Impacts of environmental variability on desiccation rate, plastic responses and population dynamics of Glossina pallidipes
Impacts of environmental variability on desiccation rate, plastic responses and population dynamics of Glossina pallidipes
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环境变化对舌蝇干燥率、塑料反应和种群动态的影响
DOI：
10.1111/jeb.12297
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发表时间：
2014
影响因子：
2.1
通讯作者：
J. Terblanche
中科院分区：
文献类型：
--
作者：
E. Kleynhans;S. Clusella‐Trullas;J. Terblanche
对瞬态条件的生理反应可能导致代价高昂的反应，而几乎没有健身益处，因此，必须在反应速度和暴露于新条件的持续时间之间进行权衡。在这里，使用蛹的一个重要的昆虫疾病的载体，Glossina pallidipes，我们研究这种潜在的权衡使用一种新的组合的实验方法和种群动力学模型。具体而言，我们使用实验方法探索和剖析了塑性生理反应、治疗持续时间和强度之间的相互作用。然后，我们将这些来自生物体水平衡数据的实验结果及其塑性响应整合到种群动力学模型中，以研究模拟瞬态天气条件对种群增长率的潜在相对适应性影响。结果表明，水分损失率（WLR）的可塑性和新环境条件的持续时间的预测权衡的证据。当改变的环境条件持续较长时间时，生理反应可以匹配新的环境条件，这导致较低的WLR和较低的种群下降率。然而，在较短的时间尺度上，驯化持续时间和生理反应之间的不匹配反映为总体种群增长率降低。这可能表明由于没有足够的时间进行生理调整而导致的潜在健身成本。因此，这项工作的结果表明，塑料水平衡响应既有成本又有效益，这取决于环境条件变化的时间尺度和幅度。这些结果对于理解环境变异背景下塑料生理反应的演变和种群丰度的变化具有重要意义。
Physiological responses to transient conditions may result in costly responses with little fitness benefits, and therefore, a trade‐off must exist between the speed of response and the duration of exposure to new conditions. Here, using the puparia of an important insect disease vector, Glossina pallidipes, we examine this potential trade‐off using a novel combination of an experimental approach and a population dynamics model. Specifically, we explore and dissect the interactions between plastic physiological responses, treatment‐duration and ‐intensity using an experimental approach. We then integrate these experimental results from organismal water‐balance data and their plastic responses into a population dynamics model to examine the potential relative fitness effects of simulated transient weather conditions on population growth rates. The results show evidence for the predicted trade‐off for plasticity of water loss rate (WLR) and the duration of new environmental conditions. When altered environmental conditions lasted for longer durations, physiological responses could match the new environmental conditions, and this resulted in a lower WLR and lower rates of population decline. At shorter time‐scales however, a mismatch between acclimation duration and physiological responses was reflected by reduced overall population growth rates. This may indicate a potential fitness cost due to insufficient time for physiological adjustments to take place. The outcomes of this work therefore suggest plastic water balance responses have both costs and benefits, and these depend on the time‐scale and magnitude of variation in environmental conditions. These results are significant for understanding the evolution of plastic physiological responses and changes in population abundance in the context of environmental variability.
影响因子：
14.6
作者：
Martijn Gough
通讯作者：
Martijn Gough
DOI：
10.1093/jhered/90.6.635
发表时间：
1999-11
期刊：
The Journal of heredity
影响因子：
--
作者：
E. Krafsur;DL Wohlford
通讯作者：
E. Krafsur;DL Wohlford
影响因子：
2.2
作者：
Benoit, Joshua B.;Denlinger, David L.
通讯作者：
Denlinger, David L.