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  • Title: The effect of temperature on development of Sarconesia chlorogaster, a blowfly of forensic importance.
    Author: Lecheta MC, Thyssen PJ, Moura MO.
    Journal: Forensic Sci Med Pathol; 2015 Dec; 11(4):538-43. PubMed ID: 26518289.
    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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