Anopheles gambiae is a highly anthropophilic mosquito responsible for the majority of malaria transmission in Africa. The biting and host preference behavior of this disease vector is largely influenced by its sense of smell, which is presumably facilitated by G protein-coupled receptor signaling [Takken, W. & Knols, B. (1999) Annu. Rev. Entomol. 44, 131-157]. Because of the importance of host ...

BACKGROUND Alternative compounds which can complement pyrethroids on long-lasting insecticidal nets (LN) in the control of pyrethroid resistant malaria vectors are urgently needed. Pyriproxyfen (PPF), an insect growth regulator, reduces the fecundity and fertility of adult female mosquitoes. LNs containing a mixture of pyriproxyfen and pyrethroid could provide personal protection through the py...

BACKGROUND Malaria burden is high in Nigeria, yet information on the major mosquito vectors is lacking especially in the Sudan savannah region of the country. In order to facilitate the design of future insecticide-based control interventions in the region, this study has established the resistance profile of An. gambiae s.l. populations in two northern Nigeria locations and assessed the contri...

A number of mosquito species avoid predator-inhabited oviposition sites by detecting predator-released kairomones. In the laboratory, we found that when offered de-ionized water and de-ionized water conditioned with Notonecta maculata, gravid Anopheles gambiae females preferentially oviposited into the former. We then conducted further experiments using two chemical components found in Notonect...

In this paper we present a method for studying recurrent extinction in a metapopulation of Anopheles gambiae. We model the metapopulation as a collection of populations, in which individuals are represented as haploid DNA sequences that evolve through mutation, genetic drift and clonal replication. Analysis of simulation results demonstrates the potential of repeated measurements of Watterson’s...

Entomological surveys were carried out in six villages at different altitudes in Mpwapwa and Iringa Districts in central Tanzania in March 2002. A total of 1291 mosquitoes were collected. Of these, 887 mosquitoes were collected by light traps and 404 by indoor pyrethrum spray catch technique. Seventy-nine percent (1026) were Anopheles gambiae s.l., 0.2% (N = 3) were An. funestus, and 20.3% (N =...

INTRODUCTION Lymphatic filariasis (LF) is a chronic nematode infection transmitted by mosquitoes and in sub-Saharan Africa it is caused by Wuchereria bancrofti. The disease was targeted for global elimination by 2020 using repeated community-wide mass drug administration (MDA) distributed in endemic areas. However, recently, there has been a growing recognition of the potential role of includin...

Studies on the vector competence and their role in the transmission of malaria and filariasis in Makurdi, Nigeria were carried out over a 6 month period in four localities. A total of 475 adult female mosquitoes were morphologically identified and dissected using standard procedures to determine the parity rates, insemination rates, age structure, oocyst, sporozoite and microfilarial worms. 156...

Une etude transversale a ete realisee dans la ville de Niamey pour tester lefficacite des deux larvicides sur populations imaginales sauvages Cx pipens et dAn. gambiae s.lselon methode lOMS 2005. Les testes etaientBacillus thuringiensis (Bactivec), Bacillus sphaericus (Griselesf) une combinaison Bactivec + Griselesf. taux mortalite les analyses ont realises le logiciel R. induits par doses 5 pp...

The intensification of insecticide use for both public health and Background. agriculture in Africa has contributed to growing insecticide resistance. Today, resistance to World Health Organization (WHO)-approved insecticide classes is widespread. In an agricultural area of Southern Côte d’Ivoire, the main malaria vector shows multiple resistance across Anopheles coluzzii insecticides mediated ...