吗啡对大头金蝇生长发育的影响及其用于推断PMI的初步探讨  

Effect of Morphine on Growth of Chrysomyia megacephala and its Application in the Estimation of PMI

作　　者：吴殿鹏[1,2] 毛润乾[1] 郭明昉[1] 周健[3] 欧桂生[3] 贾凤龙[2] 张润杰[2] 

机构地区：[1]广东省昆虫研究所,广州510260 [2]中山大学昆虫学研究所,广州510275 [3]广东省公安厅刑事技术中心,广州510050

出　　处：《四川动物》2011年第1期36-38,共3页Sichuan Journal of Zoology

基　　金：广东省自然科学基金项目(05003324);广东省计划项目(2006B37301001,2007B030601001)

摘　　要：用致死剂量盐酸吗啡注射家兔,处死后用其肌肉在恒温25℃条件下饲养大头金蝇Chrysomyia megacepha-la初孵幼虫,研究吗啡对大头金蝇生长发育的影响,及其用于法医学中推断死者死后间隔时间(Postmortem interval,PMI)方面的初步探讨。结果显示,在25℃下孵化64h后,处理组大头金蝇的体长、体重及蛹长、蛹重明显大于对照组幼虫(P<0.05),这种趋势一直持续到羽化。吗啡缩短了大头金蝇的发育历期,根据大头金蝇发育历期进行PMI推断时,吗啡可使PMI推断值缩短14.7h。Rabbits were injected with morphine hydrochloride and after euthanizing the rabbits the muscle tissue was used to feed newly-hatched Chrysomyia megacephala larvae （Diptera： Calliphoridae） at 25℃. The effect of morphine on the growth of larvae and its implication in the estimation of postmortem intervals （PMI） were studied. The results showed that at 25℃, starting at 64 h during the growth circle, the lengths and weights of larvae that fed on the muscles of the rabbits injected with morphine hydrochloride were larger than those in the control （P 〈 0.05 ）. This trend continued into eclosion. The total growth of Chrysomyia megacephala that fed on the muscles of the rabbits injected with morphine hydrochloride was less than those in the control. Morphine could result in a PMI deviation of 14.7 hours when the total growth of Chrysomyia megacephala was used to judge PMI.

关 键 词：大头金蝇 盐酸吗啡 法医昆虫学 死后间隔时间 

分 类 号：R151[医药卫生—营养与食品卫生学]