A Horsehair Worm, Gordius sp. (Nematomorpha: Gordiida), Passed in a Canine Feces
2015
Hong, E.J., Chungnam National University, Daejeon, Republic of Korea | Sim, C., Baylor University, Waco, Texas | Chae, J.S., Seoul National University, Seoul, Republic of Korea | Kim, H.C., Gangwon National University, Chuncheon, Republic of Korea | Park, J., Chonbuk National University, Cheongju, Republic of Korea | Choi, K.S., Kyungpook National University, Sangju, Republic of Korea | Yu, D.H., Chonnam National University, Gwangju, Republic of Korea | Yoo, J.G., National Institute of Animal Science, RDA, Gwangju, Republic of Korea | Park, B.K., Chungnam National University, Daejeon, Republic of Korea
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.
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