Role of some environmental factors on the breeding activity of Anopheles arabiensis in New Halfa town, eastern Sudan.
Anopheles arabiensis breeding was studied during March 1999-June 2000 in New Halfa town. Of 3642 anopheline larvae collected, 3633 (99.75%) were A. arabiensis: 82.49%, 11.56%, 3.08% and 2.88% of the larvae were collected from shallow sunlit pools resulting from pipes leakages, rain pools, irrigation canals and man-made pools respectively. The overall mean density was 24.34 larvae/10 dips: 40.73 during the rainy season, 30.45 during irrigation and 13.10 in the dry season. Water for crop cultivation increased the relative humidity (P = 0.013) and both factors enhanced A. arabiensis breeding (P < 0.005). There was no significant difference between the rainy and irrigation seasons. A. arabiensis breeding in this area has become perennial as a result of crop irrigation.
Entomology Unit, Faculty of Agriculture and Natural Resources, University of Kassala, New Halfa, Sudan. yosifhimeidan@hotmail.com
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Himeidan
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El Rayah
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Rayah
D000383:Agriculture; D000704:Analysis of Variance; D000818:Animals; D000852:Anopheles / Q000469:parasitology / Q000502:physiology*; D002980:Climate; D004463:Ecology; D017753:Ecosystem; D006801:Humans; D006813:Humidity; D007303:Insect Vectors / Q000469:parasitology / Q000502:physiology*; D007814:Larva / Q000502:physiology; D016778:Malaria, Falciparum / Q000453:epidemiology / Q000517:prevention & control / Q000635:transmission; D009032:Mosquito Control; D011156:Population Density; D011891:Rain; D012098:Reproduction / Q000502:physiology; D012621:Seasons; D013397:Sudan / Q000453:epidemiology; D014504:Urban Health / Q000706:statistics & numerical data*; D014867:Water / Q000469:parasitology; D014881:Water Supply
D014867:Water