GENETIC AND ACCLIMATORY VARIATION IN BIOPHYSICAL PROPERTIES OF INSECT CUTICLE LIPIDS
GENETIC AND ACCLIMATORY VARIATION IN BIOPHYSICAL PROPERTIES OF INSECT CUTICLE LIPIDS
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DOI：
10.1073/pnas.88.16.7257
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发表时间：
1991-08-01
影响因子：
11.1
通讯作者：
CROWE, JH
中科院分区：
文献类型：
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作者：
GIBBS, A;MOUSSEAU, TA;CROWE, JH
表皮脂质是昆虫和其他陆生节肢动物水分流失的主要屏障。使用傅里叶变换红外光谱，我们发现黑腹蚱蜢体内这些脂质的熔化温度在个体之间相差超过 10 摄氏度。脂质熔化温度最重要的决定因素是地理人口，其次是家庭影响和饲养方式。相变的宽度也显示出人口和家庭的影响。脂相特性的差异与栖息地温度相关。我们的结果为表皮脂质的遗传性种内变异提供了证据，并对节肢动物水平衡的生理研究具有重要意义。
Epicuticular lipids provide the primary barrier to water loss in insects and other terrestrial arthropods. Using Fourier transform infrared spectroscopy, we found that the melting temperatures for these lipids in the grasshopper Melanoplus sanguinipes varied by over 10-degrees-C between individuals. The most significant determinant of lipid melting temperature was geographic population, followed by family effects and rearing regime. The width of the phase transition also showed population and family effects. Differences in lipid phase properties were correlated with habitat temperature. Our results provide evidence for genetically based intraspecific variation in epicuticular lipids and have important implications for physiological studies of water balance in arthropods.