Effect of attraction factors on the sampling of Chrysops silacea and C. dimidiata (Diptera: Tabanidae), vectors of Loa loa (Filaroidea: Onchocercidae) filariasis.
نویسندگان
چکیده
The effects of fire and human host density on Chrysops silacea and C. dimidiata abundance and age structure was evaluated at sites of Loa loa filariasis transmission in the Congo rain forest. Fire increased the catch of C. silacea 8.5-fold at ground level and 5-fold in the canopy, but did not modify the catch size of C. dimidiata. Catch size increased 2-fold when a pygmy camp located near the collecting station was inhabited. The presence of fire did not alter the parity and Loa loa infection rates in the populations.
منابع مشابه
The host preferences of Chrysops silacea and C. dimidiata (Diptera: Tabanidae) in an endemic area of Loa loa in the Congo.
The analysis of 404 blood meals from Chrysops silacea and C. dimidiata which had been collected in the forests of the Chaillu mountains (People's Republic of the Congo) has demonstrated for the first time that both species also feed on non-human hosts. For both species the feeding patterns are fairly similar. However, man remains the main host in 89-90% of the cases. C. silacea and C. dimidiata...
متن کاملCurrent considerations on a Loa loa simian reservoir in the Congo.
Human filariasis due to Loa loa is confined to the tropical rain-forest of Africa. In the same area, simian populations are infected with parasites which have no clear-cut morphological differences with human Loa and exhibit a nocturnal microfilarial periodicity (Duke and Wijers, 1958). Chrysops lungi and C. centurionis are probably responsible for their transmission among monkeys (Duke, 1955)....
متن کاملCurrent considerations on a Loa loa simian reservoir in the Congo
Human filariasis due to Loa loa is confined to the tropical rain-forest of Africa. In the same area, simian populations are infected with parasites which have no clear-cut morphological differences with human Loa and exhibit a nocturnal microfilarial periodicity (Duke and Wijers, 1958). Chrysops lungi and C. centurionis are probably responsible for their transmission among monkeys (Duke, 1955)....
متن کاملTransmission indices of Loa loa in the Chaillu Mountains, Congo.
A longitudinal entomological survey of the vectors of loiasis was conducted in the Missama area (Lekoumou region) in the Congo from September 1987 to August 1989. The principal catching site was a palm grove surrounded by forest 3 km from the village. Landing/biting densities of Chrysops were measured by standardized fly catches lasting 11 hr carried out twice a month. Vector landing densities ...
متن کاملImpact of repeated large scale ivermectin treatments on the transmission of Loa loa.
We have studied the impact of large-scale treatment with ivermectin on the transmission of loiasis in a forest village in south Cameroon where loiasis was highly endemic, with a prevalence of 30%. After one year of parasitological and entomological surveillance without treatment, all consenting residents aged > 5 years received ivermectin 200 micrograms/kg every 3 months. For ethical reasons, t...
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ورودعنوان ژورنال:
- Journal of medical entomology
دوره 28 2 شماره
صفحات -
تاریخ انتشار 1991