This study describes the bio-ecology of local Anopheles vectors, their abundance, type and vectoral competence in three communities around Kumasi Metropolis. The study sites were selected based on bio-ecologic zones ...This study describes the bio-ecology of local Anopheles vectors, their abundance, type and vectoral competence in three communities around Kumasi Metropolis. The study sites were selected based on bio-ecologic zones （urban, peri-urban and rural） which influence habitat and behavior. Pyrethrum spray catch was used in the collection of indoor resting mosquitoes from bedrooms of study communities （June-August 2008）. The identification of mosquitoes was based on morphological keys earlier described. The blood meal taken and the stage of digestion and egg development were also observed. A total of 293 mosquitoes were collected and 50.5% were A. gambiae s.I. Of the three bio-ecologic zones： urban, 53.4% were A. gambiae s.l, 27.2% Culex and 19.4% Mansonia; peri-urban, 58% A. gambiae s. 1 and 42% Culex pipien s. 1 and rural, 40.2% A. gambiae s. 1, and 58.8% Culex sp respectively. About 96.6% of all mosquitoes collected had taken blood meals, with 50% of these being Anopheles gambiae s.I. Our findings indicate that urban rather exhibits rural characteristics and can best be described as ＂urban poor＂. However, more data need to be collected to ascertain this. The anopheline mosquitoes in the study communities are highly endophillic and anthropophagic and thus have high vectoral competence. The authors recommend frequent mosquito surveillance to avert malaria epidemic.展开更多
文摘This study describes the bio-ecology of local Anopheles vectors, their abundance, type and vectoral competence in three communities around Kumasi Metropolis. The study sites were selected based on bio-ecologic zones （urban, peri-urban and rural） which influence habitat and behavior. Pyrethrum spray catch was used in the collection of indoor resting mosquitoes from bedrooms of study communities （June-August 2008）. The identification of mosquitoes was based on morphological keys earlier described. The blood meal taken and the stage of digestion and egg development were also observed. A total of 293 mosquitoes were collected and 50.5% were A. gambiae s.I. Of the three bio-ecologic zones： urban, 53.4% were A. gambiae s.l, 27.2% Culex and 19.4% Mansonia; peri-urban, 58% A. gambiae s. 1 and 42% Culex pipien s. 1 and rural, 40.2% A. gambiae s. 1, and 58.8% Culex sp respectively. About 96.6% of all mosquitoes collected had taken blood meals, with 50% of these being Anopheles gambiae s.I. Our findings indicate that urban rather exhibits rural characteristics and can best be described as ＂urban poor＂. However, more data need to be collected to ascertain this. The anopheline mosquitoes in the study communities are highly endophillic and anthropophagic and thus have high vectoral competence. The authors recommend frequent mosquito surveillance to avert malaria epidemic.
