牛腹腔唇乳突丝虫及其感染蚴扫描电镜观察

对牛腹腔唇乳突丝虫雌性成虫及其感染蚴扫描电镜观察结果表明,成雌虫头端的口孔、角质围口环、侧唇、背腹唇、亚中乳突和头感器均清晰可见,体表为环行皮纹和纵行皱褶,尾部可见侧附肢、肛孔及尾端刺状突起物,仅极少数成雌虫尾端呈纯圆光滑样,没有突起物.感染蚴的头部基本具备了成虫头部的构造,但发育较原始,其乳交数量较成虫少,尾部可见肛孔、肛唇及一个侧乳突.

Scanning Electron Microscopy of Setaria labiatopapillosa and Its Infective Larvae

Female Setaria labiatopapillosa and its infective larvae were studied by scanning electron microscopy at the critical points of the anterior and posterior parts of the worms. The mouth opening, peribuccal crown, lateral projections, dorsal and ventral projections, submedian papillae, amphids, transverse striations of the cuticle, lateral appendages, phasmidial pore and distinct blunt spines at the tail end were visualized clearly in the adult worms. A few of adult worms have smooth tail end without blunt spines. A structure similar to that of adult worm was demonstrated at the anterior part of infective larvae, but it develops more originally and the pappilae are fewer than those of adult worm.