Photoperiodic diapause in a subtropical population of Aedes albopictus in Guangzhou, China: optimized field-laboratory-based study and statistical models for comprehensive characterization

• DOI: 10.1186/s40249-018-0466-8
• Publication Date: 2018-08-14T08:53:50Z
• Authors: Dan Xia; Xiang Guo; Tian Hu; Li Li; Ping-Ying Teng; Qing-Qing Yin; Lei Luo; Tian Xie; Yue-Hong Wei; Qian Yang; Shu-Kai Li; Yu-Ji Wang; Yu Xie; Yi-Ji Li; Chun-Mei Wang; Zhi-Cong Yang; Xiao-Guang Chen; Xiao-Hong Zhou
• Keywords: Aedes albopictus; Voltinism

Aedes albopictus is among the 100 most invasive species worldwide and poses a major risk to public health. Photoperiodic diapause provides crucial ecological basis for adaptation of this adverse environments. Ae. vital vector transmitting dengue virus in Guangzhou, but its activities herein remain obscure.In laboratory, yeast powder food slurry were compared proper determination method, critical photoperiod (CPP) was tested at illumination times 11, 11.5, 12, 12.5, 13, 13.5 h. A 4-parameter logistic (4PL) regression model selected estimate CPP. In field, seasonal dynamics population, egg diapause, hatching overwintering eggs investigated monthly, weekly, daily, respectively. distributed lag non-linear (DLNM) used assess associations with meteorological factors.In both wild population Foshan strain induced an incidence greater than 80%, no significant difference (P > 0.1) observed between two methods identifying diapause. The CPP estimated be 12.312 h light. all indexes lowest levels from December February, Route Index first increase March. Diapause displayed pronounced dynamics. It that day lengths 12.111 week2016, 43 12.373 week2017, 41 contributed 50% eggs. Day length main factor related diapause.Photoperiodic Guangzhou China confirmed comprehensively elucidated laboratory field. are form begin hatch large quantities March Guangzhou. Furthermore, study also established optimized investigation system statistical models These findings will contribute prevention control mosquito-borne diseases.