Study of the Behavior and Entomological Parameters of Anopheles in Two Health Zones of The North-Ubangi Province, Democratic Republic of Congo

Abstract

An entomological study was conducted using two mosquito sampling technical, pyrethrum spray catch (PSC) and Human Landing Catch (HLC), inside and outside houses in two Health Zones in North Ubangi Province give the names of Health zones . This study was conducted from 31 March to 14 April 2021. This province is located in the north of the DRC, in a forested area. The objective of this work was to identify the behavior of anopheles and their entomological parameters. In total, 784 samples of Anopheles were captured, 575 by HLC (236 inside the houses and 339 outside), and 209 by (PSC). The anopheles captured in these two environments belong to the following 3 species: Anopheles gambiae s.l, (n= 769 i.e. 98%) Anopheles funestus grp (n=10 i.e. 1%), Anopheles paludis (n=5 i.e. 1%). The behavioral study reveals that Anopheles gambiae s.l is more exophagous than endophagous with a indoors peak startings a little later between 23:00 and 02:00 hours while the outdoors peak starts a little earlier at 19:00 hours. The density of Anopheles gambiae s.l. is 98% of all Anopheles mosquitoes collected. The determination of the sporozoite index by the ELISA method gave 58% of the infested Anopheles . Anopheles gambiae s.l is the major vector of malaria in this environment and is more abundant .