Rev: 07/27/2024
Chromadorea
Chromadoria
Rhabditina
Synonyms:
Strongylus polygyrus Dujardin, 1845
Viannaia polygyrus Hall, 1916
The synlophe is a pattern of surface longitudival cuticular ridges useful to distinguish among species of morphologically similar animal-parasitic nematodes, especially family Trichostrongylidae. For example, in Heligmosomoides polygyrus, the synlophe is described as follows:
The genus Heligmosomoides, as defined by Durette-Desset (1968) and Boulenger (1922), is characterized mainly by:
Females:
Males:
The genus Heligmosomoides is widespread in the Holarctic region and is found mainly in rodents of the Arvicolinae but also in the Murinae. Asakawa (1988) divided the species of the genus into five categories namely the ravassosi-douglasi line�, the relic group�, the laeviscarolinensis line�, the ongicirratum-longispiculatus line� and the polygyrus line.
The polygyrus line parasitizes only Mus and Apodemus. Until now, three species belonging to this line have been described or recorded from China: Heligmosomoides polygyrus polygyrus; H. neopolygyrus and H. asakawae. H. neopolygyrus and H. p. bakeri are present in Japan (Massoni et al., 2012).
Intestinal parasites of rodents
Asakawa, M. 1988. Genus Heligmosomoides Hall, 1916 (Heligmosomidae: Nematoda) from Japanese wood mice, Apodemus spp. Journal of the College of Dairying, 12:349-365.
Boulenger, C.L. 1922. Structure and systematic position of Strongylus polygyrus. Parasitology 14: 206-213.
Dujsrdin, F. 1845.. Histoire naturelle des Helminthes ou Vers Intestinaux. Paris.
Durette-Desset M.C. 1968. Les systemes d'aretes cuticulaires chez les Nematodes Heligmosomes. III. Etude de sept especes parasites de Rongeurs nearctiques et retablissement du genre Heligmosomoides Hall, 1916. Bulletin du Museum national del Histoire naturelle, 40: 186-209.
Hall, M. C. 1916. Nematode Parasites of Mammals of the Orders Rodentia, Lagomorpha and Hyracoidea. Proc. U.S. Nat. Mus. L. 1-258
Massoni, J., Durette-Desset, M.C., Quere, J.P., Audebert, F. 2012. Redescription of Heligmosomoides neopolygyrus, Asakawa and Ohbayashi, 1986 (Nematoda, Heligmosomidae) from a Chinese rodent, Apodemus peninsulae (Rodentia: Muridae); with comments on Heligmosomoides polygyrus polygyrus (Dujardin, 1845) and related species in China and Japan. Parasite 19:367-374,