Age composition, natural survival and population growth of Anopheles fluviatilis James, 1902, the major malaria vector in the endemic belt of Koraput District, Orissa, India.
The population growth of Anopheles fluviatilis, the major malaria vector, was studied in the hill tracts of Koraput district. Immature duration ranged from 11 to 14 days (mean = 12.42 +/- 0.99) in rainy and 12 to 17 days (mean = 14.78 +/- 1.64) in cold season. The probability of immature survival through different developmental stages was maximal in ponds. Daily survival rate of adults fluctuated between 0.55 and 0.92. The net reproductive rate (Ro) was estimated to be 3.0200 for cold and 0.6486 for rainy season. The mean generation time (T) was slightly longer in cold season (22.32 days) than rainy season (21.24 days). The intrinsic rate of population increase (rm) and consequently the finite rate of increase (lambda) were estimated for cold and rainy seasons. Population growth based on adult resting density was also assessed for different seasons.
Gunasekaran
K
K
Vector Control Research Centre, Indira Nagar, Pondicherry, India.
D017677:Age Distribution; D000531:Altitude; D000818:Animals; D000852:Anopheles / Q000254:growth & development*; D005618:Fresh Water; D007194:India / Q000453:epidemiology; D007303:Insect Vectors / Q000254:growth & development*; D008136:Longevity; D011156:Population Density; D011158:Population Growth; D011336:Probability; D012146:Rest; D012621:Seasons; D015996:Survival Rate; D013997:Time Factors