Melise Cristine Lecheta1, Patricia Jacqueline Thyssen2, Mauricio Osvaldo Moura3. 1. Departamento de Zoologia, Universidade Federal do Paraná, Caixa Postal 19020, Curitiba, PR, 81531-980, Brazil. melise.lecheta@gmail.com. 2. Departamento de Parasitologia, Universidade Estadual de Campinas, Caixa Postal 6109, Campinas, SP, 13083-862, Brazil. 3. Departamento de Zoologia, Universidade Federal do Paraná, Caixa Postal 19020, Curitiba, PR, 81531-980, Brazil.
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.
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.
Authors: Jens Amendt; Carlo P Campobasso; Emmanuel Gaudry; Christian Reiter; Hélène N LeBlanc; Martin J R Hall Journal: Int J Legal Med Date: 2006-04-22 Impact factor: 2.686
Authors: Kaynara C N Rabêlo; Patrícia J Thyssen; Roberta L Salgado; Manuela S C Araújo; Simao D Vasconcelos Journal: Forensic Sci Int Date: 2011-04-13 Impact factor: 2.395
Authors: Stefan Pittner; Bianca Ehrenfellner; Fabio C Monticelli; Angela Zissler; Alexandra M Sänger; Walter Stoiber; Peter Steinbacher Journal: Int J Legal Med Date: 2016-03-07 Impact factor: 2.686
Authors: Stefan Pittner; Bianca Ehrenfellner; Angela Zissler; Victoria Racher; Wolfgang Trutschnig; Arne C Bathke; Alexandra M Sänger; Walter Stoiber; Peter Steinbacher; Fabio C Monticelli Journal: Int J Legal Med Date: 2016-10-21 Impact factor: 2.686