Hong Eui-Ju, Sim Cheolho, Chae Joon-Seok, Kim Hyeon-Cheol, Park Jinho, Choi Kyoung-Seong, Yu Do-Hyeon, Yoo Jae-Gyu, Park Bae-Keun
College of Veterinary Medicine, Chungnam National University, Daejeon 35015, Korea.
Department of Biology, Baylor University, Waco, Texas 76798, USA.
Korean J Parasitol. 2015 Dec;53(6):719-24. doi: 10.3347/kjp.2015.53.6.719. Epub 2015 Dec 31.
Nematomorpha, horsehair or Gordian worms, include about 300 freshwater species in 22 genera (Gordiida) and 5 marine species in 1 marine genus (Nectonema). They are parasitic in arthropods during their juvenile stage. In the present study, the used gordian worm was found in the feces of a dog (5-month old, male) in July 2014. Following the worm analysis using light and scanning electron microscopes, the morphological classification was re-evaluated with molecular analysis. The worm was determined to be a male worm having a bi-lobed tail and had male gonads in cross sections. It was identified as Gordius sp. (Nematomorpha: Gordiidae) based on the characteristic morphologies of cross sections and areole on the cuticle. DNA analysis on 18S rRNA partial sequence arrangements was also carried out, and the gordiid worm was assumed to be close to the genus Gordius based on a phylogenic tree analysis.
线形动物门,即马鬃虫或戈尔迪乌斯线虫,包括22个属(戈尔迪线虫属)中的约300种淡水物种以及1个海洋属(海线虫属)中的5种海洋物种。它们在幼体阶段寄生于节肢动物体内。在本研究中,所使用的戈尔迪乌斯线虫于2014年7月在一只5个月大雄性犬的粪便中被发现。在使用光学显微镜和扫描电子显微镜对该线虫进行分析后,通过分子分析对其形态分类进行了重新评估。该线虫被确定为一条具有双叶尾部的雄虫,在横切面上有雄性性腺。基于横切面的特征形态和表皮上的网纹,它被鉴定为戈尔迪线虫属(线形动物门:戈尔迪线虫科)。还对线虫18S rRNA部分序列排列进行了DNA分析,基于系统发育树分析,该戈尔迪线虫属线虫被认为与戈尔迪线虫属关系密切。