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首页> 外文期刊>Parasitology Research >Pediculus humanus capitis (head lice) and Pediculus humanus humanus (body lice): response to laboratory temperature and humidity and susceptibility to monoterpenoids
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Pediculus humanus capitis (head lice) and Pediculus humanus humanus (body lice): response to laboratory temperature and humidity and susceptibility to monoterpenoids

机译：人间小天疱疮（头虱）和人间小天疱疮（体虱）：对实验室温度和湿度的反应以及对单萜的敏感性

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摘要

Human pediculosis is produced by Pediculus humanus humanus (Linnaeus 1758) and Pediculus humanus capitis (De Geer 1767). Laboratory-reared body lice, susceptible to insecticides, were used as reference in toxicological studies on head lice. In this work, we evaluated the survival of both subspecies at different temperatures and relative humidities and we propose the optimal conditions for comparative bioassays. Moreover, we used these conditions to test the activity of three monoterpenoids against both lice. The results showed differential response to changes in temperature and humidity between both organisms. The survival of body lice ranged between 83% and 100% and was not affected for the tested conditions. The survival of head lice depended on temperature, humidity, and exposure time. The optimal conditions for head lice were 18ºC and 97% relative humidity at 18 h of exposition. The insecticidal activity of three monoterpenoids (pulegone, linalool, and 1,8-cineole), evaluated according the selected conditions by topical application, showed no significant differences between males of body and head lice. To conclude, as head lice required more special laboratory conditions than body lice, the optimal head lice conditions should be used in both organisms in comparative bioassays. Body louse is an appropriate organism for testing products against of head louse.
机译：人根小osis病是由人间Pediculus humanus（Linnaeus 1758）和人间Pediculus humanus capitis（De Geer 1767）引起的。实验室饲养的易感染杀虫剂的虱子被用作头虱的毒理学研究参考。在这项工作中，我们评估了两种亚种在不同温度和相对湿度下的存活率，并提出了用于比较生物测定的最佳条件。此外，我们使用这些条件来测试三种单萜类化合物对两种虱子的活性。结果表明两种生物之间对温度和湿度变化的不同响应。体虱的存活率在83％至100％之间，并且在测试条件下不受影响。头虱的存活取决于温度，湿度和暴露时间。头虱的最佳条件是在暴露18 h时，温度为18ºC，相对湿度为97％。通过局部应用根据所选条件评估的三种单萜类化合物（普勒高酮，芳樟醇和1,8-桉树脑）的杀虫活性表明，雄性头虱与体虱没有显着差异。总之，由于头虱比体虱需要更多的特殊实验室条件，因此在比较生物测定中，两种生物均应使用最佳头虱条件。体虱是用于测试产品以抵抗头虱的合适生物。

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