Effects of photoperiod and temperature on diapause induction in Conogethes punctiferalis （Lepidoptera： Pyralidae）

作     者：Li-Rong Xu Xinzhi Ni Zhen-Ying Wang Kang-Lai He 

作者机构：The State Key Laboratory for Biology of Plant Diseases and Insect Pests Institute of Plant Protection Chinese Academy of Agricultural Sciences China USDA-ARS Crop Genetics and Breeding Research Unit University of Georgia-Tifton Campus Tifton GeorgiaUSA 

出 版 物：《Insect Science》 (昆虫科学（英文版）)

年 卷 期：2014年第21卷第5期

页      面：556-563页

核心收录：

学科分类：080801[工学-电机与电器] 0808[工学-电气工程] 08[工学] 09[农学] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学] 0904[农学-植物保护] 090401[农学-植物病理学] 090402[农学-农业昆虫与害虫防治] 

基　　金：supported by National 973 Program of the Ministry of Science and Technology of the People’s Republic of China Beijing Municipal Sci-Tech Program 

主　　题：Conogethes punctiferalis diapause induction photoperiod sensitive larval instar temperature dependence yellow peach moth 

摘      要：The yellow peach moth, Conogethes punctiferalis （Guenee）, a multivoltine species that overwinters as diapausing larvae, is one of the most serious insect pests on maize in China. Effect of photoperiod and temperature on larval diapause was examined under empirical laboratory conditions. Short-day treatments caused larval diapause at 25℃, and the critical photoperiod was between 12 and 13 h （or 12 h 51 min） light per day. No sensitive instar was identified for diapause induction under alternated short- （L ： D 11 ： 13 h） and long-day （L ： D 14 ： 10 h） treatments at different larval stages. However, accumulative treatment of three instars and 10 d under short-day treatment was required for the induction of 50% larval diapause. All larvae entered diapause at 20℃, whereas less than 3% did so at 30℃, irrespective of the long- or short-day treatment. Furthermore, under the short-day treatment, more than 90% of larvae went into diapause with temperatures ≤ 25℃, but less than 17% did so at 28℃. In contrast, under the long-day treatment, less than 19% of larvae went into diapause with temperatures ≥23 ℃. The forward shift （5℃） of critical temperature under the long-day regime demonstrated the compensatory effect of temperature and photoperiod on diapause induction. In conclusion, C. punctiferalis had a temperature-dependent type Ⅰ photoperiodic diapause response; there was no sensitive instar for diapause determination, but the photoperiodic accumulation time countermeasures both of the short-day cycles and the number ofinstars exposed, and the photoperiodic diapause response, was a temperature-compensated phenomenon.