The anopheles of Niger

摘要: Nineteen species of Anopheles have been observed in the Republic Niger but only gambiae, An. arabiensis and funestus are epidemiological importance as malaria vectors. The two gambiae complex same breeding sites. But a large part country they disappear all during dry season because lack adequate pools water. Their survival is yet an unexplained phenomenon. most northern wet distribution complex, depending on latitude intertropical front. was no longer found after 1970 its places were destroyed both by dryness human activity. border area between palearctic Mediterranean biogeographical region Afrotropical one. Two different vectorial systems transmission separated Sahara desert. risk importation African vector such parasite Plasmodium falciparum must be considered. For time being, low volume road traffic limits construction paved Transsaharian highway with new settlements developing cultivated areas irrigation increases dangers epidemic outbreaks these oases.