LIGHT AND ELECTRON-MICROSCOPIC OBSERVATIONS ON THE STOMATOGENESIS OF THE CILIATE COLEPS-AMPHACANTHUS EHRENBERG, 1833
LIGHT AND ELECTRON-MICROSCOPIC OBSERVATIONS ON THE STOMATOGENESIS OF THE CILIATE COLEPS-AMPHACANTHUS EHRENBERG, 1833
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DOI：
10.1111/j.1550-7408.1987.tb03158.x
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发表时间：
1987-05-01
期刊：
影响因子：
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通讯作者：
BARDELE, CF
中科院分区：
文献类型：
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作者：
HUTTENLAUCH, I;BARDELE, CF
光镜和电镜观察表明，双棘叶蝉（Coleps amphacanthus Escherberg，1833）的口部纤毛系统发育良好，由19-23个口旁双动子和3个口旁细胞器组成。这些结构以前被称为“环口纤毛”和“背侧肌”，人们认为它们起源于所有22-26体细胞动力学的远端。与此相反，只有四个气孔发生动力学（K1，Kn，Kn-1，和Kn-2）参与后叶的气孔发生。所有口旁双动体都起源于口旁右侧的一个单个动体片段（KF 1），而口旁细胞器则起源于左侧的三个动体片段（KFn、KFn-1和KFn-2）。特别是，未来的paroral dikinetids执行一个复杂的形态发生运动，导致的情况下，每一个口腔dinetid的后动体的纤毛后微管引起的cytopharyngeal微管带。纤毛后起源的cytopharyngeal带，只能检测到的EM研究的气孔表明，篮子的Coleps属于的rabutos型，而不是横纹肌型篮子，横向微管伴随篮子形成的线虫连丝。这些意见，这可能会导致修订属的系统位置的分类学意义，进行了讨论。
Light and electron microscopical observations on the stomatogenesis of Coleps amphacanthus Ehrenberg, 1833, show that this "gymno"-stome ciliate has a well developed oral ciliature made of 19-23 "paroral dikinetids" and three "adoral organelles." These structures were previously known as "circumoral ciliature" and "dorsal brosse," and it was thought that they originated from the distal ends of all the 22-26 somatic kinetics. Contrary to this view, only four stomatogenic kinetics (K1, Kn, Kn-1, and Kn-2) are involved in stomatogenesis of the opisthe. All paroral dikinetids arise from one single kinetofragment (KF1) to the right of the oral analge while the adoral organelles originate from the three left kinetofragments (KFn KFn-1, and KFn-2). In particular, the future paroral dikinetids perform a complex morphogenetic movement that leads to a situation where the postciliary microtubules of the once posterior kinetosome of each oral dinetid give rise to the cytopharyngeal microtubular ribbons. The postciliary origin of the cytopharyngeal ribbons which could only be detected by an EM study of stomatogenesis shows that basket of Coleps belongs to the cyrtos-type and not to the rhabdos-type basket, where transverse microtubules accompany the basket-forming nematodesmata. The taxonomic implications of these observations, which may lead to a revision of the systematic position of the genus Coleps, are discussed.