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首页> 外文期刊>Journal of Medical Entomology >Development of Hydrotaea spinigera (Diptera: Muscidae) at Constant Temperatures and Its Significance for Estimating Postmortem Interval
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Development of Hydrotaea spinigera (Diptera: Muscidae) at Constant Temperatures and Its Significance for Estimating Postmortem Interval

机译：在恒定温度下，乳曲调蛛锯（Diptera：Muscidae）的研制及其在估算后延期间隔的重要性

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Hydrotaea spinigera Stein is a necrophagous species, widely distributed in Oriental and Australasian regions. Considering that the postfeeding larvae or puparia of this species can still be found in abundance at the advanced decomposition stage or even the skeleton stage of remains, it can serve as a good supplementary indicator for estimating the minimum postmortem interval (PMImin). This could also extend the range of PMImin when the primary colonizers are no longer associated with the corpse or have emerged as adults. This study investigated the development duration, accumulated degree hours, and larval body length changes of H. spinigera at seven constant temperatures ranging from 16 to 34 degrees C, and established three development models for estimating PMImin, including isomorphen diagram, isomegalen diagram, and thermal summation model. At 16, 19, 22, 25, 28, 31, and 34 degrees C, the development durations of H. spinigera from egg to adult stage were 1,412.6 +/- 62.9, 867.4 +/- 14.9, 657.1 +/- 22.9, 532.3 +/- 10.1, 418.8 +/- 21.3, 379.8 +/- 16.6, and 340.0 +/- 20.3 h, respectively. The lower developmental threshold L-0 was estimated as 10.50 +/- 0.20 degrees C, and the thermal summation constant K was 7,648.83 +/- 146.74 degree hours. Using regression analysis, equations were obtained modeling the change of larval body length with time after hatching at different temperatures. This study provided basic data based on the growth and development of H. spinigera for the estimation of PMImin in forensic science.
机译：spinigera Stein水母是一种食死尸物种，广泛分布于东方和澳大拉西亚地区。考虑到在遗体的晚期分解阶段，甚至骨骼阶段仍能大量发现该物种的摄食后幼虫或蛹，它可以作为估计最小死后间隔（PMImin）的一个很好的补充指标。当主要的殖民者不再与尸体有联系或已经成年时，这也可能扩大PMImin的范围。本研究调查了在16至34摄氏度的七个恒定温度下，棘球绦虫的发育持续时间、累计度数小时和幼虫体长的变化，并建立了三个估算PMImin的发育模型，包括同构图、等轴加伦图和热总和模型。在16、19、22、25、28、31和34摄氏度时，棘球绦虫从卵期到成虫期的发育持续时间分别为1412.6+/-62.9、867.4+/-14.9、657.1+/-22.9、532.3+/-10.1、418.8+/-21.3、379.8+/-16.6和340.0+/-20.3小时。较低的发育阈值L-0估计为10.50+/-0.20摄氏度，热总和常数K为7648.83+/-146.74华氏度小时。通过回归分析，得到了不同温度下孵化后幼虫体长随时间变化的方程。本研究为法医学中PMImin的估计提供了基于棘球绦虫生长发育的基础数据。

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