not have the anchors.
已对单肠四钩虫的吸附器肌束进行了描述。展示了扇形背杆与背锚的肌肉连接。当这些肌束收缩时,背锚起到钳子的作用。基于交配器官类型、杆的形态以及吸附器与不同鱼类群体的关联,四钩虫科分为两个属的分类得以恢复。不同作者根据纤毛细胞、钩介幼虫的刚毛排列以及单肠四钩虫的精子发生比较,将具有16个边缘小钩的四钩虫归入指环虫目。同时,基于对指环虫吸附器个体发育的分析,他们推测这些蠕虫的吸附器最初有2对锚和仅14个边缘小钩。本文包含的数据表明,指环虫目的不同代表有14 - 18个边缘小钩。作者提出一个建议,即某些指环虫类群最初没有锚。