Poinar George
Department of Zoology, Oregon State University, Corvallis, OR 97331, USA.
Syst Parasitol. 2003 Sep;56(1):69-76. doi: 10.1023/a:1025583303428.
The first tylenchid parasite of ants, Formicitylenchus oregonensis n. g., n. sp., is described from a queen carpenter ant Camponotus vicinus Mayr in Western Oregon, USA. The new genus is characterised by the excretory pore anterior to the nerve-ring and rounded tails in the free-living adults, a stylet bearing basal thickenings in the free-living female, a smaller stylet lacking basal thickenings in the male and a short, crenulate leptoderan bursa. The mature parasitic female is light yellow and ovoviviparous. F. oregonensis n. sp. is closely related to members of Metaparasitylenchus Wachek, 1955, with species parasitising beetles living under bark or in rotten wood, a habitat similar to that of carpenter ants. However, males of Metaparasitylenchus are characterised by a fairly long tail with a broad peloderan bursa. It is suggested that this case of tylenchid parasitism in ants is an example of environmental host selection. A review of the described nematode parasites of ants is presented.
首次报道了寄生于蚂蚁的垫刃线虫寄生虫——俄勒冈蚁垫刃线虫（Formicitylenchus oregonensis），新属新种。该寄生虫采自美国俄勒冈州西部的一只维氏弓背蚁（Camponotus vicinus Mayr）蚁后。新属的特征为：排泄孔位于神经环之前，自由生活的成虫尾部呈圆形；自由生活的雌虫口针基部加厚；雄虫口针较小且基部无加厚；具短的、具细齿的瘦尾型交合伞。成熟寄生雌虫浅黄色，卵胎生。俄勒冈蚁垫刃线虫新种与1955年瓦赫克（Wachek）建立的后寄生垫刃线虫属（Metaparasitylenchus）的成员密切相关，该属一些物种寄生于生活在树皮或朽木中的甲虫，这一栖息地与木匠蚁的相似。然而，后寄生垫刃线虫属的雄虫尾部相当长，具宽的肥尾型交合伞。研究表明，这种线虫寄生蚂蚁的情况是环境宿主选择的一个例子。文中还对已描述的蚂蚁线虫寄生虫进行了综述。
