title: Developmental Times of Chrysomya megacephala (Fabricius) (Diptera: Calliphoridae) at Constant Temperatures and Applications in Forensic Entomology.
abstract: The characteristic life stages of infesting blowflies (Calliphoridae) such as Chrysomya megacephala (Fabricius) are powerful evidence for estimating the death time of a corpse, but an established reference of developmental times for local blowfly species is required. We determined the developmental rates of C. megacephala from southwest China at seven constant temperatures (16-34°C). Isomegalen and isomorphen diagrams were constructed based on the larval length and time for each developmental event (first ecdysis, second ecdysis, wandering, pupariation, and eclosion), at each temperature. A thermal summation model was constructed by estimating the developmental threshold temperature D0 and the thermal summation constant K. The thermal summation model indicated that, for complete development from egg hatching to eclosion, D0 = 9.07 ± 0.54°C and K = 3991.07 ± 187.26 h °C. This reference can increase the accuracy of estimations of postmortem intervals in China by predicting the growth of C. megacephala.
authors: Shanghai Key Laboratory of Forensic Medicine, Institute of Forensic Science, Ministry of Justice, Guangfuxi Road NO. 1347, Putuo District, Shanghai, 200063, China.|Department of Forensic Medicine, School of Basic Medical Sciences, Chongqing Medical University, Yixueyuan Road No. 1, Yuzhong District, Chongqing, 400016, China.
authors: Yong-Qiang
authors: YQ
authors: Yang
authors: Shanghai Key Laboratory of Forensic Medicine, Institute of Forensic Science, Ministry of Justice, Guangfuxi Road NO. 1347, Putuo District, Shanghai, 200063, China.|Key Laboratory of Evidence Identification in Universities of Shandong Province, Shandong University of Political Science and Law, Jiefangdong Road NO. 63, Lixia District, Jinan, 250014, China.
authors: Xue-Bo
authors: XB
authors: Li
authors: Clinical Medical School, Chongqing Medical and Pharmaceutical College, Daxuecheng Road NO. 82, Shapingba District, Chongqing, 401331, China.
authors: Ru-Yue
authors: RY
authors: Shao
authors: Department of Forensic Medicine, School of Basic Medical Sciences, Chongqing Medical University, Yixueyuan Road No. 1, Yuzhong District, Chongqing, 400016, China.
authors: Zhou
authors: Z
authors: Lyu
authors: Department of Forensic Medicine, Institute of Forensic Science, Chongqing Public Security Bureau, Tongkang Road NO. 1, Beibei District, Chongqing, 400070, China.
authors: Hong-Wei
authors: HW
authors: Li
authors: Daping Hospital, Research Institute of Surgery, Third Military Medical University, Changjiang Road NO. 10, Yuzhong District, Chongqing, 400042, China.
authors: Gen-Ping
authors: GP
authors: Li
authors: Department of Forensic Medicine, School of Basic Medical Sciences, Chongqing Medical University, Yixueyuan Road No. 1, Yuzhong District, Chongqing, 400016, China.
authors: Lyu-Zi
authors: LZ
authors: Xu
authors: Department of Forensic Medicine, School of Basic Medical Sciences, Chongqing Medical University, Yixueyuan Road No. 1, Yuzhong District, Chongqing, 400016, China. forensicwanlihua@126.com.
authors: Li-Hua
authors: LH
authors: Wan
mesh_terms: D000818:Animals; D002681:China; D004175:Diptera / Q000254:growth & development*; D004772:Entomology; D044707:Forensic Sciences; D007814:Larva; D013696:Temperature
keywords: Chrysomya megacephala; forensic entomology; forensic science; isomegalen diagram; isomorphen diagram; postmortem interval; thermal summation model