Guo Yi, Hu Gengwang, Li Liangliang, Liao Mingqing, Wang Jiangfeng, Wang Yu, Tao Luyang
Department of Forensic Medicine, Soochow University, Suzhou 215000, China.
Criminal Police Branch, Zhongshan Public Security Bureau, Zhongshan 528400, China.
Insects. 2023 Aug 25;14(9):729. doi: 10.3390/insects14090729.
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 larvae and pupae remain, providing a basis for the estimation of the minimum postmortem interval (PMI) 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 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. could not complete the entire developmental process at 16 °C, although it could be completed at other temperatures. The mean developmental times (±SD) of 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) derived from the linear thermal summation models were 4083.00 ± 293.39 degree hours and 12.52 ± 0.83 °C, respectively. In addition, T, intrinsic optimum temperature (T), and upper critical thermal threshold (T) 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 for PMI estimation.
奥贝廷蝇（Aubertin, 1932）是丽蝇科的一种昆虫，在尸体膨胀期之后开始在尸体上定殖，并会停留很长时间。一些早期的尸食性昆虫完成一代发育后就不再与尸体及周围环境相关联，而幼虫和蛹会留存下来，这为估计高度腐败或白骨化尸体的最短死后间隔时间（PMI）提供了依据。然而，关于该物种生长发育的数据尚不完整。因此，我们研究了其在16 - 37 °C八个恒定温度下的发育模式，并构建了各种发育模型，包括同形图、等大线图、线性热积累模型、非线性热力学优化SSI模型和逻辑回归模型。在16 °C时，该昆虫无法完成整个发育过程，不过在其他温度下可以完成。在19 °C、22 °C、25 °C、28 °C、31 °C、34 °C和37 °C时，该昆虫从卵发育到成虫的平均发育时间（±标准差）分别为644.9 ± 36.8小时、422.9 ± 20.1小时、323.1 ± 13.9小时、246.6 ± 11.2小时、202.5 ± 1.8小时、191.5 ± 3.8小时和191.8 ± 2.0小时。从线性热积累模型得出的热积累常数（K）和下限临界温度（T）分别为4083.00 ± 293.39度小时和12.52 ± 0.83 °C。此外，通过优化的非线性热力学优化SSI模型估计的下限临界温度（T₀）、内在最适温度（Tₘ）和上限临界温度（Tₖ）分别为15.76 °C、24.88 °C和38.15 °C。本研究为PMI估计提供了更全面的奥贝廷蝇发育数据。
