Trade-Offs in Cold Resistance at the Northern Range Edge of the Common Woodland Ant Aphaenogaster picea (Formicidae)
Trade-Offs in Cold Resistance at the Northern Range Edge of the Common Woodland Ant Aphaenogaster picea (Formicidae)
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普通林地蚂蚁 Aphaenogaster picea（蚁科）北部边缘抗寒性的权衡
DOI：
10.1086/705939
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发表时间：
2019
期刊：
影响因子：
--
通讯作者：
Ellison, Aaron M.
中科院分区：
文献类型：
--
作者：
Nguyen, Andrew D.;Brown, Megan;Zitnay, Jordan;Cahan, Sara Helms;Gotelli, Nicholas J.;Arnett, Amy;Ellison, Aaron M.
陆地物种极向范围边缘低温的地理变化往往反映了抗寒性的种群变化，这表明范围边界可能是由进化对冷生理的限制所决定的。东北部的林地云杉分布在缅因州中部约45°N。我们结合存在/不存在的调查与分类树分析，以表征其北方的范围限制，并分析了两种措施的抗寒性在不同的时间尺度上运行，以确定是否以及如何边缘人口适应极端环境。A.云杉主要由温度预测，但冬季低温并没有出现作为物种发生的主要相关因素。夏季气温低，季节性变化大，预测没有以上的边界，而高的年平均温度（MAT）预测存在于缅因州南部。相比之下，多个地点的抗寒性测定与范围边缘的局部冷适应假设一致：在种群中，MAT降低2°，寒战昏迷恢复时间减少4分钟。基线电阻和额外的塑性冷硬化能力向相反的方向移动，在最冷的部位硬化能力接近于零。基线电阻和冷硬化能力之间的权衡表明，在范围边缘的人口可能会适应较冷的温度，通过遗传同化的塑料反应，可能会限制进一步的适应和范围的扩大。
Geographic variation in low temperatures at poleward range margins of terrestrial species often mirrors population variation in cold resistance, suggesting that range boundaries may be set by evolutionary constraints on cold physiology. The northeastern woodland antAphaenogaster piceaoccurs up to approximately 45°N in central Maine. We combined presence/absence surveys with classification tree analysis to characterize its northern range limit and assayed two measures of cold resistance operating on different timescales to determine whether and how marginal populations adapt to environmental extremes. The range boundary ofA. piceawas predicted primarily by temperature, but low winter temperatures did not emerge as the primary correlate of species occurrence. Low summer temperatures and high seasonal variability predicted absence above the boundary, whereas high mean annual temperature (MAT) predicted presence in southern Maine. In contrast, assays of cold resistance across multiple sites were consistent with the hypothesis of local cold adaptation at the range edge: among populations, there was a 4-min reduction in chill coma recovery time across a 2° reduction in MAT. Baseline resistance and capacity for additional plastic cold hardening shifted in opposite directions, with hardening capacity approaching zero at the coldest sites. This trade-off between baseline resistance and cold-hardening capacity suggests that populations at range edges may adapt to colder temperatures through genetic assimilation of plastic responses, potentially constraining further adaptation and range expansion.
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影响因子：
2.7
作者：
Wallace GT;Kim TL;Neufeld CJ
通讯作者：
Neufeld CJ
功能价值性状的遗传变异、简单性和进化约束
影响因子：
2.9
作者：
J. Kingsolver;N. Heckman;Jonathan Zhang;P. Carter;Jennifer L. Knies;J. Stinchcombe;K. Meyer
通讯作者：
K. Meyer
影响因子：
56.9
作者：
LEE, RE;CHEN, CP;DENLINGER, DL
通讯作者：
DENLINGER, DL
在两种广泛分布的蚂蚁中，冷昏迷温度沿纬度梯度相似，而冷昏迷恢复时间不同
影响因子：
2.8
作者：
Andrey Maysov
通讯作者：
Andrey Maysov
纬度范围边界的定量遗传结构：变异减少但性状独立性更高
影响因子：
2.9
作者：
Antoine Paccard;J. Van Buskirk;Y. Willi
通讯作者：
Y. Willi