Distribution pattern of Glossina fuscipes fuscipes (Diptera: Glossinidae) in Bahr el Jebel State, southern Sudan

  • Yassir O. Mohammed
  • Mohammed M. Mohammed-Ahmed
  • Khitma H. El Malik
  • Intisar E. El RayahEmail author


A survey to establish the distribution of tsetse flies (Diptera: Glossinidae) in southern Sudan was conducted using biconical traps. Only Glossina fuscipes fuscipes was caught. The results obtained revealed a further northern advance of G. f. fuscipes of c. 29 km along River Bahr el Jebel and 48 km along River Luri, and a southern contraction of Glossina morsitans submorsitans belt from Lewis’ distribution limit. Glossina f. fuscipes was encountered in gallery forest along water courses with no significant differences in sex ratios and proportions of tenerals and non-tenerals between trap catches (P > 0.1). Flies were absent from villages and open savanna woodland forests away from water courses. Trap catches were significantly higher during wet than dry season (t = 2.681; P < 0.025), although flies could be caught in any one location during both seasons. These results are discussed in relation to the current epidemic of human African trypanosomosis (HAT) in southern Sudan.

Key words

Tsetse distribution G. f. fuscipes G. morsitans submorsitans River Bahr el Jebel southern Sudan 


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  1. Allsopp R. (1984) Control of tsetse flies (Diptera: Glossinidae) using insecticides: a review and future prospects. Bulletin of Entomological Research 74, 1–23.CrossRefGoogle Scholar
  2. Challier A., Eyraud M., Lafaye A. and Laveissiére C. (1977) Amélioration du rendement du piège biconi-que pour glossines (Diptera, Glossinidae) par l’emploi d’un cône inférieur bleu. Cahiers ORSTOM, Série Entomologie Médicale et Parasitologie 15, 283–286.Google Scholar
  3. Clausen P. H., Adeyemi I., Bauer B., Breloeer M., Salchow F. and Staak C. (1998) Host preferences of tsetse (Diptera: Glossinidae) based on blood meal identification. Medical and Veterinary Entomology 12, 169–180.CrossRefGoogle Scholar
  4. De La Rocque S., Augusseau X., Guillobez S., Michel V., De Wispelaere G., Bauer B. and Cuisancw D. (2001) The changing distribution of two riverine tsetse flies over 15 years in an increasingly cultivated area of Burkina Faso. Bulletin of Entomological Research 91, 157–166.Google Scholar
  5. De La Rocque S., Lefrancois T., Rrifenberg J. M., Solano R., Kabore I., Bengaly Z., Augusseau X. and Cuisance D. (1998) PCR analysis and spatial repartition of trypanosomes infecting tsetse flies in Sideradougou area (Burkina Faso). Annals of the New York Academy of Sciences 849, 32–38.CrossRefGoogle Scholar
  6. Filledier J. and Politzar H. (1985) Efficacité relative de différentes formes de leurres sur trois espèces de glossines présentes au Burkina Faso. Revue d’Elevage et de Medicine Vétérinaire des Pays Tropicaux 38, 358–363.Google Scholar
  7. Ford J. (1963) The distribution of the vectors of African pathogenic trypanosomes. Bulletin of the World Health Organization 28, 653–669.PubMedPubMedCentralGoogle Scholar
  8. Ford J. and Katondo K. M. (1977) Maps of tsetse fly (Glossina) distribution in Africa 1973, according to sub-generic groups on scale of 1:5000000. Bulletin of Animal Health and Production in Africa 25, 187–193.Google Scholar
  9. Georgina P. (2003) Management of sleeping sickness epidemic in southern Sudan. Journal of Rural and Remote Environmental Health 2, 66–71.Google Scholar
  10. Jordan A. M. (1974) Recent developments in the ecology and methods of control of tsetse flies (Glossina spp.) (Diptera: Glossinidae)—a review. Bulletin of Entomological Research 63, 361–399.CrossRefGoogle Scholar
  11. Katondo K. M. (1984) Revision of second edition of tsetse distribution maps. An interim report. Insect Science and Its Application 5, 381–388.Google Scholar
  12. Kuzoe F. A. S., Baldry D. A. T, Van Der Vloedt A. and Cullens J. R. (1985) Observation of an apparent population extension of Glossina tachinoides Westwood in southern Ivory Coast. Insect Science and Its Application 6, 55–58.Google Scholar
  13. Leak S. G. A. (1999) Tsetse Biology and Ecology: Their Role in the Epidemiology and Control of Trypanosomosis. CABI Publishing, New York. 592 pp.Google Scholar
  14. Lewis D. J. (1949a) The tsetse fly problem in the Anglo-Egyptian Sudan. Sudan Notes and Records 30, 179–210.Google Scholar
  15. Lewis D. J. (1949b) Glossina tachinoides in North-east Africa. Bulletin of Entomological Research 39, 528–530.CrossRefGoogle Scholar
  16. Mohamed-Ahmed M. M. (1989) Distribution of tsetse in Kurmuk district. Blue Nile province, Sudan. Sudan Journal of Veterinary Science and Animal Husbandry 28, 45–54.Google Scholar
  17. Mohamed-Ahmed M. M. and Odulaja A. (1997) Diel activity patterns and host preferences of Glossina fuscipes fuscipes along the shores of Lake Victoria, Kenya. Bulletin of Entomological Research 87, 179–186.CrossRefGoogle Scholar
  18. Mohamed-Ahmed M. M. and Wynholds Y. (1997) Effects of vegetation and weather on trap catches of Glossina fuscipes fuscipes near Lake Victoria, Kenya. Entomologia Experimentalis et Applicata 65, 231–236.CrossRefGoogle Scholar
  19. Moore A. and Richer M. (2001) Re-emergence of epidemic sleeping sickness in southern Sudan. Tropical Medicine and International Health 6, 342–348.CrossRefGoogle Scholar
  20. Newstead R. (1912) A new tsetse fly from British East Africa. Annals of Tropical Medicine and Parasitology 6, 129–130.CrossRefGoogle Scholar
  21. Ogwal L. M. and Kangwagye T. N. (1990) Population dynamics of Glossina fuscipes fuscipes on Buvuma island Lake Victoria, Uganda, pp. 67–77. In Sterile Insect Technique for Tsetse Control and Eradication. Proceedings of the Final Research Co-ordination Meeting organised by the Joint FAO/IAEA Division of Nuclear Techniques in Food and Agriculture, held in Vom, Plateau State, Nigeria, 6–10 June 1988. IAEA, Vienna, Austria.Google Scholar
  22. Okoth J. O. (1982) Further observations on the composition of Glossina population at Lugala, South Busoga district, Uganda. East African Medical Journal 59, 582–584.PubMedGoogle Scholar
  23. Okoth J. O. (1986) Peridomestic breeding sites of Glossina fuscipes fuscipes Newst. in Busoga, Uganda, and epidemiological implications for trypanosomiasis. Acta Tropica 43, 283–286.PubMedGoogle Scholar
  24. Reid R., Kruska R. L., Deitchmann U., Thorthon P. K. and Leak S. G. A. (2000) Population human growth and the extinction of the tsetse fly. Agriculture, Ecosystems and Environment 77, 227–236.CrossRefGoogle Scholar
  25. Rogers D. J. (1977) Study of a natural population of Glossina fuscipes fuscipes Newstead and a model of fly movement. Journal of Animal Ecology 46, 309–330.CrossRefGoogle Scholar
  26. Rogers D. J. and Randolph S. E. (1985) Population ecology of tsetse. Annual Review of Entomology 30, 197–216.CrossRefGoogle Scholar
  27. Snow W. F. (1983) Assignment Report: Tsetse Distribution and Ecology in Relation to Sleeping Sickness in Southern Sudan. May-June 1982. WHO, EM/PD/5: EM/SUD/MPD/005/FR (UNHCR) (2301).Google Scholar
  28. Snow W. E, Declereq J. and Van Nieuwenhove S. (1991) Watering sites in Glossina fuscipes fuscipes habitat as the major foci for the transmission of gambiense sleeping sickness in an endemic area of southern Sudan. Annales de la Société Belge de Médecine Tropicale 11, 27–38.Google Scholar
  29. Takken W. (1984) Studies on the biconical trap as a sampling device for tsetse (Diptera: Glossinidae) in Mozambique. Insect Science and Its Application 5, 357–361.Google Scholar
  30. Vale G. A. (1980) Field study of responses of tsetse flies (Glossinidae) and other Diptera to carbon dioxide, acetone and other chemicals. Bulletin of Entomological Research 70, 563–570.CrossRefGoogle Scholar
  31. Wilson S. G., Morris K. R. S., Lewis I. J. and Krog E. (1963) The effect of trypanosomiasis on rural economy with special reference to the Sudan, Bechuanaland and West Africa. Bulletin of the World Health Organization 28, 595–613.PubMedPubMedCentralGoogle Scholar

Copyright information

© ICIPE 2008

Authors and Affiliations

  • Yassir O. Mohammed
    • 1
  • Mohammed M. Mohammed-Ahmed
    • 2
  • Khitma H. El Malik
    • 3
  • Intisar E. El Rayah
    • 4
    Email author
  1. 1.Central Veterinary Research LaboratoriesAnimal Resources Research CorporationKhartoumSudan
  2. 2.College of Veterinary Medicine and Animal ProductionUniversity of Science and TechnologyKhartoumSudan
  3. 3.Faculty of Veterinary MedicineUniversity of KhartoumSudan
  4. 4.Department of Vector and Biomedical ResearchTropical Medicine Research InstituteKhartoumSudan

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