Temperature-dependent Longevity and Fecundity of Propylea japonica Thunberg (Coleoptera: Coccinellidae) and Its Predation Amount on Two Aphid Species
2019
Park, B.Y., National Institute of Agricultural Sciences, Wanju, Republic of Korea | Jeong, I.H., National Institute of Agricultural Sciences, Wanju, Republic of Korea | Kim, G.H., Chungbuk National University, Cheongju, Republic of Korea | Jeon, S.W., National Institute of Agricultural Sciences, Wanju, Republic of Korea | Lee, S.K., National Institute of Agricultural Sciences, Wanju, Republic of Korea
This study was conducted to investigate the developmental characteristics of Propylea japonica Thunberg (Coleoptera:Coccinellidae) and its consumption of Myzus persicae nymphs at 3 constant temperatures (20.0, 25.0 and 30.0°C; 60 ± 5% relative humidity; 14 h light : 10 h dark). The longevity of adult female P. japonica under 20, 25, and 30°C was 134.0, 101.0 and 55.2 days, respectively. The total fecundity was 508.6, 875.6, and 383.4 eggs during its life span, respectively. The longevity of adult male P. japonica under 20, 25, and 30°C was 128.8, 97.8, and 46.5 days, respectively. Average daily consumption of adult M. persicae by 1st, 2nd, 3rd, and 4th instar P. japonica at 25°C was 2.2, 7.3, 14.5, and 29.1, respectively. The average daily number of M. persicae consumed by male and female P. japonica over their lifetimes was 35.0 and 42.9, respectively. Average daily consumption of adult Aphis gossypii by 1st-4th instar P. japonica at 25°C was 2.2, 7.5, 13.9, and 29.5, respectively. The average daily number of A. gossypii consumed by male and female P. japonica over their lifetimes was 37.0 and 40.8, respectively.
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