Abstract: ¹²⁵I isotope was used in marking the blood of the white mice Mus musculus to study the bloodsucking activity of Xenopsylla cheopis & Leptopsylla segnis, including reproducing adults and new emergence adults, at 20℃, 28℃ and 35℃ temperature conditions. The results are as follows: 1. The blood-sucking capacities of reproducing adults, for both of the two species of fleas, are greater than that of new emergence adults in 20℃, but no obvious defference in higher temperature. 2. The blood-sucking capacity of X. cheopis is greater in 35℃ than that in lower temperatur, but it is on the contrary for L.segnis. 3. Both of the two species of fleas appear no obvious difference in blood-sucking rates between two sexes of adults under same experimental conditions. 4. The blood-sucking speed of X.cheopis is much quicker than that of L. segnis. 5. The results also show that if the sucking time is long enough the young adults, both two species, possess blood-sucking ability as strong as the old adults, especially in higher temperature coditions.

摘要： 本文报道1987～1990年在实验室条件下,应用¹²⁵I标记小白鼠血液,通过放射性核素示踪测定的灵敏性,研究印鼠客蚤和缓慢细蚤在20℃、28℃和35℃条件下的吸血活动。结果表明:两种繁殖蚤在20℃条件下的吸血量明显大于新生蚤,而在35℃高温条件下差异不显著。缓慢细蚤的吸血量与温度呈负相关关系,而印鼠客蚤与温度呈正相关。在相同实验条件下,两种蚤的吸血率雌、雄间无显著差异。印鼠客蚤吸血速率较快,30和60分钟吸血量及吸血率无显著差异,但吸血率随温度上升而上升。缓慢细蚤的吸血速率较慢,30分钟吸血不充分,吸血率随温度上升而上升;但在20℃吸血60分钟,繁殖蚤的吸血率可达98％,吸血量亦较30分钟时高两倍左右,吸血率则随温度升高而下降。

关键词: 印鼠客蚤, 缓慢细蚤, Na¹²⁵I, 吸血量, 吸血率