The larval breeding sites of anopheline mosquitoes in eastern Mpumalanga Province, South Africa, were investigated. Using abiotic parameter data collected in the field, environmental conditions that correlate with larval community composition and productivity are reported. Twelve anopheline species were identified, with the malaria vector Anopheles arabiensis Patton (Diptera: Culicidae) ranking as the second most abundant. There was a significant difference in the mean abundance of each species of anopheline from each of the geographically separate breeding sites (Kruskal-WallisANOVA, P<0.05, d.f.= 6,H2 = 17.09). Anopheles merus Dönitz showed a significant positive correlation with salinity (Pearson's product moment, r = 0.971, P < 0.05). Habitats such as rain puddles, hoof prints and residual pools left after rivers recede were important breeding sites and these were characteristically short-lived, and fully or partially sunlit. Anopheles gambiae complex members from the breeding sites surveyed during this study were completely susceptible to the insecticides bendiocarb and deltamethrin that are used for vector control in the area, while An. merus showed possible resistance to DDT according to WHO criteria (<98 % mortality). Larval control operations should include all available breeding sites and focus efforts during the dry season when these areas are discrete.
You have requested a machine translation of selected content from our databases. This functionality is provided solely for your convenience and is in no way intended to replace human translation. Neither BioOne nor the owners and publishers of the content make, and they explicitly disclaim, any express or implied representations or warranties of any kind, including, without limitation, representations and warranties as to the functionality of the translation feature or the accuracy or completeness of the translations.
Translations are not retained in our system. Your use of this feature and the translations is subject to all use restrictions contained in the Terms and Conditions of Use of the BioOne website.
Vol. 24 • No. 2