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Effect of temperature and humidity on the divelopment of Feltiella acarisuga (Diptera: Cecidomyiidae)
- 언어ENG
- URLhttps://db.koreascholar.com/Article/Detail/431865
Feltiella acarisuga(Vallot) is a common gall midge that feeds on many species of spider mites. The effect of temperature and humidity on the development of F. acarisuga female were determined using eggs of the twos potted spider mite, Tetranychus urticae(Koch), as prey under laboratory condition (27.9±0.5℃, 90% RH, and 14:10 [L:D] h). F. acarisuga female laid the most eggs on the 5th day after mating, and the acumulative fecundity reached it speak on the 13th day. The sex ratio of F. acarisuga was 6:4, male to female. The average number of eggs per day during life was 2.7 but during the egg-laying period was 3.1. The female’s lifespan was about 3.5 days longer than that of the male in the adult stage but 6.2 days longer including the egg and larval period. The temperature did not affect the female survival and fecundity, but as humidity was lowered, the female’s survival period washortened and fecundity decreased. When using F. acarisuga as natural enemies, the optimal temperature rage was 20 to 30℃ and the relative humidity was 80 to 95%.
