Reproduction is affected by individual breeding experience but not pair longevity in a socially monogamous bird
Reproduction is affected by individual breeding experience but not pair longevity in a socially monogamous bird
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在社会一夫一妻制的鸟类中，繁殖受到个体繁殖经验的影响，但不受配对寿命的影响
DOI：
10.1007/s00265-021-03042-z
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发表时间：
2021
影响因子：
2.3
通讯作者：
Pravosudov, Vladimir V.
中科院分区：
文献类型：
--
作者：
Pitera, Angela M.;Branch, Carrie L.;Sonnenberg, Benjamin R.;Benedict, Lauren M.;Kozlovsky, Dovid Y.;Pravosudov, Vladimir V.
在社会性一夫一妻制的动物中，多年来保持稳定的交配对被认为会导致更高的繁殖成功率。然而，先前的个体繁殖经验可能独立地影响繁殖成功，而不考虑配对的稳定性。我们在内华达山脉考察了群居一夫一妻制的山地山雀Poecile Gambeli的配对组成、配对寿命和繁殖之间的关系。在前几年一起繁育的有经验的繁殖者对和新形成的繁殖者对之间，任何繁殖参数都没有显著差异。其中双方都有经验的配对比第一年繁殖者和有经验和没有经验的混合配对的雏鸟更重。有经验的雌性开始产卵的时间更早，产下的卵子更大，而不考虑她们的社会伴侣以前的繁殖经验。由于所有有经验的鸟类都比没有经验的育种者年龄大，所以观察到的这些群体之间的差异仍然可能是由于年龄而不是繁殖经验。总体而言，我们的数据不支持配对长寿驱动生殖投资的假设。显著声明我们表明，有经验的鸟类的配对长寿与任何繁殖参数都没有显著的关联。相反，我们检测到与以前的繁殖经验或年龄(第一年繁育者与年长的有经验的繁育者)相关的个体水平的繁殖特征与更早的繁殖、更大的窝点和更重的雏鸟有关。虽然目前还不清楚年龄、繁殖经验或两者是否都会影响观察到的生殖投资差异，但我们的结果确实表明，在相对短暂的社会一夫一妻制物种中，配对寿命可能不是生殖投资的关键决定因素。
In socially monogamous animals, maintaining stable mating pairs across years has been hypothesized to result in increased reproductive success. However, previous individual breeding experience may independently affect reproductive success, regardless of pair stability. We examined associations between pair composition based on previous breeding experience, pair longevity, and reproduction in socially monogamous mountain chickadees,Poecile gambeli, in the Sierra Nevada. There were no significant differences in any reproductive parameters between pairs of experienced breeders that had bred together in previous years and those that were newly formed. Pairs in which both partners were experienced had heavier nestlings than both first-year breeders and mixed experienced–inexperienced pairs. Experienced females started laying eggs earlier and laid larger clutches regardless of their social mate’s previous breeding experience. As all experienced birds were older than inexperienced breeders, it remains possible that observed differences between these groups were due to age rather than breeding experience. Overall, our data did not support the hypothesis that pair longevity drives reproductive investment.Significance statementWe showed that pair longevity in birds with previous experience had no significant association with any reproductive parameters. Instead, we detected that individual-level characteristics related to either previous breeding experience or age (first-year breeders vs. older, experienced breeders) were associated with earlier breeding, larger clutch size, and heavier nestlings. While it remains unclear whether age, breeding experience, or both influence the observed differences in reproductive investment, our results do suggest that pair longevity may not be a critical determinant of reproductive investment in a relatively short-lived, socially monogamous species.
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影响因子：
2.3
作者：
Benedict, L. M.;Pitera, A. M.;Pravosudov, V. V.
通讯作者：
Pravosudov, V. V.
影响因子：
2.6
作者：
Wiley EM;Ridley AR
通讯作者：
Ridley AR
东部霸王鸟的性别角色、亲代经历和繁殖成功率
影响因子：
2.5
作者：
J. D. Woodard;M. T. Murphy
通讯作者：
M. T. Murphy
影响因子：
2.3
作者：
Branch, Carrie L.;Pitera, Angela M.;Pravosudov, Vladimir V.
通讯作者：
Pravosudov, Vladimir V.
DOI：
10.1098/rspb.2013.2843
发表时间：
2014-07-07
影响因子：
4.7
作者：
Sanchez-Macouzet, Oscar;Rodriguez, Cristina;Drummond, Hugh
通讯作者：
Drummond, Hugh