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Morphometrical and genetic comparison of two nematode species: H. spumosa and H. dahomensis (Nematoda, Heterakidae)

100%

Ribas A., Bellocq J. G., Ros A., Ndiaye P. I., Miquel J.

Acta Parasitologica

2013

tom 58

nr 3

Heterakis is a genus of parasitic nematodes, the majority of which are found in ground-feeding birds and only rarely in mammals. The best-known species is Heterakis spumosa, a parasite associated with the cosmopolitan invasive rodent Rattus rattus of Asiatic origin. Heterakis dahomensis was described in 1911 as a parasite of the Gambian giant rat (Cricetomys gambianus) from Benin (Africa), subsequently synonymized to H. spumosa by Hall (1916). The study of helminths in African rodents is scarce and patchy. Since the original description of H. dahomensis, there have been only a few reports from Africa of species belonging to the genus Heterakis and the validity of this species has never in fact been confirmed or rejected. In the present study individual Heterakis spp. were collected from C. gambianus from Senegal. The morphological data taken point to differences between Heterakis dahomensis and H. spumosa, specifically in the number of tail papillae in males and in the vulva cuticular processes of females. In addition, molecular data revealed differences between these taxa and so H. dahomensis should be considered as a valid species. Moreover, recent changes in the systematics of the genus Cricetomys mean that it is now necessary to study the morphology and genetics of the Heterakis specimens collected from Cricetomys spp. (previously assigned to C. gambianus) in order to determine their taxonomic status as either H. dahomensis o H. spumosa.

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Helmintofauna przewodu pokarmowego gryzoni [Rodentia: Arvicolidae i Muridae] z Kampinoskiego Parku Narodowego

70%

Kucia M., Sulgostowska T., Jozwiak H.

Wiadomości Parazytologiczne

2006

tom 52

nr 2

127-134

Background. The aim of the study was to examine the parasite fauna of rodents living in natural environment, but in close contact with human seats (small village at the area of the natural big forest). Material and methods. 169 rodents from family Arvicolidae and Muridae were examined. The material comprised: Microtus arvalis -5 specimens, Mus musculus - 131, Apodemus silvaticus - 9, Apodemus flavicollis - 8, Apodemus agrarius – 14 and Micromys minutus - 2 specimens, collected between April 2003 and July 2004. Results. The examination of some internal organs (alimentary tract, liver, lungs, kidneys, heart, body cavity) revealed the occurence of 8 helminth species: 3 species of Cestoda (Paranoplocephala macrocephala, Hymenolepis diminuta, Taenia taeniaeformis) and 5 species of Nematoda (Heterakis spumosa, Aspiculuris tetraptera, Syphacia obvelata, Heligmosomoides polygyrum, Mastophorus muris), all in the alimentary tract (including liver). The helminth fauna of every rodent species was determined, as well as seasonal dynamics of their frequency. It was stated that only the species which realize the complex life cycle undergo some seasonal fluctuations of their abundance. Additionally the distribution of particular helminth species along the alimentary tract of their hosts was described.

Ograniczanie wyników

1 Acta Parasitologica

1 Wiadomości Parazytologiczne

1 Bellocq J. G.

1 Jozwiak H.

1 Kucia M.

1 Miquel J.

1 Ndiaye P. I.

1 Ribas A.

1 Ros A.

1 Sulgostowska T.

1 2013

1 2006

Wyniki wyszukiwania

Morphometrical and genetic comparison of two nematode species: H. spumosa and H. dahomensis (Nematoda, Heterakidae)

Helmintofauna przewodu pokarmowego gryzoni [Rodentia: Arvicolidae i Muridae] z Kampinoskiego Parku Narodowego