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首页> 外文期刊>Ecological Entomology >Environmental conditions and their impact on immunocompetence and pathogen susceptibility of the Caribbean termite Nasutitermes acajutlae
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Environmental conditions and their impact on immunocompetence and pathogen susceptibility of the Caribbean termite Nasutitermes acajutlae

机译：环境条件及其对加勒比白蚁Nasutitermes acajutlae的免疫能力和病原体敏感性的影响

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1. Little is known about interactions between environmental conditions surrounding insects and their immune responses.2. The environment in and around termite colonies, including temperature, relative humidity, soil pH, and light was analysed using principal components analysis (PCA).3. The relationship between these abiotic parameters and two aspects of termite immunity (phenoloxidase activity and lipid content) was examined in field-caught workers of Nasutitermes acajutlae Holmgren. Finally, termites from warm/dry and cool/moist habitats were exposed to Metarhizium anisopliae to determine their susceptibility to mycosis.4. PCA indicated that environmental components external to the nest [ ambient temperature, ambient relative humidity (RH), soil temperature and light] comprised the majority (PC1 = 37.5%) of variation. Internal variables (nest temperature and RH) and nest volume accounted for 19.6% (PC2) of the variation with pH comprising 12.9% (PC3).5. AIC and regression models suggested that ambient temperature was most strongly and positively associated with immune variables and that relative humidity may also play a role. Termites from warm/dry colonies were less susceptible to M. anisopliae than termites from cool/moist colonies.6. Thus, termites nesting in warmer habitats may exhibit increased immune-related measures and reduced susceptibility to mycosis compared with termites from cooler habitats.
机译：1.关于昆虫周围环境条件与其免疫反应之间的相互作用知之甚少2。使用主成分分析（PCA）分析了白蚁菌落及其周围的环境，包括温度，相对湿度，土壤pH值和光照。3。这些非生物参数和白蚁免疫力的两个方面（酚氧化酶活性和脂质含量）之间的关系已在Nasutitermes acajutlae Holmgren的田间作业工人中进行了检查。最后，将来自温暖/干燥和凉爽/潮湿生境的白蚁暴露于Metarhizium anisopliae，以确定其对霉菌病的敏感性。4。 PCA表明，巢外的环境成分[环境温度，环境相对湿度（RH），土壤温度和光照]构成了大部分变化（PC1 = 37.5％）。内部变量（巢温度和相对湿度）和巢体积占变异的19.6％（PC2），其中pH占12.9％（PC3）.5。 AIC和回归模型表明，环境温度与免疫变量之间存在最强的正相关关系，相对湿度也可能起一定作用。来自温暖/干燥菌落的白蚁比来自冷/潮湿菌落的白蚁对粘膜分枝杆菌的敏感性较低。6。因此，与来自较凉爽栖息地的白蚁相比，筑巢在较温暖栖息地的白蚁可能表现出更多的免疫相关措施，并降低了对真菌病的敏感性。

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