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首页> 外文期刊>Annales Zoologici Fennici >From mating to laying: genetic and environmental variation in mating dates and prelaying periods of female pied flycatchers Ficedula hypoleuca
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From mating to laying: genetic and environmental variation in mating dates and prelaying periods of female pied flycatchers Ficedula hypoleuca

机译：从交配到产卵：雌性捕蝇fly的交配日期和预产期的遗传和环境变异

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摘要

The duration of the period comprised between mating and the onset of laying and its correlates and consequences for aspects of female breeding performance are investigated in a population of pied flycatchers studied for 5 years. That duration may represent a compromise between the selective pressure on females to breed as early as possible and the need for females attempting to breed to be in prime nutritional condition. It is shown that the duration of the prelaying period is shorter for late breeders, but is apparently unrelated to subsequent condition of the female and indices of breeding performance. A low, significant between-year repeatability (R=0.16) in the duration of female prelaying period was detected. However, there was a large component of environmental, as opossed to genetic, variation which may reflect stochasticity affecting timing of breeding and age factors. Overall, the evidence supports models of strategic adjustment of breeding date to offspring prospects, rather than those based on condition-constrained breeding date.
机译：在研究了5年的studied蝇种群中，研究了从交配到开始产卵之间的持续时间，以及与雌性繁殖性能相关的影响。该持续时间可能代表着对雌性的选择压力，要求其尽早繁殖，而对雌性进行繁殖以使其处于主要营养状况的需求。结果表明，对于后期育种者而言，预育期的持续时间较短，但显然与雌性随后的状况和育种性能指标无关。在女性预产期中，检测到的年间重复性较低（R = 0.16）。然而，与遗传相反，环境中有很大一部分变化可能反映了随机性，从而影响了繁殖时间和年龄因素。总体而言，证据支持战略调整育种日期以适应后代前景的模型，而不是基于条件受限的育种日期的模型。

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