Linthicum K J, Logan T M, Kondig J P, Gordon S W, Bailey C L
Department of Arboviral Entomology, U.S. Army Medical Research Institute of Infectious Diseases, Fort Detrick, Frederick, Maryland 21702-5011.
J Med Entomol. 1991 Mar;28(2):280-3. doi: 10.1093/jmedent/28.2.280.
The life cycle of Hyalomma truncatum Koch (Acari: Ixodidae) required an average of 108 d at 26 +/- 1 degree C. 92-96% RH, and a 12:12 (L:D) photoperiod to complete. Mean weights of unfed larvae, nymphs, and females were 0.02, 0.19, and 11.1 mg, respectively. Weight of larvae, nymphs, and females increased 20-, 91-, and 48-fold, respectively, as a result of feeding on guinea pigs. All stages exhibited host-seeking behavior less than 1 d after emergence. The mean (+/- SE) feeding period of larvae, nymphs, and adults was 3.8 (+/- 0.1), 7.7 (+/- 0.3), and 8.3 (+/- 0.3) d, respectively. Larvae and nymphs molted an average of 11.0 (+/- 0.3), and 30.7 (+/- 0.2) d after engorgement, respectively. The female/male sex ratio, as determined from emerged adults, was 1.4:1. Oviposition started an average of 11.9 (+/- 0.8) d after engorgement, and a mean of 6.701 eggs per female was deposited. A total of only 48% of the eggs enclosed after a mean incubation of 35 (+/- 1.1) d. Females converted 56% of their engorged weight into eggs and produced an average of 12,614 (+/- 2.0) eggs/g of engorged body weight. On the first day of oviposition, an egg less than 24 h old weighed an average of 44.8 (+/- 1.5) micrograms. Egg weight was significantly (P less than 0.01) lower during peak egg production (days 2-8 after onset of oviposition) than during reduced egg production (days 14-20 after onset of oviposition).
截形璃眼蜱（蜱螨亚纲：硬蜱科）的生命周期在26±1℃、相对湿度92 - 96%、光周期12:12（光照:黑暗）条件下平均需要108天才能完成。未进食的幼虫、若虫和雌蜱平均体重分别为0.02毫克、0.19毫克和11.1毫克。由于以豚鼠为食，幼虫、若虫和雌蜱的体重分别增加了20倍、91倍和48倍。所有阶段在羽化后不到1天就表现出寻找宿主的行为。幼虫、若虫和成虫的平均（±标准误）取食期分别为3.8（±0.1）天、7.7（±0.3）天和8.3（±0.3）天。幼虫和若虫分别在饱血后平均11.0（±0.3）天和30.7（±0.2）天蜕皮。从羽化的成虫确定的雌雄性比为1.4:1。产卵平均在饱血后11.9（±0.8）天开始，每只雌蜱平均产卵6.701枚。平均孵化35（±1.1）天后，只有48%的卵孵化出幼虫。雌蜱将其饱血体重的56%转化为卵，平均每克饱血体重产生12,614（±2.0）枚卵。在产卵的第一天，一枚不到24小时的卵平均重44.8（±1.5）微克。产卵高峰期（产卵开始后第2 - 8天）的卵重显著（P < 0.01）低于产卵减少期（产卵开始后第14 - 20天）。
