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Ecological mechanism of climate‐mediated selection in a rapidly evolving invasive species
Ecology Letters ( IF 8.8 ) Pub Date : 2021-02-07 , DOI: 10.1111/ele.13686
Alexandra A. Mushegian 1 , Naresh Neupane 1 , Zachary Batz 1 , Motoyoshi Mogi 2 , Nobuko Tuno 3 , Takako Toma 4 , Ichiro Miyagi 4 , Leslie Ries 1 , Peter A. Armbruster 1
Affiliation  

Recurring seasonal changes can lead to the evolution of phenological cues. For example, many arthropods undergo photoperiodic diapause, a programmed developmental arrest induced by short autumnal day length. The selective mechanisms that determine the timing of autumnal diapause initiation have not been empirically identified. We quantified latitudinal clines in genetically determined diapause timing of an invasive mosquito, Aedes albopictus, on two continents. We show that variation in diapause timing within and between continents is explained by a novel application of a growing degree day (GDD) model that delineates a location‐specific deadline after which it is not possible to complete an additional full life cycle. GDD models are widely used to predict spring phenology by modelling growth and development as physiological responses to ambient temperatures. Our results show that the energy accumulation dynamics represented by GDD models have also led to the evolution of an anticipatory life‐history cue in autumn.

中文翻译:

迅速发展的入侵物种中气候介导选择的生态机制

周期性的季节性变化可能导致物候学线索的演变。例如,许多节肢动物经历光周期滞育,这是由于秋季天短而引起的程序性发育停滞。尚无经验确定确定秋季滞育开始时间的选择性机制。我们在遗传学上确定了入侵蚊子白纹伊蚊的滞育时间,对纬度进行了定量分析在两大洲。我们显示,大陆之间和大陆之间的滞育时间的变化是由生长度日(GDD)模型的新颖应用解释的,该模型描述了特定于位置的截止日期,在此之后不可能完成额外的完整生命周期。通过将生长和发育建模为对环境温度的生理反应,GDD模型被广泛用于预测春季物候。我们的结果表明,由GDD模型代表的能量积累动力学也导致了预期的生命历史线索在秋天的演变。
更新日期:2021-03-16
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