Limited plasticity in the phenotypic variance-covariance matrix for male advertisement calls in the black field cricket, Teleogryllus commodus.
Limited plasticity in the phenotypic variance-covariance matrix for male advertisement calls in the black field cricket, Teleogryllus commodus.
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DOI：
10.1111/jeb.12120
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发表时间：
2013-05
影响因子：
2.1
通讯作者：
Hunt J
中科院分区：
文献类型：
--
作者：
Pitchers WR;Brooks R;Jennions MD;Tregenza T;Dworkin I;Hunt J
表型整合和可塑性是我们理解复杂表型性状如何进化的核心。复杂数量性状的进化变化可以用多变量育种者方程来预测，但这种预测只有在所涉及的矩阵在进化时间内是稳定的情况下才是准确的。然而，最近的工作表明，这些矩阵是时间塑性的，空间可变的，本身也是可演化的。关于表型方差-协方差矩阵（P）稳定性的可用数据很少，并且主要集中在形态性状上。在这里，我们比较了P的结构复杂的性广告呼吁六个不同的异域种群的澳大利亚黑田蟋蟀，Teleogryllus commodus。我们测量了一个子集的电话从野生捕捉蟋蟀从每个人口，然后第二个子集饲养蟋蟀在共同的花园条件下三代。在第二个实验中，来自每个种群的蟋蟀在实验室中以高营养和低营养饮食饲养，并记录它们的叫声。在这两个实验中，我们估计了呼叫特征的P，并使用多种方法对它们进行统计比较（Flury层次结构，几何子空间比较和随机串）。尽管相当大的变化的手段和差异的个人呼叫性状，P的结构在很大程度上是保守的人群之间，跨代和我们的饲养饮食。我们的发现，P保持基本稳定，种群之间和环境条件之间，这表明，选择保留了呼叫性状的结构，以便它们可以作为一个综合单位。
Phenotypic integration and plasticity are central to our understanding of how complex phenotypic traits evolve. Evolutionary change in complex quantitative traits can be predicted using the multivariate breeders’ equation, but such predictions are only accurate if the matrices involved are stable over evolutionary time. Recent work, however, suggests that these matrices are temporally plastic, spatially variable and themselves evolvable. The data available on phenotypic variance-covariance matrix (P) stability is sparse, and largely focused on morphological traits. Here we compared P for the structure of the complex sexual advertisement call of six divergent allopatric populations of the Australian black field cricket, Teleogryllus commodus. We measured a subset of calls from wild-caught crickets from each of the populations and then a second subset after rearing crickets under common-garden conditions for three generations. In a second experiment, crickets from each population were reared in the laboratory on high- and low-nutrient diets and their calls recorded. In both experiments, we estimated P for call traits and used multiple methods to compare them statistically (Flury hierarchy, geometric subspace comparisons and random skewers). Despite considerable variation in means and variances of individual call traits, the structure of P was largely conserved among populations, across generations and between our rearing diets. Our finding that P remains largely stable, among populations and between environmental conditions, suggests that selection has preserved the structure of call traits in order that they can function as an integrated unit.
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影响因子：
2.1
作者：
Bégin, M;Roff, DA
通讯作者：
Roff, DA
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通讯作者：
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影响因子：
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通讯作者：
Higgie, M