New filarial nematode from Japanese serows (Naemorhedus crispus: Bovidae) close to parasites from elephants
A new onchocercid species, Loxodontofilaria caprini n. sp. (Filarioidea: Nematoda), found in subcutaneous tissues of 37 (33%) of 112 serows (Naemorhedus crispus) examined in Japan, is described. The female worm had the characteristics of Loxodontofilaria, e.g., the large body size, well-developed es...
Main Authors: | , , , , , , |
---|---|
Format: | Article |
Language: | English |
Published: |
EDP Sciences
2006-09-01
|
Series: | Parasite |
Subjects: | |
Online Access: | http://dx.doi.org/10.1051/parasite/2006133193 |
id |
doaj-9fddc501133b4ac59d13a97909cf8422 |
---|---|
record_format |
Article |
spelling |
doaj-9fddc501133b4ac59d13a97909cf84222021-02-02T06:35:42ZengEDP SciencesParasite1252-607X1776-10422006-09-0113319320010.1051/parasite/2006133193parasite2006133p193New filarial nematode from Japanese serows (Naemorhedus crispus: Bovidae) close to parasites from elephantsUni S.Bain O.Agatsuma T.Katsumi A.Baba M.Yanai T.Takaoka H.A new onchocercid species, Loxodontofilaria caprini n. sp. (Filarioidea: Nematoda), found in subcutaneous tissues of 37 (33%) of 112 serows (Naemorhedus crispus) examined in Japan, is described. The female worm had the characteristics of Loxodontofilaria, e.g., the large body size, well-developed esophagus with a shallow buccal cavity, and the long tail with three caudal lappets. The male worm of the new species, which was first described in the genus, had unequal length of spicules, 10 pairs of pre- and post-caudal papillae, and three terminal caudal lappets. Deirids were present in both sexes. Among four species of the genus Loxodontofilaria: one from the hippopotamus and three from the Elepantidae, L. caprini n. sp. appears close to L. asiatica Bain, Baker & Chabaud, 1982, a subcutaneous parasite of Elephas indicus in Myanmar (Burma). However, L. caprini n. sp. is distinct from L. asiatica in that the Japanese female worm has an esophagus half as long and the microfilariae also half as long with a coiled posterior. The microfilariae were found in the skin of serows. The new parasite appears to clearly illustrate a major event in the evolution of onchocercids: the host-switching. This might have occurred on the Eurasian continent, where elephantids and the lineage of rupicaprines diversified during the Pliocene-Pleistocene, or in Japan, into which some of these hosts migrated.http://dx.doi.org/10.1051/parasite/2006133193Loxondontofilaria caprini n. sp.OnchocercidaeNaemorhedus crispusserowCaprinaeBovidaeelephanthost-switchingJapan |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Uni S. Bain O. Agatsuma T. Katsumi A. Baba M. Yanai T. Takaoka H. |
spellingShingle |
Uni S. Bain O. Agatsuma T. Katsumi A. Baba M. Yanai T. Takaoka H. New filarial nematode from Japanese serows (Naemorhedus crispus: Bovidae) close to parasites from elephants Parasite Loxondontofilaria caprini n. sp. Onchocercidae Naemorhedus crispus serow Caprinae Bovidae elephant host-switching Japan |
author_facet |
Uni S. Bain O. Agatsuma T. Katsumi A. Baba M. Yanai T. Takaoka H. |
author_sort |
Uni S. |
title |
New filarial nematode from Japanese serows (Naemorhedus crispus: Bovidae) close to parasites from elephants |
title_short |
New filarial nematode from Japanese serows (Naemorhedus crispus: Bovidae) close to parasites from elephants |
title_full |
New filarial nematode from Japanese serows (Naemorhedus crispus: Bovidae) close to parasites from elephants |
title_fullStr |
New filarial nematode from Japanese serows (Naemorhedus crispus: Bovidae) close to parasites from elephants |
title_full_unstemmed |
New filarial nematode from Japanese serows (Naemorhedus crispus: Bovidae) close to parasites from elephants |
title_sort |
new filarial nematode from japanese serows (naemorhedus crispus: bovidae) close to parasites from elephants |
publisher |
EDP Sciences |
series |
Parasite |
issn |
1252-607X 1776-1042 |
publishDate |
2006-09-01 |
description |
A new onchocercid species, Loxodontofilaria caprini n. sp. (Filarioidea: Nematoda), found in subcutaneous tissues of 37 (33%) of 112 serows (Naemorhedus crispus) examined in Japan, is described. The female worm had the characteristics of Loxodontofilaria, e.g., the large body size, well-developed esophagus with a shallow buccal cavity, and the long tail with three caudal lappets. The male worm of the new species, which was first described in the genus, had unequal length of spicules, 10 pairs of pre- and post-caudal papillae, and three terminal caudal lappets. Deirids were present in both sexes. Among four species of the genus Loxodontofilaria: one from the hippopotamus and three from the Elepantidae, L. caprini n. sp. appears close to L. asiatica Bain, Baker & Chabaud, 1982, a subcutaneous parasite of Elephas indicus in Myanmar (Burma). However, L. caprini n. sp. is distinct from L. asiatica in that the Japanese female worm has an esophagus half as long and the microfilariae also half as long with a coiled posterior. The microfilariae were found in the skin of serows. The new parasite appears to clearly illustrate a major event in the evolution of onchocercids: the host-switching. This might have occurred on the Eurasian continent, where elephantids and the lineage of rupicaprines diversified during the Pliocene-Pleistocene, or in Japan, into which some of these hosts migrated. |
topic |
Loxondontofilaria caprini n. sp. Onchocercidae Naemorhedus crispus serow Caprinae Bovidae elephant host-switching Japan |
url |
http://dx.doi.org/10.1051/parasite/2006133193 |
work_keys_str_mv |
AT unis newfilarialnematodefromjapaneseserowsnaemorheduscrispusbovidaeclosetoparasitesfromelephants AT baino newfilarialnematodefromjapaneseserowsnaemorheduscrispusbovidaeclosetoparasitesfromelephants AT agatsumat newfilarialnematodefromjapaneseserowsnaemorheduscrispusbovidaeclosetoparasitesfromelephants AT katsumia newfilarialnematodefromjapaneseserowsnaemorheduscrispusbovidaeclosetoparasitesfromelephants AT babam newfilarialnematodefromjapaneseserowsnaemorheduscrispusbovidaeclosetoparasitesfromelephants AT yanait newfilarialnematodefromjapaneseserowsnaemorheduscrispusbovidaeclosetoparasitesfromelephants AT takaokah newfilarialnematodefromjapaneseserowsnaemorheduscrispusbovidaeclosetoparasitesfromelephants |
_version_ |
1724301001390817280 |