Developmental Indicators of <i>Chrysomya nigripes</i> Aubertin under Different Constant Temperature Conditions and an Application Case for Estimating the PMI<sub>min</sub>
<i>Chrysomya nigripes</i> Aubertin, 1932, is a Calliphoridae species that colonize the carcass after the bloat phase and remains for long periods. Some early sarcosaprophagous insects complete one generation of development and are no longer associated with the corpse and surrounding envi...
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| Format: | Article |
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MDPI AG
2023-08-01
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| Series: | Insects |
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| Online Access: | https://www.mdpi.com/2075-4450/14/9/729 |
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| author | Yi Guo Gengwang Hu Liangliang Li Mingqing Liao Jiangfeng Wang Yu Wang Luyang Tao |
| author_facet | Yi Guo Gengwang Hu Liangliang Li Mingqing Liao Jiangfeng Wang Yu Wang Luyang Tao |
| author_sort | Yi Guo |
| collection | DOAJ |
| description | <i>Chrysomya nigripes</i> Aubertin, 1932, is a Calliphoridae species that colonize the carcass after the bloat phase and remains for long periods. Some early sarcosaprophagous insects complete one generation of development and are no longer associated with the corpse and surrounding environment, while <i>C. nigripes</i> larvae and pupae remain, providing a basis for the estimation of the minimum postmortem interval (PMI<sub>min</sub>) for highly decomposed or skeletonized carcasses. However, data on the growth and development of this species are not yet complete. As a result, we studied the developmental patterns of <i>C. nigripes</i> at eight constant temperatures ranging from 16–37 °C and constructed various developmental models, including the isomorphen diagram, isomegalen diagram, linear thermal summation model, nonlinear thermodynamic Optim SSI model, and logistic regression model. <i>Chrysomya nigripes</i> could not complete the entire developmental process at 16 °C, although it could be completed at other temperatures. The mean developmental times (±SD) of <i>C. nigripes</i> from egg to adult at 19 °C, 22 °C, 25 °C, 28 °C, 31 °C, 34 °C, and 37 °C were 644.9 ± 36.8 h, 422.9 ± 20.1 h, 323.1 ± 13.9 h, 246.6 ± 11.2 h, 202.5 ± 1.8 h, 191.5 ± 3.8 h, and 191.8 ± 2.0 h, respectively. The thermal summation constant (K) and lower critical thermal threshold (T<sub>L</sub>) derived from the linear thermal summation models were 4083.00 ± 293.39 degree hours and 12.52 ± 0.83 °C, respectively. In addition, T<sub>L</sub>, intrinsic optimum temperature (T<sub>Φ</sub>), and upper critical thermal threshold (T<sub>H</sub>) estimated by the optimized nonlinear thermodynamic Optim SSI model were 15.76 °C, 24.88 °C, and 38.15 °C, respectively. This study provides more comprehensive developmental data of <i>C. nigripes</i> for PMI<sub>min</sub> estimation. |
| first_indexed | 2024-03-10T22:38:43Z |
| format | Article |
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| institution | Directory Open Access Journal |
| issn | 2075-4450 |
| language | English |
| last_indexed | 2024-03-10T22:38:43Z |
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| spelling | doaj.art-f2de49bc9151422c97f614ca72f41ec12023-11-19T11:15:05ZengMDPI AGInsects2075-44502023-08-0114972910.3390/insects14090729Developmental Indicators of <i>Chrysomya nigripes</i> Aubertin under Different Constant Temperature Conditions and an Application Case for Estimating the PMI<sub>min</sub>Yi Guo0Gengwang Hu1Liangliang Li2Mingqing Liao3Jiangfeng Wang4Yu Wang5Luyang Tao6Department of Forensic Medicine, Soochow University, Suzhou 215000, ChinaDepartment of Forensic Medicine, Soochow University, Suzhou 215000, ChinaDepartment of Forensic Medicine, Soochow University, Suzhou 215000, ChinaCriminal Police Branch, Zhongshan Public Security Bureau, Zhongshan 528400, ChinaDepartment of Forensic Medicine, Soochow University, Suzhou 215000, ChinaDepartment of Forensic Medicine, Soochow University, Suzhou 215000, ChinaDepartment of Forensic Medicine, Soochow University, Suzhou 215000, China<i>Chrysomya nigripes</i> Aubertin, 1932, is a Calliphoridae species that colonize the carcass after the bloat phase and remains for long periods. Some early sarcosaprophagous insects complete one generation of development and are no longer associated with the corpse and surrounding environment, while <i>C. nigripes</i> larvae and pupae remain, providing a basis for the estimation of the minimum postmortem interval (PMI<sub>min</sub>) for highly decomposed or skeletonized carcasses. However, data on the growth and development of this species are not yet complete. As a result, we studied the developmental patterns of <i>C. nigripes</i> at eight constant temperatures ranging from 16–37 °C and constructed various developmental models, including the isomorphen diagram, isomegalen diagram, linear thermal summation model, nonlinear thermodynamic Optim SSI model, and logistic regression model. <i>Chrysomya nigripes</i> could not complete the entire developmental process at 16 °C, although it could be completed at other temperatures. The mean developmental times (±SD) of <i>C. nigripes</i> from egg to adult at 19 °C, 22 °C, 25 °C, 28 °C, 31 °C, 34 °C, and 37 °C were 644.9 ± 36.8 h, 422.9 ± 20.1 h, 323.1 ± 13.9 h, 246.6 ± 11.2 h, 202.5 ± 1.8 h, 191.5 ± 3.8 h, and 191.8 ± 2.0 h, respectively. The thermal summation constant (K) and lower critical thermal threshold (T<sub>L</sub>) derived from the linear thermal summation models were 4083.00 ± 293.39 degree hours and 12.52 ± 0.83 °C, respectively. In addition, T<sub>L</sub>, intrinsic optimum temperature (T<sub>Φ</sub>), and upper critical thermal threshold (T<sub>H</sub>) estimated by the optimized nonlinear thermodynamic Optim SSI model were 15.76 °C, 24.88 °C, and 38.15 °C, respectively. This study provides more comprehensive developmental data of <i>C. nigripes</i> for PMI<sub>min</sub> estimation.https://www.mdpi.com/2075-4450/14/9/729forensic entomology<i>Chrysomya nigripes</i>developmentpostmortem intervalhighly decomposed |
| spellingShingle | Yi Guo Gengwang Hu Liangliang Li Mingqing Liao Jiangfeng Wang Yu Wang Luyang Tao Developmental Indicators of <i>Chrysomya nigripes</i> Aubertin under Different Constant Temperature Conditions and an Application Case for Estimating the PMI<sub>min</sub> Insects forensic entomology <i>Chrysomya nigripes</i> development postmortem interval highly decomposed |
| title | Developmental Indicators of <i>Chrysomya nigripes</i> Aubertin under Different Constant Temperature Conditions and an Application Case for Estimating the PMI<sub>min</sub> |
| title_full | Developmental Indicators of <i>Chrysomya nigripes</i> Aubertin under Different Constant Temperature Conditions and an Application Case for Estimating the PMI<sub>min</sub> |
| title_fullStr | Developmental Indicators of <i>Chrysomya nigripes</i> Aubertin under Different Constant Temperature Conditions and an Application Case for Estimating the PMI<sub>min</sub> |
| title_full_unstemmed | Developmental Indicators of <i>Chrysomya nigripes</i> Aubertin under Different Constant Temperature Conditions and an Application Case for Estimating the PMI<sub>min</sub> |
| title_short | Developmental Indicators of <i>Chrysomya nigripes</i> Aubertin under Different Constant Temperature Conditions and an Application Case for Estimating the PMI<sub>min</sub> |
| title_sort | developmental indicators of i chrysomya nigripes i aubertin under different constant temperature conditions and an application case for estimating the pmi sub min sub |
| topic | forensic entomology <i>Chrysomya nigripes</i> development postmortem interval highly decomposed |
| url | https://www.mdpi.com/2075-4450/14/9/729 |
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