Biology and life table of the predacious mite, Agistemus exsertus Gonz. (Acari: Stigmaeidae)
1993
Abou-Awad, B.A. (National Research Centre, Dokki, Cairo (Egypt). Dept. of Plant Protection) | Elsawi, S.A.
The predacious mite, Agistemus exsertus Gonz. was reared on 4 types of animal egg diets (eggs of Tetranychus urticae Koch, Eutetranychus orientalis Klein, Brevipalpus pulcher (C. et F.) and Bemisia tabaci (Genn.)). Life table parameters of each diet (net reproduction rate (Ro), mean generation time (T), intrinsic rate of increase (rm) and finite rate of increase (erm)) were determined. Eggs of T. urticae were found to be preferred above other egg diets as food by A. exsertus and promoted a higher rate of oviposition. The intrinsic rate of increase was 0.15 individuals/female/day, the population multiplied 57.91 times on a generation time of 26.21 days. Rearing on eggs of B. tabaci exhibited more attractive compared with B. pulcher. The average number of eggs consumed daily by female was 17, 21, 9 and 7 eggs of T. urticae, E. orientalis, B. tabaci and B. pulcher respectively. In the sex ratio of the progeny, predator females fed in T. urticae and B. tabaci gave rise to more females
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