Temperature influences the development, survival, and life history of Axinoscymnus apioides Kuznetsov & Ren (Coleoptera: Coccinellidae), a predator of whitefly

Authors : HUIPING ZHOU, SHAUKAT ALI, XINMING WANG, XIAOSHENG CHEN, SHUNXIANG REN

Pages : 495-501

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Publication Date : 0000-00-00

Article Type : Research Paper

Abstract :The current work was aimed at studying the biology of Axinoscymnus apioides Kuznetsov & Ren insert ignore into journalissuearticles values(Coleoptera: Coccinellidae); under different temperature regimes. These studies were performed at 6 constant temperature regimes insert ignore into journalissuearticles values(17, 20, 23, 26, 29, and 32 °C); under laboratory conditions in which A. apioides was fed with Bemisia tabaci Gennadius insert ignore into journalissuearticles values(Hemiptera: Aleyrodidae); nymphs on Hibiscus rosa-sinensis plants. Results indicated that the developmental period for different immature stages decreased with increases in temperature from 17 to 29 °C. The developmental periods of first instar larvae and pupae decreased, while those of second, third, and fourth larval instars increased for the temperature regimes above 29 °C. The survival rates of different larval stages were almost stable at temperatures ranging between 20 and 32 °C. The highest fecundity of A. apioides females insert ignore into journalissuearticles values(307.80 eggs); was recorded at 23 °C. Based on these results, life tables of A. apioides were constructed for temperatures in the range of 17-29 °C. The innate capacity for increase insert ignore into journalissuearticles values(rm);, the finite rate of increase insert ignore into journalissuearticles values(λ);, and the reproductive rate insert ignore into journalissuearticles values(R0); reached maximum at 26 °C. The mean length of a generation insert ignore into journalissuearticles values(T); decreased with increasing temperatures. The lower development thresholds of A. apioides for the total preimaginal development was 9.21 °C, whereas the number of degree-days required for development from egg to adult emergence was 344.83 degree days. The results indicated that the optimal temperature range for A. apioides ranged between 23 and 26 °C.
Keywords : Axinoscymnus apioides, temperature, development, fecundity, life table