丝光绿蝇幼虫发育形态学及其在死亡时间推断中的应用探讨

Chronometrical Morphology of Lucilia sericata and Its Application in the Determination of Postmortem Interval

为了明确对于凶杀案件中死亡时间判断有重要意义的蝇类幼虫的形态特征变化规 律．在１２、１６、２０、２４、２８． ３２℃饲养丝光绿蝇并定期取样，显微镜下观察其形态变化．结 果表明后气门形态、表皮、消化道等随时间而发生规律性的变化，据此可将幼虫期划分为８ 个阶段．不同温度下到达上述各阶段的时间不同，低温下需要时间长，高温下需要时间短 幼虫体表形态可用做死亡时间判断的指标．

To clerify the chronometrical. morphology pattern of Lucilia sericata for application in the determination of postmortem interval in homicide cases. The forensic important fly Lucilia sericata was reared at different constant temperatures to stydy its morphological change during their growth. The structural traits of posterior spitacles, skin and digestive dust regularly changed with larval growth and according to these,the whole stage of Lucilia sericata could.be divided into 8 stages. The duration each stage needed is different in different constant temperature longer in low temperature and shorter in higher temperature. Some traits of maggot morphology could be used as insect age mark, thus postmortem interval indicator.