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International Journal of Tropical Insect Science

, Volume 13, Issue 6, pp 763–770 | Cite as

The Effect of Resettlement and Agricultural Activities on Tsetse Populations in Gambella, South-Western Ethiopia

  • Wondatir Nigatu
  • Makonnen Abebe
  • Mamuye Hadis
  • Mesfin Lulu
Research Article

Abstract

The effect of resettlement programmes and agricultural development projects on the tsetse population in Gambella were investigated. Adult tsetse were collected using biconical traps and moving vehicle catches. The species collected were Glossina pallidipes, G. fuscipes and G. tachinoides. G. pallidipes was the most frequently encountered species. G. morsitans which were reported to be abundant in the area (Balis and Bergeon, 1968; Hutchinson, 1971; Langridge, 1976) were not collected during the present survey.

About 155, 000 ha. of land, formerly reported as tsetse infested, is found to be tsetse free. The natural vegetation is being transformed into farmlands and villages, and the wildlife is being hunted out, remaining only in such areas as Demesaye and Gog forest.

Under such circumstances tsetse hosts may change from wild mammals to man and his domestic animals and outbreaks of nagana and sleeping sickness are likely to occur throughout the region.

Key Words

Resettlement agriculture Glossina host Gambella 

Résumé

Les effets des programmes de réhabilitation et des projets développement agricole sur la population de glossines dans le Gambella ont été examinés. Pour la collecte de mouches tsétsé adultes deux méthodes ont été utilisées, à savoir, les pièges biconiques et la technique de capture des glossines par des véhicules en marche. Les espèces collectionnées étaient des Glossina pallidipes, G. fuscipes et G. tachinoides. G. pallidipes étaient l’espèces la plus fréquemment nencontrée. G. morsitans qu’on avait signalé abondant dans l’environnement (Balis et Bergeon, 1968; Hutchinson, 1971; Langridge, 1976) m’out pas été collectionnés dunant le présent examen.

Environ 155,000 ha. des terres, autrefois signalés infectés de tsétsé sont retrouvés saines de tsétsé. La végétation naturelle cède progressivement sa place à des terres agricoles et à des villages, et la faune sauvage est expulsée, restant seulement dans des endroits comme Demessaye et la forêt de Gog.

Dans de pareils circomstances, il se peut que les mouches se nourrissent principallement des êtres humains et de leurs animaux domestiques plutôt que des mammifères sauvages. Il y a donc une forte possibilité que le Nagana et la maladie du sommeil puissent se manifestes dans toute la région.

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References

  1. Allsop R. (1972) The role of game animals in the maintenance of endemic and enzootic trypanosomiasis in the Lambwe Valley, South Nyanza District, Kenya. Bull. Wld. Hlth. Org. 47, 735–846.Google Scholar
  2. Anonymous (1985) Preliminary Report on the Land use Planning of the Gambella Region in the Resettlement Programmes. Amharic Version. Western Ethiopia Central Planning Office, Jimma. pp. 1–122.Google Scholar
  3. Baker J. R. and MacConnell E. (1969) Human trypanosomiasis in Ethiopia. Trans. R. Soc. Trop, Med. Hyg. 63, 144.CrossRefGoogle Scholar
  4. Balis J. and Bergeon P. (1968) Etude de la repartition des glossines en Ethiopie. Bull. Wld. Hlth. Org. 38, 809.Google Scholar
  5. Bergeon P. (1968) Report to the government of Ethiopia on a veterinary parasitology survey. UNDP-FAO TA. 2458. Rome.Google Scholar
  6. Buxton P. A. (1955) The natural history of tsetse flies. London School Trop. Med. Hyg. Mem. 10, 135–164.Google Scholar
  7. Challier A., Eyraud M., Lafaye A. and Lavessiere C. (1977) Cah. ORSTOM Ser. Entomol. Med. Parasitol. 15, 283–286.Google Scholar
  8. Davies H. (1977) Tsetse flies in Nigeria: A Handbook for Junior Control Staff. Oxford University Press, Ibadan. pp. 102–120.Google Scholar
  9. Hutchinson M. P. (1971) Human trypanosomiasis in southwestern Ethiopia. Eth. Med. J. 9, 3.Google Scholar
  10. Langridge W. P. (1976) A Tsets. and Trypanosomiasis Survey of Ethiopia. Ministry of Overseas Development, London, pp. 1–98.Google Scholar
  11. Mekasha G. (1983) Trypanosomiasis in Gambella, Western Ethiopia. Eth. Med. J. 21, 223–224.Google Scholar
  12. Pollock J. N. (1982) Training manual for tsetse control personnel. In Tsetse Biology, Systematics and Distribution, Techniques. Food and Agriculture Organization, Rome, pp. 1–280.Google Scholar

Copyright information

© ICIPE 1992

Authors and Affiliations

  • Wondatir Nigatu
    • 1
  • Makonnen Abebe
    • 1
  • Mamuye Hadis
    • 1
  • Mesfin Lulu
    • 1
  1. 1.National Research Institute of HealthAddis AbabaEthiopia

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