• Animal Systematics, Evolution and Diversity
• /
• 제8권2호
• /
• pp.223-230
• /
• 1992

한국산 철선충류의 분류학적 연구를 위해 1986년 8월부터 1992년 5월까지 남한의 16개 지역에서 철선충을 채집하여 조사한 결과 1속에 속하는 1신종 1한국 미기록종이 확인되었다. 이들은 Gordius lineatus n. sp.와 Gordius robustus이며, 기재와 함께 그림을 작성하였다. 지금까지 한국산 철선충류는 1906년 Linstow에 의해 2속(Gordius, Parachordodes)3종, 1959년 조에 의해 Gordius aquaticus 1종이 기록되어있다. 따라서 한국산 철선충류는 모두 2속 6종이 된다.

• Animal Systematics, Evolution and Diversity
• /
• 제17권2호
• /
• pp.165-169
• /
• 2001

저자들은 한국과 뉴질랜드에서 채집된 철선충(Gordius 속)의 표피상에 나타난 관상구조를 주사전자 현민경으로 관찰하였다. 한국산 철선충의 암컷 한 마리는 종을 동정할 수 없었으나 뉴질랜드산 철선충의 수컷 한 마리는 Gordius paranensis 로 동정되었다. 다른 뉴질랜드산 G. paranensis 수컷들에서는 표피상의 관상구조나 관상구조 저변의 소공들을 갖고 있지 않았다. 이로서 표피 관상구조는 종 특이성을 나타내는 구조물로는 속단하기 어려우나 그렇다고 이들은 조직과정 중의 오염물도 아니다. 이 관상구조물들은 충체의 샘조직의 산물로 여려지며 앞으로 이들의 내부구조등에 관한 연구가 있어야 할 것이다. 철선충 표피상의 관상구조물은 처음 보고되는 것이다.

• Parasites, Hosts and Diseases
• /
• 제53권6호
• /
• pp.719-724
• /
• 2015

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.

• 한국동물위생학회지
• /
• 제39권4호
• /
• pp.271-276
• /
• 2016

Horsehair or gordian worms (Nematomorpha) were identified with 22 genera (Gordiida) and 5 marine species (Nectonema) until now. During juvenile phase in development, they gain parasitic activity in arthropods. In this study, a gordian worm was detected in the feces of a dog living in Nonsan-si, Chungcheongnam-do, Korea. Using this worm, we evaluated the morphological characteristics by light microscopic analysis. Furthermore, the morphological classification was re-evaluated by scanning and transverse electron microscopes. The worm was determined that it is male adult having a bi-lobed tail and male gonads in cross sections. Based on the morphological characteristics including cross sections of body and areole on the cuticle, the parasite was also identified as Gordius sp. (Nematomorpha: Gordiidae).

• Parasites, Hosts and Diseases
• /
• 제50권3호
• /
• pp.263-267
• /
• 2012

The present study was performed to describe 2 human cases infected by the horsehair worm, Parachordodes sp., in Japan. Two gordiid worms were collected in the vomit and excreta of an 80-year-old woman in November 2009 in Kyoto city, and in the mouth of 1-year-old boy in December 2009 in Nara city, Japan, respectively. Both worms were males having bifurcated posterior ends and male gonads in cross sectional specimens. They were identified as Parachordodes sp. (Nematomorpha: Chordodidae) based on the characteristic morphologies of cross sections and areoles in the cuticle. DNA analysis on 18S rRNA partial sequence arrangements was also carried out and both worms were assumed to be close to the genus Paragordionus based on tree analysis, and far from Gordius sp. which has already been reported in humans in Japan. DNA sequencing of the Parachordodes worm does not appear on the database; therefore, more information on the gene sequences of the genus Parachordodes from humans, animals, or intermediates is required.