Abstract
Purpose
The blowfly Sarconesia chlorogaster (Diptera: Calliphoridae) is of limited forensic use in South America, due to the poorly known relationship between development time and temperature. The purpose of this study was to determine development time of S. chlorogaster at different constant temperatures, thereby enabling the forensic use of this fly.
Methods
Development time of this species was examined by observing larval development at six temperatures (10, 15, 20, 25, 30, 35 °C). The thermal constant (K), the minimum development threshold (t 0), and development rate were calculated using linear regressions of the development time interval at five temperatures (10–30 °C).
Results
Development interval from egg to adult varied from 14.2 to 95.2 days, depending on temperature. The t0 calculated for total immature development is 6.33 °C and the overall thermal constant is 355.51 degree-days (DD). Temperature affected the viability of pupae, at 35 °C 100 % mortality was observed.
Conclusion
Understanding development rate across these temperatures now makes development of S. chlorogaster a forensically useful tool for estimating postmortem interval.
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Change history
13 November 2020
A Correction to this paper has been published: https://doi.org/10.1007/s12024-020-00331-3
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Acknowledgments
We thank Claudio J. Von Zuben, Marcio R. Pie, Rodrigo F. Krüger, David R. Luz, and Kevin A. Williams who provided helpful comments on a previous version of the paper. This research was partially supported by grants from the Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) (process 312357/2006 and process 307947/2009-2) to M.O.M and Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES) to M.C.L. James J. Roper provided a careful review of the English language.
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Lecheta, M.C., Thyssen, P.J. & Moura, M.O. The effect of temperature on development of Sarconesia chlorogaster, a blowfly of forensic importance. Forensic Sci Med Pathol 11, 538–543 (2015). https://doi.org/10.1007/s12024-015-9727-z
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DOI: https://doi.org/10.1007/s12024-015-9727-z