Lichtenfels J R, Wergin W P, Murphy C, Pilitt P A
Biosystematics and National Parasite Collection Unit, U.S. Department of Agriculture, Beltsville, Maryland 20705, USA.
J Parasitol. 1995 Aug;81(4):633-6.
A new hypodermal gland was discovered in female nematodes of the family Trichostrongylidae. Because the new structure appears to be associated with the vulva, it was named the perivulval pore. It is similar, based on light and scanning electron microscopy, to phasmids that are located laterally on the tails of nematodes of the class Secernentea. Like phasmids, perivulval pores are paired and bilateral, with cuticular ducts to the surface in the areas of the lateral chords. They are located slightly posterior to the vulva in Haemonchus contortus, Haemonchus placei, Haemonchus similis, Mecistocirrus digitatus, Mazamastrongylus pursglovei, Ostertagia ostertagi, and Cooperia oncophora, but in Trichostrongylus colubriformis they are slightly anterior to the vulva. Because of the location near the vulva and the similarity in structure to phasmids, which are, at least in part, secretory, the perivulval pores should be considered as a possible source of a female attractant for males.
在毛圆科线虫的雌虫中发现了一种新的皮下腺。由于这种新结构似乎与阴门有关，因此被命名为阴门周孔。基于光学显微镜和扫描电子显微镜观察，它与侧尾腺口相似，侧尾腺口位于尾感器纲线虫尾部的两侧。与侧尾腺口一样，阴门周孔也是成对且双侧的，在侧索区域有通向体表的角质导管。在捻转血矛线虫、柏氏血矛线虫、似血矛线虫、指形长刺线虫、普氏马圆线虫、奥氏奥斯特线虫和具钩库珀线虫中，它们位于阴门稍后方，但在蛇形毛圆线虫中，它们位于阴门稍前方。由于其靠近阴门的位置以及与侧尾腺口在结构上的相似性（侧尾腺口至少部分具有分泌功能），阴门周孔应被视为雄性线虫雌性引诱剂的一个可能来源。
