Londt J G
Onderstepoort J Vet Res. 1977 Mar;44(1):13-20.
Studies on the duration of the oviposition and incubation periods of Boophilus decoloratus (Koch, 1844) revealed that these non-parasitic periods are temperature dependent, increase in temperature causing shortening of the periods. Humidity had no effect on duration of either the oviposition or the incubation periods. The relation between the mass of engorged female ticks and that of the eggs they produced was found to be linear. The viability of eggs produced during the first 13 days of oviposition (at 26 degrees C) was greater than that of eggs laid subsequently. The critical temperature for B. decoloratus eggs was found to be 42 degrees C and they were shown to be unable to take up water vapour from damp atmospheres. Both temperature and humidity affected the hatch of eggs. A simple model of the relations between the physical factors of the environment and the various biological phenomena studied has been given.
对变异扇头蜱（Koch，1844）产卵期和孵化期时长的研究表明，这些非寄生期取决于温度，温度升高会使这些时期缩短。湿度对产卵期或孵化期的时长均无影响。发现饱血雌蜱的体重与其所产的卵的重量之间呈线性关系。产卵期前13天（26摄氏度）所产的卵的活力高于随后产下的卵。发现变异扇头蜱卵的临界温度为42摄氏度，并且它们无法从潮湿大气中吸收水汽。温度和湿度均影响卵的孵化。给出了一个关于环境物理因素与所研究的各种生物学现象之间关系的简单模型。
