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Ecological Characteristics and Damage of Maize Weevil and Indian Meal Moth
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- URLhttps://db.koreascholar.com/Article/Detail/288913
Maize weevil (Sittophilus zeamais) and Indian meal moth (Plodia interpunctella) are the dominant species among the stored grain insect pests of the rice grain and bran. This experiment was conducted to investigate developmental characteristic and damages of S. zeamais and P. interpunctella on the rice. Under five constant temperatures, 15, 20, 25, 30 and 35℃, developmental periods from egg to adult of Sittophilus zeamais were 43.0, 36.4, 29.2, 20.8 and 16.3 days, respectively. With egg periods being 9.6, 7.3, 5.2, 3.2 and 2.6 days, and larval periods being 25.2, 22.6, 19.8, 14.5 and 11.3 days, and adult periods being 129.3, 116.1, 108.6, 89.2 and 73.3 days, respectively. Damages of S. zeamais adult at 15, 20, 25 and 30℃ were 67.2, 96.2, 134.0 and 174.5 for 24hr on the rice. Damages of P. interpunctella larval 15, 20, 25 and 30℃ were 56.2, 78.3, 109.4 and 138.7 for 24hr on the rice. The duration of maximum occurrence were June to August for S. zeamais, late May to early August for P. interpunctella.
