当前位置: X-MOL 学术Physiol. Entomol. › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Cuticular lipid mass and desiccation rates in Glossina pallidipes: interpopulation variation
Physiological Entomology ( IF 1.5 ) Pub Date : 2007-09-01 , DOI: 10.1111/j.1365-3032.2007.00571.x
Russell Jurenka 1 , John S Terblanche , C Jaco Klok , Steven L Chown , Elliot S Krafsur
Affiliation  

Abstract Tsetse flies, Glossina pallidipes (Diptera: Glossinidae) are said to have strong dispersal tendencies. Gene flow among these populations is estimated to be the theoretical equivalent of no more than one or two reproducing flies per generation, thereby raising the hypothesis of local regimes of natural selection. Flies were sampled from four environmentally diverse locations in Kenya to determine whether populations are homogeneous in desiccation tolerance and cuticular lipids. Cuticular hydrocarbon fractions known to act as sex pheromones do not differ among populations, thereby eliminating sexual selection as an isolating mechanism. Cuticular lipid quantities vary among populations and are not correlated with prevailing temperatures, humidities, and normalized density vegetation indices. Females demonstrate a stronger correlation than males between cuticular lipid mass and body weight. Desiccation rates also vary among populations, but are not correlated with the amounts of cuticular lipid. Chemical analysis of cuticular hydrocarbons by gas chromatography–mass spectroscopy shows that one of the four populations has more 11,15‐ and 11,21‐dimethyl‐31 hydrocarbon on females. These results are discussed in the context of population differences and estimates of gene flow.

中文翻译:

Glossina pallidipes 表皮脂质质量和干燥率:种群间变异

摘要 采采蝇(Glossina pallidipes)(双翅目:舌蝇科)据说有很强的传播倾向。据估计,这些种群之间的基因流动在理论上相当于每代不超过一两只繁殖的果蝇,从而提出了局部自然选择制度的假设。从肯尼亚四个环境不同的地点对苍蝇进行采样,以确定种群在干燥耐受性和表皮脂质方面是否同质。已知充当性信息素的表皮烃馏分在种群之间没有差异,从而消除了作为隔离机制的性选择。表皮脂质数量因种群而异,并且与普遍的温度、湿度和归一化密度植被指数无关。女性在表皮脂质质量和体重之间表现出比男性更强的相关性。干燥率也因人群而异,但与表皮脂质的量无关。通过气相色谱-质谱法对表皮烃的化学分析表明,四个种群中的一个在雌性身上有更多的 11,15- 和 11,21-二甲基-31 烃。这些结果在人口差异和基因流估计的背景下进行了讨论。
更新日期:2007-09-01
down
wechat
bug