Effect of photoperiod on development and reproduction of Megacopta cribraria(Hemiptera:Plataspidae)  

作　　者：Zhe Xu Juan Cui Rui Bi Wei Xu Shusen Shi Yu Gao 

机构地区：[1]College of Plant Protection, Jilin Agricultural University

出　　处：《Oil Crop Science》2019年第2期90-99,共10页中国油料作物学报(英文版）

基　　金：supported by the National Key R&D Program of China (No.2018YFD0201004);the China Agriculture Research System (No.CARS-04);the Open Research Fund of State Key Laboratory of Integrated Pest Management on Crops in Northeast China (No.DB201505KF03)

摘　　要：Megacopta cribraria (Hemiptera: Plataspidae) continually outbreaks due to suitable photoperiod in recent years. Effect of photoperiod on growth, development and reproduction of M. cribraria were assessed in this study. Results indicated that developmental duration, nutrient accumulation efficiency, and adult fecundity of M. cribraria were significantly different under 6 photoperiodical conditions. Developmental duration of nymph stage gradually tended to be shorter as day time increase. Body weights of 5th instar nymphs for 16 h and 4 h day time photoperiods were 5.2 mg and 4.6 mg, respectively. Moreover, longevity of adults tended to be longer as day time increase. However, for the short day photoperiod (4 L:20 D and 8 L:16 D), population showed no reproductive behaviors. Index of population trend increased with photoperiod extension and adults showed stronger reproductive capacity and longer longevity. This research identified the favorable photoperiodical conditions before outbreak. It may provided reference for ecological adaptability of M. cribraria, and contribute to the scientific basis for forecasting and controlling of M. cribraria.Megacopta cribraria(Hemiptera: Plataspidae) continually outbreaks due to suitable photoperiod in recent years. Effect of photoperiod on growth, development and reproduction of M. cribraria were assessed in this study. Results indicated that developmental duration, nutrient accumulation efficiency, and adult fecundity of M. cribraria were significantly different under 6 photoperiodical conditions. Developmental duration of nymph stage gradually tended to be shorter as day time increase. Body weights of 5 th instar nymphs for 16 h and 4 h day time photoperiods were 5.2 mg and 4.6 mg, respectively. Moreover, longevity of adults tended to be longer as day time increase. However, for the short day photoperiod(4 L:20 D and 8 L:16 D), population showed no reproductive behaviors. Index of population trend increased with photoperiod extension and adults showed stronger reproductive capacity and longer longevity. This research identified the favorable photoperiodical conditions before outbreak. It may provided reference for ecological adaptability of M. cribraria, and contribute to the scientific basis for forecasting and controlling of M. cribraria.

关 键 词：Megacopta cribraria PHOTOPERIOD DEVELOPMENTAL duration NUTRIENT accumulation efficiency population trend 

分 类 号：S[农业科学]