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首页> 外文期刊>Journal of Medical Entomology >Effect of air temperature and humidity on the survival of pre-imaginalstages of two flea species (Siphonaptera : pulicidae)
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Effect of air temperature and humidity on the survival of pre-imaginalstages of two flea species (Siphonaptera : pulicidae)

机译：空气温度和湿度对两种跳蚤物种（虹吸虫：lic科）的假想阶段存活的影响

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摘要

The survival of immature fleas at 25 and 28 degreesC and 40, 55, 75, and 92% RH was studied to test the hypothesis that the difference in microclimatic preferences determines habitat distribution of Xenopsylla conformis Wagner, 1903 and Xenopsylla ramesis Rothschild, 1904. Survival of X. conformis eggs did not depend on either temperature or humidity or both, whereas eggs of X. ramesis survived significantly less at 40% RH than at higher humidities. No larva of either species survived at 40% RH at either temperature. Larval survival of both species at both temperature regimes was significantly lower at 55% humidity than at higher humidities. Maximal survival time of larvae that died before pupation depended on both temperature and humidity in both species. Change of humidity during early stages of the life cycle (from egg to larva) increased the maximal survival time in X. conformis larvae but decreased that in X. ramesis larvae. Pupil survival was higher at higher humidities independent of temperature. Survival of X. conformis pupae was lower than that of X. ramesis pupae when the relative humidity was low. Humidity change on later stages (from lama to cocoon) decreased X. conformis pupal survival and had no effect on X. ramesis pupal survival. The sex ratio of emerged adults was not affected by either temperature or humidity in both species. Changes in humidity between egg and larval environments significantly decreased the percentage of females in X. conformis emergence at 28 degreesC.
机译：研究了未成熟跳蚤在25和28摄氏度以及40、55、75和92％相对湿度下的存活率，以检验以下假设：微气候偏好的差异决定了Xenopsyllacontis Wagner（1903年）和Xenopsylla ramesis Rothschild（1904年）的栖息地分布。的X.conformis卵不依赖于温度或湿度，或都不依赖于温度和湿度，而沙门氏菌的卵在40％RH时的存活率显着低于较高湿度。在任何温度下，任何一个物种的幼虫都不能在40％RH下存活。在55％的湿度下，两种物种在较高温度下的幼虫存活率均显着低于在较高湿度下。化p前死亡的幼虫的最大生存时间取决于两个物种的温度和湿度。在生命周期的早期阶段（从卵到幼虫），湿度的变化增加了X. conformis幼虫的最大存活时间，但减少了X. ramesis幼虫的最大存活时间。在较高的湿度下，与温度无关，学生的存活率更高。当相对湿度低时，Conformis up的存活率低于Ramesis up的存活率。后期（从喇嘛到茧）的湿度变化降低了X. conformis survival的存活率，并且对X. ramesis up的存活率没有影响。两种物种中成年成年的性别比例均不受温度或湿度的影响。鸡蛋和幼虫环境之间的湿度变化显着降低了28°C时在X. conformis中出现的雌性百分比。

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