Naem Soraya
Department of Pathobiology, College of Veterinary Medicine, Urmia University, P.O. Box 1177, Urmia, Iran.
Parasitol Res. 2007 Aug;101(3):743-9. doi: 10.1007/s00436-007-0544-5. Epub 2007 May 9.
Habronema microstoma (Spirurida: Habronematidae) is found in the stomach of equines and uses the stable fly as its intermediate host. This nematode causes pathogenic effects in the stomach wall, skin and eye of the host. The present study reports the morphological features of adult worms, using scanning electron microscopy (SEM). The worms had two bilobed lateral lips surrounding the mouth. The buccal vestibule was markedly thickened, and two tridentate teeth were observed. Around the mouth, four sub-median cephalic papillae and two amphids were seen. A pair of lateral cervical papillae was present. There was only one lateral ala in both sexes. In the female, the vulva was opened in the middle of the body. In the male, there were wide caudal alae, and the spicules were unequal. At the posterior end of the male, four pairs of stalked pre-cloacal papillae, a single lateral pre-cloacal papilla, two pairs of post-cloacal papillae and a cluster of small papillae were present.
小口柔线虫（旋尾目：柔线科）寄生于马的胃内，以厩蝇作为中间宿主。这种线虫会对宿主的胃壁、皮肤和眼睛产生致病作用。本研究利用扫描电子显微镜（SEM）报告了成虫的形态特征。虫体口部周围有两个双叶状侧唇。口腔前庭明显增厚，可见两个三叉齿。在口周围，可见四个亚中位头乳突和两个化感器。有一对侧颈乳突。两性均只有一条侧翼。雌性的阴门开口于虫体中部。雄性有宽阔的尾翼，交合刺不等长。在雄性后端，有四对带柄的泄殖腔前乳突、一个单一的侧泄殖腔前乳突、两对泄殖腔后乳突和一簇小乳突。
