长爪沙鼠体内周期型马来丝虫微丝蚴的季节周期性

微丝蚴在外周血液中的出现,不仅有明显的日夜周期性,还有明显的季节周期性,后一现象不仅发生在马来丝虫(陆素筠,1956)或班氏丝虫的患者(Brengues等,1975),也见于有犬恶丝虫或匐形恶丝虫寄生的犬体(Kume和Ohishi,1965;Katamme等,1970;Aoki,1971;Cancrml,1975a、b;Sawyer,1975)。本文报道实验感染周期型马来丝虫的长爪沙鼠体内微丝蚴的季节周期性。

STUDIES ON SEASONAL PERIODICITY OF MICROFILARIAE OF PERIODIC BRUGIA MALAY/IN MERIONES UNGUICULATUS

27 jirds experimentally infected with periodic Brugia malayi were observed from April, 1978, to June, 1979. They also revealed a seasonal variation in microfilaraemia. In the first year, a peak number of microfilariae, 90.04 in 40 mm3 blood of orbital sinus appeared in August, and a minimum number, 42.31 in December.During December, 1978 to April of the following year, among 15 jirds with a low level of microfilaraemia, 5 showed amicrofilaraemia at 10 out of 25 examinations. It may be appropriate to point out that if the.se cases were also present in human beings, it would seem best not to carry out such tasks as general surveys, routine checks in winter or spring.