1. Haemogamasus mandschuricus activates at 10-25℃. They are an dead within 10 minutes at 40 ± 1 ℃.2. The relationship between crawling velocity and temperature is curve Y = a + b logX, crawling velocity is the quickest at 35 ± 1 ℃; and similar indifferent light.3.Crawling of the mites is unaffected by light, Many mites crawl in circle, but a few crawl irregularly.4. The overwhelming majority of the mites leave from dead host within 6 - 7 hours after death, in summer. The mites can leave from live host atany...