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近年来,在我国各城市蟑螂密度有显著增加趋势,尤以住宅中黑胸大蠊(Periplaneta fuliginosa)在南部城市更为严重。1986年以来,我们在蟑螂研究工作中,发现黑胸大蠊连年大量自然死亡,死后虫尸体形体色不变,亦无奇异臭味,与用乙醚窒息死亡的健康虫体在外表症状上无明显区别。剖检罹病致死虫尸的消化系统中空无食物,而窒息健康虫尸的消化系统中则充满黄色饲料物质。
In recent years, the density of cockroaches in all cities of our country has been significantly increased, especially in the residential areas where the southern city of Periplaneta fuliginosa is more serious. Since 1986, we have found in cockroach research that many black-breasted cockroaches die naturally in large numbers in successive years. After death, the body color of the black-breasted caterpillar remains unchanged and there is no strange odor. On the appearance symptoms of healthy parasites dead with ether asphyxiation Obvious difference. An autopsy of a diseased zombie has no food in the digestive system and a yellow feed material in the digestive system that suffocates a healthy pest.