厚环黑蝇生长发育规律及其对于死亡时间推断的意义  

Growth and development patterns of Hydrotaea spinigera ( Ditpera: Muscidae) and their significance for estimating postmortem interval

作　　者：马婷[1,2] 桂灵峰 王江峰[2] 

机构地区：[1]华南农业大学资源环境学院,广州510642 [2]广东警官学院刑事技术系,广州510230 [3]广州市公安局番禺区公安分局,广州511400

出　　处：《昆虫学报》2013年第8期890-895,共6页Acta Entomologica Sinica

基　　金：国家自然科学基金项目(30870332)

摘　　要：厚环黑蝇Hydrotaeaspinigera是在尸体腐败时全程在尸体上及尸体周围的泥土中出现的昆虫种类，对于死亡时间的推断有着比较重要的意义。迄今尚未见该种类生长发育系统研究的报道。为了明确其生长发育规律，以对相关的死亡时间推断提供基础数据，本研究通过放置幼猪尸体于野外环境诱集该种类，在室内饲养建立试验种群，分别于20，24，28和32（±1）℃恒温下饲养该昆虫，对其生长发育历期、体长随时间的变化及在尸体演替中出现的时间进行了研究。结果表明：厚环黑蝇在20，24，28和32（±1）℃下完成幼期生长发育所需最短平均发育历期分别为869．6±21．6，673±18．5，410±16．4和379±17．2h，平均发育历期分别为966±74．0，808±80．2，570±40．7和470±30．5h；其体长随发育时间的增加逐渐增长，到达最大体长后在12～14mm内波动，体长与发育时间的关系可用方程Y=（a±bx）／[1±exp（c±dx）]模拟。本研究为较为系统的厚环黑蝇发育生物学研究，其结果对于高度腐败尸体的死亡时间推断及卫生害虫控制有较重要价值。Hydrotaea spinigera Stein is a species that exists in corpses and the surrounding soil during the decay of the cadaver, and it has a great significance for estimating the postmortem interval for badly decomposed remains. Until now there has been no systematic research on the growth and development of this species. This species was collected in succession studies conducted with piglet carcasses. Our research provided an opportunity to derive developmental schedules for H. spinigera at four different constant temperatures [ 20, 24, 28 and 32 （ ± 1 ） ℃ ], and aimed to gain the data of its developmental duration and body length change with time that can be used in forensic investigations. The results showed that at 20, 24, 28 and 32 （ ± 1 ）℃, the minimum average developmental duration of H. spinigera to complete their immature stage was 869.6 ± 21.6, 673 ± 18.5, 410 ± 16.4 and 379 ± 17.2 h, and the average developmental duration was 966 ± 74.0, 808 ± 80. 2, 570 ± 40. 7 and 470 ± 30. 5 h, respectively. The larval body length increased with time, fluctuating between 12 -14 mm after reaching the maximum length. The relationships between larval body length and time at four constant temperatures could be simulated by logistic function y = （ a ± bx） / [ 1 ± exp （ c ± dx ） ]. This is a relatively systematic study on the developmental biology of H. spinigera, which is meaningful for the determination of postmortem interval of more highly decayed corpse as well as for the control of hygienic pests.

关 键 词：厚环黑蝇 生长发育 发育历期 体长 死亡时间 

分 类 号：Q968[生物学—昆虫学]