Hostname: page-component-586b7cd67f-t7fkt Total loading time: 0 Render date: 2024-11-22T06:03:45.975Z Has data issue: false hasContentIssue false
  • English
  • Français

Chromosomes of Onchocerca volvulus (Spirurida:Onchocercidae): A comparative study between Nigeria and Guatemala*

Published online by Cambridge University Press:  05 June 2009

H. Hirai ,
I. Tada ,
H. Takahashi ,
B. E. B. Nwoke  and
G. O. Ufomadu
H. Hirai
Affiliation:
Department of Parasitic Diseases, Kumamoto University Medical School, Japan;
I. Tada
Affiliation:
Department of Parasitic Diseases, Kumamoto University Medical School, Japan;
H. Takahashi
Affiliation:
Japanese Mission, Faculty of Medical Sciences, University of Jos, Nigeria;
B. E. B. Nwoke
Affiliation:
Department of Zoology, Faculty of Natural Science, University of Jos, Nigeria;
G. O. Ufomadu
Affiliation:
Nigerian Institute for Trypanosomiasis Research, Vom, Jos, Nigeria
Get access Rights & Permissions [Opens in a new window]

Abstract

Chromosomes of Nigerian Onchocerca volvulus were compared with those of Guatemalan O. volvulus. Both parasites had basically the same chromosomal construct (2n=8, XY type). Autosomes consisted of a pair of large and two smaller pairs. Sex chromosomes were made up of medium sized X chromosome and very small Y chromosome. It was not possible to infer the position of the centromeres.

Keywords

Onchocerca volvuluschromosomesNigeriaGuatemala
Type
Research Papers
Information
Journal of Helminthology , Volume 61 , Issue 1 , March 1987 , pp. 43 - 46
Copyright
Copyright © Cambridge University Press 1987

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

REFERENCES

Basánez, M.G., Botto, C. & Yarzábal, L. (1983) Caracteristicas de un deme de Onchocerca volvulus s. l. del alto Orinoco (Territorio Federal Amazonas, Venezuela). Estudio citogenetico preliminar. In: Las filariasis humanas en el Territorio Federal Amazonas, Venezuela. (edited by Caicet, ). Publication Cientifica No. 2, 79–82. Editorial Yrgoy C. A., Caracas.Google Scholar
Browne, S.G. (1961) The localization of onchocercomata. Transactions of the Royal Society of Tropical Medicine and Hygiene, 55, 258–262.CrossRefGoogle Scholar
De Leon, J.R. & Duke, B.O.L. (1966) Experimental studies on the transmission of Guatemalan and West African strains of Onchocerca volvulus by Simulium ochraceum, S. metallicum and S. callidum. Transactions of the Royal Society of Tropical Medicine and Hygiene, 60, 735–752.CrossRefGoogle Scholar
Duke, B.O.L., Moore, P.J. & De Leon, J.R. (1967) onchocerca-simulium complexes. V. The intake and subsequent rale of microfilariae of Onchocerca volvulus in forest and Sudansavanna forms of West African Simulium damnosum. Annals of Tropical Medicine and Parasitology, 61, 332–337.CrossRefGoogle Scholar
Franz, M. (1980) Electron microscope study of the cuticle of male and female Onchocerca volvulus from various geographic areas. Tropenmedizin und Parasitologie, 31, 149–164.Google ScholarPubMed
Garms, R. (1983) Studies of the transmission of Onchocerca volvulus by species of the Simulium damnosum complex occurring in Liberia. Zeitschrift fur Angewandte Zoologie, 70, 101–117.Google Scholar
Garms, R. & Ochoa, A. J. O. (1979) Further studies on the relative importance of Guatemalan blackfly species as vectors of Onchocerca volvulus. Tropenmedizin und Parasitologie, 30, 120–128.Google ScholarPubMed
Hirai, H., Sakaguchi, Y. & Tada, I. (1985) Chromosomes of Onchocerca volvulus and O. gutturosa. Zeitschrift fur Parasitenkunde, 71, 135–139.CrossRefGoogle ScholarPubMed
Imai, H.T. & Kubota, M. (1972) Karyological studies of Japanese ants (Hymenoptera, Fromocidae) III. Karyotypes of nine species in Porerinae, Formicinae, and Myrmicinae). Chromosoma, 37, 193–200.CrossRefGoogle Scholar
Miller, M.J. (1966) Observations on spermatogenesis in Onchocerca volvulus and Wuchereria bancrofti. Canadian Journal of Zoology, 44, 1003–1006.CrossRefGoogle ScholarPubMed
Omar, M.S. & Garms, R. (1975) The fate and migration of microfilariae of a Guatemalan strain of Onchocerca volvulus in Simulium ochrcaeum and S. metallicum, and the role of the buccopharyngeal armature in the destruction of microfilariae. Tropenmedizin und Parasitologie, 26, 183–190.Google ScholarPubMed
Oomen, A.P. (1969) Studies on elephantiasis of the legs in Ethiopia. Tropical and Geographical Medicine, 21, 236–253.Google ScholarPubMed
Sandground, J.H. (1934) On the validity of the various species of the genus Onchocerca Diesing. In: Onchocerciasis with special reference to the Central America form of the disease (editors Strong, R. P., Sandground, J. H., Bequaert, J. C. & Ochoa, M. M.). pp. 135–172. Harvard University Press. Cambridge.Google Scholar
Tada, I., Figueroa, M.H. & Takaoka, H. (1974) Epidemiological studies on Robles' disease (American onchocerciasis) in Guatemala. Japanese Journal of Tropical Medicine and Hygiene, 2, 35–51.CrossRefGoogle Scholar
Woodruff, A.W., Choyce, D.P., Muci-Mendoza, F., Hills, M. & Pettitt, L.E. (1966) Onchocerciasis in Guatemala. A clinical and parasitological study with comparisons between the disease there and in East Africa. Transactions of the Royal Society of Tropical Medicine and Hygiene, 60, 707–719.CrossRefGoogle ScholarPubMed