Strongyloides callosciureus n. sp. (Nematoda: Rhabditoidea), from Asian sciurids, is described based on morphology, morphometry, and the small and large subunit (SSU/LSU) ribosomal RNA gene (rDNA) sequences. This new species was collected from Pallas's squirrels (Callosciurus erythraeus) in the central part of mainland Japan (Honshu), which were originally introduced from Taiwan some decades ago, and plantain squirrels (Callosciurus notatus) imported from Malaysia as personal pets. For comparison, Strongyloides robustus Chandler, 1942 was collected from American red squirrels (Tamiasciurus hudsonicus) and southern flying squirrels (Glaucomys volans) imported from the United States as personal pets. The parasitic females found in North American and Asian sciurids shared some key morphological features such as the ovary running spirally around the gut, and the shapes of the stoma in the apical view and the tail. However, morphometric features of parasitic females in North American and Asian sciurids differed significantly from each other; the former was larger than the latter, and the relative position of the vulva to the whole body length from the mouth was different. The SSU/LSU rDNA sequences supported the division of sciurid Strongyloides isolates by geographical distribution of the host and morphological features, leading us to propose the erection of new species.
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December 2007
Research Article|
December 01 2007
A NEW RHABDITOID NEMATODE SPECIES IN ASIAN SCIURIDS, DISTINCT FROM STRONGYLOIDES ROBUSTUS IN NORTH AMERICAN SCIURIDS
Hiroshi Sato
;
Hiroshi Sato
Laboratory of Veterinary Parasitology, Faculty of Agriculture, Yamaguchi University, 1677-1 Yoshida, Yamaguchi 753-8515, Japan. sato7dp4@yamaguchi-u.ac.jp
* Former address: Hirosaki University School of Medicine, Hirosaki 036-8562, Japan
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Harumi Torii
;
Harumi Torii
Laboratory of Veterinary Parasitology, Faculty of Agriculture, Yamaguchi University, 1677-1 Yoshida, Yamaguchi 753-8515, Japan. sato7dp4@yamaguchi-u.ac.jp
† Nara University of Education, Takabatake-cho, Nara 630-8528, Japan
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Yumi Une
;
Yumi Une
Laboratory of Veterinary Parasitology, Faculty of Agriculture, Yamaguchi University, 1677-1 Yoshida, Yamaguchi 753-8515, Japan. sato7dp4@yamaguchi-u.ac.jp
‡ Laboratory of Veterinary Pathology, School of Veterinary Medicine, Azabu University, Sagamihara 229-8501, Japan
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Hong-Kean Ooi
Hong-Kean Ooi
Laboratory of Veterinary Parasitology, Faculty of Agriculture, Yamaguchi University, 1677-1 Yoshida, Yamaguchi 753-8515, Japan. sato7dp4@yamaguchi-u.ac.jp
§ Department of Veterinary Medicine, College of Veterinary Medicine, National Chung Hsing University, 250 Kuo Kuang Road, Taichung 402, Taiwan
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J Parasitol (2007) 93 (6): 1476–1486.
Citation
Hiroshi Sato, Harumi Torii, Yumi Une, Hong-Kean Ooi; A NEW RHABDITOID NEMATODE SPECIES IN ASIAN SCIURIDS, DISTINCT FROM STRONGYLOIDES ROBUSTUS IN NORTH AMERICAN SCIURIDS. J Parasitol 1 December 2007; 93 (6): 1476–1486. doi: https://doi.org/10.1645/GE-1106.1
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