Evolving while invading: rapid adaptive evolution in juvenile development time for a biological control organism colonizing a high-elevation environment.
Evolving while invading: rapid adaptive evolution in juvenile development time for a biological control organism colonizing a high-elevation environment.
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DOI：
10.1111/j.1752-4571.2012.00278.x
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发表时间：
2012-07
影响因子：
4.1
通讯作者：
Ann Starcevich L
中科院分区：
文献类型：
--
作者：
McEvoy PB;Higgs KM;Coombs EM;Karaçetin E;Ann Starcevich L
我们报告的证据，适应性进化的青少年发育时间上的十年时间尺度朱砂蛾Tyria jacobaeae（鳞翅目：Artiidae）殖民新的栖息地和主机从威拉米特谷海岸山脉和瀑布山脉在俄勒冈州。四条证据表明，在山区，较低的温度缩短了生长季节，较短的卵到蛹的幼虫发育时间：（i）野外观察表明，山区人口有较短的物候发育;（ii）一个共同的花园实验揭示了威拉米特谷和山区人口之间的幼虫发育时间与生长季节相关的表型差异的遗传决定;（iii）一个实验室实验饲养后代从父母之间的杂交内和威拉米特谷和瀑布人口表现出多基因遗传，高遗传力，和遗传决定的表型差异的发展时间;和（iv）统计测试，排除随机过程（创始人效应，遗传漂变）有利于自然选择的解释观察到的物候差异。这些结果支持了这一假设，即快速适应凉爽的山区气候发生在人口建立在温暖的山谷气候。我们的研究结果应促使监管机构要求在释放候选生物控制生物体之前对其进化潜力进行评估。
We report evidence of adaptive evolution in juvenile development time on a decadal timescale for the cinnabar moth Tyria jacobaeae (Lepidoptera: Arctiidae) colonizing new habitats and hosts from the Willamette Valley to the Coast Range and Cascades Mountains in Oregon. Four lines of evidence reveal shorter egg to pupa juvenile development times evolved in the mountains, where cooler temperatures shorten the growing season: (i) field observations showed that the mountain populations have shorter phenological development; (ii) a common garden experiment revealed genetic determination of phenotypic differences in juvenile development time between Willamette Valley and mountain populations correlated with the growing season; (iii) a laboratory experiment rearing offspring from parental crosses within and between Willamette Valley and Cascades populations demonstrated polygenic inheritance, high heritability, and genetic determination of phenotypic differences in development times; and (iv) statistical tests that exclude random processes (founder effect, genetic drift) in favor of natural selection as explanations for observed differences in phenology. These results support the hypothesis that rapid adaptation to the cooler mountain climate occurred in populations established from populations in the warmer valley climate. Our findings should motivate regulators to require evaluation of evolutionary potential of candidate biological control organisms prior to release.
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影响因子：
2.2
作者：
HAWKES, RB
通讯作者：
HAWKES, RB
影响因子：
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作者：
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