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Gastrointestinal helminth parasites of the black rat (Rattus rattus) in Abeokuta, southwest Nigeria

  • C.F. Mafiana (a1), M.B. Osho (a1) and S. Sam-Wobo (a1)

A survey of 612 black rats, Rattus rattus (282 males and 330 females), for infections with helminth parasites was carried out in Abeokuta, in southwest Nigeria. Three hundred and ninety six (64.7%) were infected with one or more of seven species of helminths comprising three cestodes (Hymenolepis diminuta, Taenia taeniaeformis (cyst) and Raillietina sp.) three nematodes (Mastophorus muris, Trichuris muris and Syphacia sp.) and one acanthocephalan (Moniliformis moniliformis). Although the prevalence of infection in males (76.6%) was more than in females (54.5%) (P< 0.01), there was no difference in the mean intensity of infection, MI, (males = 11.6 ± 0.94, females = 11.1 ± 1.56). Among the different weight classes, rats of 100–130g were more infected (89.3%) and had the highest mean intensity (MI = 21.6) than those that weighed <100g (47.1%, MI = 6.4) and >130g (73.9%, MI = 9.3). Moniliformis moniliformis was the most common species encountered (39.2%) and had the highest mean intensity in both sexes ( = 7.4 ± 0.74). Considering the rat-man proximity, this finding has considerable public health implications.

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Al-Rawas, A.Y., Mirza, M. Y., Shafig, M. A. & Al-Kindy, L. (1977) First finding of Monilifornis monilifornis (Bremser 1811) Travassos 1915 (Acanthocephala: Oligacanthor-hynchidae) in Iraq from a human child. Journal of Parasitology 63, 396397.
Ayres, F. B. (1973) Helminths in rats from refuse tips and farmlands. Mammal Review 3, 3536.
Behnke, J. M. (1975) Aspiculuris tetraptera in wild Mus musculus. The prevalence of infection in male and female mice. Journal of Helminthology 49, 8590.
Delattre, P. & Le Louar, H. (1981) Dynamique des populations du rat noir (Rattus rattus) mangrove lacustre. Mammalia A 45, 275288.
Dobson, C. (1961) Certain aspects of the host–parasite relationship of Nematospiroides dubius (Baylis). II. The effect of sex on experimental infections in the rat (an abnormal host). Parasitology 51, 499510.
Hori, E., Miyamoto, K., Ikeda, O., Abe, H. & Nakassawa, H. (1969) A survey of parasitic helminths at Yokohama and Kawasaki. Japanese Journal of Parasitology 18, 256264.
Ikeh, E. I., Anosike, J. C. & Okon, E. (1992) Acanthocephalan infection in man in northern Nigeria. Journal of Helminthology 66, 241242.
Maoyedi, B., Izadi, M., Maleki, M. & Chadiran, E. (1971) Human infection with Moniliforniis monilifortnis (dubius). American Journal of Tropical Medicine and Hygiene 20, 445448.
Mas-Coma, S. (1978) The helminths of small mammals of Formentara (Balearic Islands): preliminary note. Revista Iberica de Parasitologia 38, 139154.
Moore, J. G., Fry, G. & Englert, E. Jr (1969) Thorny-headed worm infection in pre-historic Utans. Clinical Research 17, 149.
Nama, H. S. & Parihar, A. (1976) Quantitative and qualitative analysis of helminth fauna in Rattus rattus rufescens. Journal of Helminthology 50, 99102.
Okaeme, A. N. & Osakwe, M. E. (1995) Helminths of free-range rodents of Lake Kainji area, Nigeria. Bioscience Research Communications 7, 3134.
Okaka, C. E., Adedoyin, J. A. & Ogundele, A. O. (1989) Moniliformis moniliformis (Acanthocephala) infection in house rats in Ilorin, Nigeria. Bioscience Research Communications 1, 6167.
Singhvi, A. & Johnson, S. (1976) The systematics, distribution, population dynamics and seasonal variation of helminth parasites of the common house rat, Rattus rattus. Zeitschrift für Angewandte Zoologie 63, 493496.
Tenora, F. (1965) Towards the elucidation of the problem of mutual relations among parasitic helminths in rodents of the genus Apodemus in Czechoslovakia. Acta Universitatis Agriculturae Brno, DI, 6975.
Udonsi, J. K. (1989) Helminth parasites of wild populations of the black rat, Rattus rattus (L.) from urban, residential and other ecological areas of Nigeria. Acta Parasitologica Polonica 34, 107116.
Udonsi, J. K. & Oranusi, N. A. (1991) Further observations on parastrongyliasis in Nigeria. 1. Pattern of infection in the rat host. Acta Parasitologica Polonica 36, 8386.
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Journal of Helminthology
  • ISSN: 0022-149X
  • EISSN: 1475-2697
  • URL: /core/journals/journal-of-helminthology
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