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Effect of temperature and tissue type on the development of the forensic fly Chrysomya megacephala (Diptera: Calliphoridae)
Journal article   Peer reviewed

Effect of temperature and tissue type on the development of the forensic fly Chrysomya megacephala (Diptera: Calliphoridae)

Y.T.B. Bambaradeniya, W.A.I.P. Karunaratne, J.K. Tomberlin, I. Goonerathne, R.B. Kotakadeniya, P.A. Magni and J. Byrd
Journal of Medical Entomology, Vol.56(6), pp.1571-1581
2019
DOI: https://doi.org/10.1093/jme/tjz097
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Abstract

Chrysomya megacephala Fabricius is one of the most common myiasis-causing and carrion-feeding fly species in the tropics. This species has a worldwide distribution due to globalization and therefore is of critical importance to the public health sector and forensic investigations. Development studies carried worldwide show that Ch. megacephala reared at similar temperatures may require different amounts of time to complete their cycle of growth. The present study determined for the first time the life-history information of this species in Sri Lanka. Chrysomya megacephala colonies were reared on three different food sources (bovine muscle, swine muscle, and swine liver) considering the most common forensic entomology rearing mediums and the capability of Ch. megacephala to cause myiasis in cattle. Furthermore, colonies were reared at four temperature regimes representing several specific development conditions of this blowfly: 1) 20°C representing the estimation of the lower developmental threshold for this species in Sri Lanka; 2) 25 and 27°C representing typical room/environmental temperatures in Sri Lanka; and 3) 38°C as this is the typical living animal temperature, representing myiasis conditions. Results show that temperature significantly affected larval length and width over time; however, tissue type was not a significant factor. The fastest development was recorded at 38°C for immature feeding on bovine muscle (162.15 h), followed by those fed swine liver (184.15 h) and swine muscle (208.00 h). The calculated minimum temperature threshold for Ch. megacephala was 13°C. Data generated will be crucial for future forensic investigations involving living or deceased individuals colonized by this species.

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Collaboration types
Domestic collaboration
International collaboration
Citation topics
3 Agriculture, Environment & Ecology
3.32 Entomology
3.32.1638 Forensic Entomology
Web Of Science research areas
Entomology
Veterinary Sciences
ESI research areas
Plant & Animal Science
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