Broberg L E, Bradshaw W E
Department of Biology, University of Oregon, Eugene 97403-1210, USA.
J Med Entomol. 1997 Jan;34(1):38-45. doi: 10.1093/jmedent/34.1.38.
Heritable variation for resistance to the parasite Lambornella clarki (Corliss & Coats) by its host Aedes sierrensis (Ludlow) and neutral genetic variation among local Oregon mosquito populations were assessed by selection and allozyme frequencies. L. clarki resistance was significantly greater in a population of mosquitoes normally exposed to this parasite than in an unexposed population. Despite this difference between populations, there was no significant increase in heritable resistance to L. clarki within populations of Ae. sierrensis after 1 generation of laboratory selection. Differentiation estimated from allozyme electrophoresis did not coincide with differentiation in L. clarki resistance in Ae. sierrensis populations at the microgeographic scale. Ae. sierrensis has the capacity to respond to foreign clones of the parasite, but electrophoretic surveys may fail to indicate underlying differences in the parasite resistance of mosquito populations.
通过选择和等位酶频率评估了其宿主内华达伊蚊（Ludlow）对寄生虫克拉克兰博氏鞭毛虫（Corliss & Coats）的抗性的可遗传变异，以及俄勒冈州当地蚊虫种群中的中性遗传变异。正常暴露于这种寄生虫的蚊虫种群对克拉克兰博氏鞭毛虫的抗性显著高于未暴露的种群。尽管种群之间存在这种差异，但在实验室选择1代后，内华达伊蚊种群对克拉克兰博氏鞭毛虫的可遗传抗性并没有显著增加。从等位酶电泳估计的分化与微地理尺度上内华达伊蚊种群对克拉克兰博氏鞭毛虫抗性的分化不一致。内华达伊蚊有能力对寄生虫的外来克隆作出反应，但电泳调查可能无法表明蚊虫种群在寄生虫抗性方面的潜在差异。
