Diptera Section, Zoological Survey of India, New Alipore, Kolkata, West Bengal, India.
Department of Zoology, University of Calcutta, Kolkata, West Bengal, India.
Med Vet Entomol. 2023 Mar;37(1):164-169. doi: 10.1111/mve.12609. Epub 2022 Sep 7.
The ecological variation in biological and adult life-table attributes of two populations of Aedes aegypti (Diptera: Culicidae) from the desert (Jodhpur) and coastal (Kolkata) regions of India are assessed to understand the reproductive and survival strategies. The results showed that females lived longer than males in both strains. The desert strain was more r-strategist because of its higher intrinsic rate of increase (r = 0.23), finite rate of increase (λ = 1.25), lower life expectancy of males (7.9 days) and females (14.4 days), mean generation time (T = 19.2 days) and doubling time (DT = 3.0 days). However, there was no difference in net reproductive rate (R ) between the desert and coastal strains. The coastal strain showed a longer female life expectancy (22.0 days) than the desert strain (14.4 days). However, the fecundity (eggs/female/day) was lower in the coastal strain (11.4) than in the desert strain (15.1). Conclusively, the desert (Jodhpur) strain is adapted to a better r-strategy than the coastal (Kolkata) strain of Ae. aegypti, which might be helpful to flourish in harsh environmental conditions. This study may provide accurate predictions of Ae. aegypti population dynamics for vector management.
评估了来自印度沙漠（焦特布尔）和沿海（加尔各答）地区的两种埃及伊蚊（双翅目：蚊科）种群的生物和成虫生命表属性的生态变化，以了解其繁殖和生存策略。结果表明，两种品系的雌蚊寿命均长于雄蚊。沙漠品系由于其更高的内禀增长率（r = 0.23）、有限增长率（λ = 1.25）、较低的雄蚊（7.9 天）和雌蚊（14.4 天）预期寿命、平均世代时间（T = 19.2 天）和倍增时间（DT = 3.0 天），表现出更强的 r 策略特征。然而，沙漠和沿海品系之间的净生殖率（R）没有差异。沿海品系的雌蚊预期寿命（22.0 天）长于沙漠品系（14.4 天）。然而，沿海品系的繁殖力（每天每雌产卵数）低于沙漠品系（15.1）。总之，与沿海（加尔各答）品系相比，沙漠（焦特布尔）品系更适应 r 策略，这有助于其在恶劣环境条件下繁衍生息。本研究可能有助于对埃及伊蚊种群动态进行准确预测，从而进行病媒管理。
