Geographic variation in photoperiodic diapause induction and diapause intensity in Sericinus montelus （Lepidoptera Papilionidae）

• Published in: 中国昆虫科学：英文版 2012, Vol.19 (3), p.295-302
• Main Author: Xiao-Ping Wang Qiu-Sheng Yang Peter Dalin Xing-Miao Zhou Zhi-Wen Luo Chao-LiangLei
• Format: Article
• Language: English
• Subjects: Logistic回归分析; 临界光周期; 光周期诱导; 凤蝶科; 地理变异; 强度; 滞育诱导; 鳞翅目
• ISSN: 1672-9609; 1744-7917

Due to the risk of extinction and ornamental value of the swallowtail butterfly, Sericinus montelus Gray （Lepidoptera： Papilionidae） in China, knowledge about local adaptations is important for the conservation and economical utilization of the species. In the present study, photoperiodie diapause induction and diapause intensity of S. montelus populations from Jiamusi （46°37＇N）, Beijing （40° 15＇N）, Zibo （36°48＇N）, Fangxian （32°36＇N）, Wuhan （30°33＇N） and Huaihua （27°33＇N） were characterized at 25℃. Logistic regression analysis revealed a significant population x hours of light interaction, confirming that photoperiodic responses varied among populations. The critical photoperiod was positively correlated with latitude and increased toward the north at a rate of about 1 h for each 6.67 degrees of latitude. Survival analyses indicated that survival time of diapausing pupae before adult eclosion differed significantly among populations at 25℃ and 16 ： 8 L ＂D h. The mean duration of pupal diapause was also positively correlated with latitude. Our study reveals geographic variation in the critical photoperiod for diapause induction and in diapause intensity of S. montelus. These results provide useful information for our general understanding about seasonal adaptation in insects and may also be used to predict how geographic populations respond to climate warming.