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African Health Sciences
Makerere University Medical School
ISSN: 1680-6905
EISSN: 1680-6905
Vol. 15, No. 3, 2015, pp. 762-767
Bioline Code: hs15106
Full paper language: English
Document type: Research Article
Document available free of charge

African Health Sciences, Vol. 15, No. 3, 2015, pp. 762-767

 en Inventory of potential vectors of trypanosoma and infection rate of the Tsetse fly in the National Park of Ivindo, Gabon.
Mbang Nguema, O.A.; Mavoungou, J.F.; Mawili-Mboumba, D.P.; Zinga Koumba, R.C.; Bouyou-Akotet, M.K. & M’batchi, B.


Background: Trypanosoma’s vectors distribution is poorly investigated in Gabon, where Trypanosomiasis historical foci exist. Thus, an active detection of Trypanosoma sp transmission needs to be assessed.
Objectives: The present study aims to identify potential vectors of Trypanosoma sp and to evaluate the infection rate of the Tsetse fly in an area of Gabon.
Methods: An entomological survey was conducted in the National Park of Ivindo in May 2012 using Vavoua traps. All captured insects were identified. Tsetse were dissected and organs were microscopically observed to detect the presence of Trypanosoma sp.
Results: 247 biting flies known as vectors of Trypanosomiasis were caught including 189 tsetse flies, 32 Tabanid and 26 Stomoxys check for this species in other resources . Tsetse flies had the highest bulk densities per trap per day (ADT = 3 tsetse / trap / day), while the lowest density was found among Stomoxys (ADT= 0.41 Stomoxys / trap / day). The infection rate of flies was 6.3%. Infectious organs were midguts and to a lesser extent salivary glands and proboscis.
Conclusion: The presence of Tsetse infected by Trypanosoma highlights an existing risk of trypanosomiasis infection in the National Park of Ivindo.

Tsetse fly, Tabanids, vector, Stomoxys, biodiversity, trypanosomiasis

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