Variation in phenotypic plasticity and selection patterns in blue tit breeding time: between- and within-population comparisons.
Variation in phenotypic plasticity and selection patterns in blue tit breeding time: between- and within-population comparisons.
复制标题
蓝山雀繁殖时间的表型可塑性和选择模式的变化：群体间和群体内的比较。
DOI：
10.1111/j.1365-2656.2012.01996.x
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发表时间：
2012
期刊：
影响因子：
--
通讯作者：
D. Garant
中科院分区：
文献类型：
--
作者：
Mélody Porlier;A. Charmantier;Patrice Bourgault;P. Perret;J. Blondel;D. Garant
1.表型可塑性，即个体表型对其环境的反应，可以使生物体科普环境条件的时空变化。最近的研究表明，个体之间存在着根据环境变化调整其特征的能力差异，这种个体可塑性可能受到强选择的影响。然而，很少有人知道的程度和最终的原因，种群和个体之间的可塑性模式的变化。2.在雀形目中，繁殖时间是一个与适应性密切相关的关键生活史特征，并且已知会随环境而变化，但很少有研究调查个体可塑性的种内变化。3.在这里，我们研究了种群间和种群内的变化，在繁殖时间，表型可塑性和选择模式，这一特点在四个地中海种群的蓝山雀（Cyanistes caeruleus）繁殖的栖息地不同的结构和质量。4.虽然在研究过程中没有明显的变暖，但我们发现所有种群在温暖的年份都有较早的繁殖开始的证据，在不可预测的环境中可塑性降低。四个群体中有两个群体的产蛋期可塑性存在显著的个体间变异。有趣的是，选择更早的产卵日期是显着的，只有在人群中，没有个体间的可塑性差异。5.我们的研究结果表明，同一物种的种群之间的可塑性模式的泛化可能是具有挑战性的，即使在一个小的空间尺度和表型可塑性的个体内的变化量可能与选择压力作用于这些表型性状。
1. Phenotypic plasticity, the response of individual phenotypes to their environment, can allow organisms to cope with spatio-temporal variation in environmental conditions. Recent studies have shown that variation exists among individuals in their capacity to adjust their traits to environmental changes and that this individual plasticity can be under strong selection. Yet, little is known on the extent and ultimate causes of variation between populations and individuals in plasticity patterns. 2. In passerines, timing of breeding is a key life-history trait strongly related to fitness and is known to vary with the environment, but few studies have investigated the within-species variation in individual plasticity. 3. Here, we studied between- and within-population variation in breeding time, phenotypic plasticity and selection patterns for this trait in four Mediterranean populations of blue tits (Cyanistes caeruleus) breeding in habitats varying in structure and quality. 4. Although there was no significant warming over the course of the study, we found evidence for earlier onset of breeding in warmer years in all populations, with reduced plasticity in the less predictable environment. In two of four populations, there was significant inter-individual variation in plasticity for laying date. Interestingly, selection for earlier laying date was significant only in populations where there was no inter-individual differences in plasticity. 5. Our results show that generalization of plasticity patterns among populations of the same species might be challenging even at a small spatial scale and that the amount of within-individual variation in phenotypic plasticity may be linked to selective pressures acting on these phenotypic traits.