Developmental Times of Chrysomya megacephala (Fabricius) (Diptera: Calliphoridae) at Constant Temperatures and Applications in Forensic Entomology
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Yong-qiang Yang [4] ; Xue-bo Li [4] ; Ru-yue Shao [1] ; Zhou Lyu [2] ; Hong-wei Li [3] ; Gen-ping Li [5] ; Lyu-zi Xu [2] ; Li-hua Wan [2]
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[1] Chongqing Medical and Pharmaceutical College
Chongqing Medical and Pharmaceutical College
China
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[2] Chongqing Medical University
Chongqing Medical University
China
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[3] Institute of Forensic Science
Institute of Forensic Science
China
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[4] Shanghai Key Laboratory of Forensic Medicine Institute of Forensic Science Ministry of Justice Shanghai China
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[5] Daping Hospital Research Institute of Surgery Third Military Medical University Chongqing China
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- Localización: Journal of forensic sciences, ISSN-e 1556-4029, ISSN 0022-1198, Vol. 61, Nº. 5, 2016, págs. 1278-1284
- Idioma: inglés
- Texto completo no disponible (Saber más ...)
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Resumen
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.
