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Onchocerciasis in British cattle: a study of Onchocerca gutturosa and O. lienalis in North Wales

  • A.J. Trees (a1), P.J. McCall (a1) and S.J. Crozier (a1)

Abstract

Onchocerca gutturosa and O. lienalis inflections in British cattle were studied by examination of cattle post-mortem originating from North Wales and Cheshire (north west England). In 463 adult animals, the microfilarial (mf) prevalence was 28·5%. In 95·3% of the inflected animals, gravid worms could not be found at either the ligamentum nuchae or the gastro-splenic omentum. Dermal mf at the head were identified as O. gutturosa on the basis of their highly significant assocation with the presence of gravid O. gutturosa at the ligamentum nuchae, which were found in only 3·2% of cattle. Mfs were isolated from different skin sites and from adult worms and a minimum of 10 mfs from each isolate were examined for width and acid phosphatase (AP) staining pattern. The width of O. gutturosa dermal mf was <4 μm (4 isolations), narrower than of putative O. lienalis mf isolated from umbilical skin of cattle without evidence of O. gutturosa, which were in 20/22 isolations >4 μm wide. The dermal mf were also distinguished on the basis of different AP staining patterns which, for each species, correlated closely with that of hatched intrauterine mf from their respective adult female worms. Based on the criteria of morphology and AP staining patterns the mf species prevalences in the survey population were estimated as O. lienalis 24·1% and O. gutturosa 2·2%, with a further 2·2% of cattle inflected with both species. The results indicate that the predilection site of adult O. lienalis is not the gastro-splenic omentum. In North Wales, the distribution of the two species was different; O. lienalis was widely distributed in all cattle rearing areas both lowland and upland, whereas O. gutturosa was largely restricted to valleys close to major rivers.

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Bain, O., Petit, G. & Poulain, B. (1978) Validité des deux espeèces Onchocerca lienalis et O. gutturosa, chez les bovins. Annales de Parasitologie, 53, 421430.
Barka, T. & Anderson, P. J. (1962) Histochemical methods for acid phosphatase using hexazonium pararosaniline as coupler, Journal of Histochemistry and Cytochemistry, 10, 741753.
Bianco, A. E., Ham, P. J., El sinnary, K. & Nelson, G. S. (1980) Large scale recovery of Onchocerca mocrofilariae from naturally inflected cattle and horses. Transactions of the Royal Society of Tropical Medicine and Hygiene, 74, 109.
Eberhard, M. L. (1979) Studies on the Onchocerca (Namatoda: Failarioidea) found in cattle in the United States. I. Systematics of O. gutturosa and O. lienalis with a description of O. Stilesi sp. n. Journal of Parasitology, 65, 379388.
Eichler, D. A. (1973) Studies on Onchocerca gutturosa (Neumann, 1910) and its development in Simulium ornatum (Meigen, 1818). 4. Systematics of O. gutturosa. Journal of Helminthology, 47, 8996.
Eichler, D. A. & Nelson, G. S. (1971) Studies on Onchocerca gutturosa (Neumann, 1910) and its development in Simulium ornatum (Meigen, 1818). I. Observations on O. gutturosa in cattle in South-East England. Journal of Helminthollogy, 45, 245258.
El-Bihari, S. & Hussein, H. S. (1978) Onchocerca gutturosa (Neumann, 1910) in Sudanese cattle I. The mocrofilariae. Revue Elevage Médicine Vétérinaire Pays Tropique, 31, 179182.
Fain, A., Herin, V. & Thienpont, D. (1955) Filariosés des bovidés au Ruanda-Urundi. III Etude parasitologique B) Failaries des genres Setaria et Onchocerca, et microfilaries sanguines et dermiques. Annales de la Societe Belge de Medecine Tropicale, 35, 555583.
Flockhart, H. A. (1982) The identification of some Onchocerca spp. of cattle by isoenzyme analysis. Tropenmedizin und Parasitologie, 33, 5156.
Flockhart, H. A. & Bianco, A. E. (1985) Differentation of Onchocerca gutturosa and O. lienalis by analysis of their GPI isoenzymes. Journal of Helminthology, 59, 187189.
Gibson, C. V. (1952) Comparative morphology of the skin-inhabiting microfilariae of man, cattle and equines in Guatemala. Amercian Journal of Tropical Medicine and Hygiene, 1, 250261.
Johnston, T. H. (1921) Onchocerciasis of Queensland cattle. Transactions of the Royal Sciety of South Australia, 45, 231247.
Mccall, P. J. & Trees, A. J. (1984) Preliminary field studies on potential vectors of bovine onchocerciasis in North Wales. Transactions of the Royal Society of Tropical Medicine and Hygiene, 78, 274.
Muller, R. (1979) Identification of Onchocerca. In: Problems in the Identification of Parasites and their Vectors (editors, Taylor, A. E. R. and Muller, R.). Symposia of the British Society for Parasitology, Vol. 17 pp. 175206. Blackwell Scientific Publications: Oxford, UK.
Omar, M. S. (1978) Histochemical enzyme-staining patterns of Onchocerca volvulus microfilariae and their occurrence in different onchocerciasis areas. Tropenmedizin und Parasitologie, 29, 462472.
Omar, M. S., Denke, A. M. & Raybould, J. N. (1979) The development of Onchocerca ochengi (Nematoda: Filaroidea) to the infective stage in Simulium damnosum s.1. with a note on the histochemical staining of the parasite. Tropenmedizin und Parasitologie, 30, 157162.
Schillhorn Van Veen, T. W. & Blotkamp, J. (1978) Histochemical differentiation of microfilariae of Dipetalonema, Dirofilaria, Onchocerca and Setaria spp. of man and domestic animals in the Zaria area (Nigeria). Tropenmedizin und Parasitologie, 29, 3335.
Scholtens, R. G., Adams, S. R. & Broderson, J. R. (1977) Evidence of onchocerciasis in Georgia cattle: prevalence at slaughter. American Journal of Veterinary Research, 38, 10931097.
Steward, J. S. (1937) The occurrrence of Onchocerca gutturosa Neumann in cattle in England, with and account of its life history and development in Simulium ornatum Mg. Parasitology, 29, 212219.
Venkataratnam, A. & Kershaw, W. E. (1961) Distribution of the microfilariae of Onchocerca in the skin of cattle. Annales de la Sociéte Belge de Medécine Tropicale, 41, 323328.
Webber, W. A. F., Crisp, G., Wright, A. I. & Williams, P. (1957) Records of Onchocerca found at postmortem examination of welsh cattle. Transactions of the Royal Society of Tropical Medicine and Hygiene, 51, 295.
Yarzábal, L., petralanda, I., Arango, M., Lobo, L. & Botto, C. (1983) Acid phosphatase patterns in microfilariae of Onchocerca volvulus s.1. from the Upper Orinoco basin, Venezuela. Tropenmedizin und Parasitilogie, 34, 109112.

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Onchocerciasis in British cattle: a study of Onchocerca gutturosa and O. lienalis in North Wales

  • A.J. Trees (a1), P.J. McCall (a1) and S.J. Crozier (a1)

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