法医学杂志

法医学杂志 ›› 2021, Vol. 37 ›› Issue (2): 175-180.DOI: 10.12116/j.issn.1004-5619.2019.491006

• 论著 • 上一篇    下一篇

恒温下白腹皮蠹的生长发育规律及幼虫的龄期推断

李亮亮1，2*， 王禹2*， 李学博1， 张家硕1， 王江峰2   

  1. 1. 山东政法学院 证据鉴识省级重点实验室，山东 济南 250014； 2. 苏州大学法医系，江苏 苏州 215000
  • 收稿日期:2019-10-16 发布日期:2021-04-25 出版日期:2021-04-28

Development of Dermestes Maculatus at a Constant Temperature and Its Larval Instar Determination

LI Liang-liang1, 2*, WANG Yu2*, LI Xue-bo1, ZHANG Jia-shuo1, WANG Jiang-feng2   

  1. 1. Key Laboratory of Evidence-Identifying in Universities of Shandong, Shandong University of Political Science and Law, Jinan 250014, China; 2. Department of Forensic Medicine, Soochow University, Suzhou 215000, Jiangsu Province, China
  • Received:2019-10-16 Online:2021-04-25 Published:2021-04-28
  • Contact: WANG Jiang-feng, male, professor, major in forensic entomology, forensic biology and forensic microbiology; E-mail: jfwang@suda.edu.cn
  • About author:LI Liang-liang （1988—）, male, MD, chief examiner, major in forensic entomology and forensic genetics; E-mail:1281616230@qq.com WANG Yu （1988—）, male, lecturer, major in forensic entomology; E-mail: yuw@suda.edu.cn The first two authors contribute equally to the work

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摘要： 目的 研究白腹皮蠹（双翅目：皮蠹科）的生长发育规律，为严重腐败或白骨化尸体最短死亡时间（minimum postmortem interval， PMImin）的推断提供基本数据。 方法 在20 ℃、24 ℃、28 ℃和32 ℃ 4个恒温条件下，研究白腹皮蠹的发育历期，并统计体长的变化，作为用于推断其幼虫日龄和龄期的生物学指标。 结果 20 ℃、 24 ℃、 28 ℃ 和32 ℃ 4个恒温条件下白腹皮蠹的发育历期分别为（126.7±10.6）、（69.4±8.2）、（50.4±8.4）和（49.6±6.5） d，体长开始逐渐增长但整体呈非规律性变化。 结论 本研究提供了白腹皮蠹发育规律的基础数据，发育历期对推断严重腐败或白骨化尸体的最短死亡时间具有重要意义，体长变化规律并非白腹皮蠹龄期推断的最佳生物学指标。

关键词: 法医昆虫学, 白骨化尸体, 最短死亡时间, 龄期判定, 白腹皮蠹

Abstract: Objective To establish the basic data for estimating minimum postmortem interval （PMImin） of heavily decayed and skeletonized remains by studying the development of Dermestes maculatus DeGeer （Coleoptera: Dermestidae）. Methods The developmental stages of Dermestes maculatus were observed at four constant temperatures of 20 ℃, 24 ℃, 28 ℃ and 32 ℃, and the changes in body length were also examined as the biological indicator to estimate larval day-age and instar. Results The total developmental time from egg to adult at 20 ℃, 24 ℃, 28 ℃ and 32 ℃ were （126.7±10.6） d, （69.4±8.2） d, （50.4±8.4） d and （49.6±6.5） d, respectively. The body length increased gradually, but changed irregularly as a whole. Conclusion The study provides basic data on the development and growth of Dermestes maculatus, especially on its developmental duration as a significant value for estimating PMImin of heavily decayed and skeletonized remains. Nevertheless, the change of body length is not found to be the best biological indicator for instar determination.

Key words: forensic entomology, skeletonized remains, minimum postmortem interval, instar determination, Dermestes maculatus

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