Extra-pair mating opportunities mediate parenting and mating effort trade-offs in a songbird
Extra-pair mating opportunities mediate parenting and mating effort trade-offs in a songbird
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额外配对的交配机会调节鸣禽的养育和交配努力的权衡
DOI：
10.1093/beheco/arz204
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发表时间：
2020-03
影响因子：
2.4
通讯作者：
Jan Komdeur
中科院分区：
文献类型：
--
作者：
Lei Lv;Zhengwang Zhang;Frank Groenewoud;Sjouke A. Kingma;Jianqiang Li;Marco van der Velde;Jan Komdeur
在双亲照顾的社会一夫一妻制物种中，雄性可能面临提供父母照顾和追求额外配对之间的权衡。“父母-交配权衡”假说预测，高质量的雄性--那些有更大潜力获得额外配对的雄性，例如，体型较大的雄性通常会赢得额外配对的竞争--应该减少父母的照顾，花更多的时间寻找额外配对。然而，养育和交配努力之间的权衡可能会复杂的变化，额外的配对交配机会的可用性。通过使用2010年至2017年在中国中部收集的具有双亲孵化行为的毛冠卷尾（Dicrurus hottentottus）的野外数据，我们测试了雄性质量和父亲照顾之间的潜在负相关关系是否取决于附近可育雌性的数量。我们发现，雄性卷尾雁在孵化期主要寻求额外配对，高质量的个体（长跗的雄性）更有可能产生额外配对的后代。与“父母交配权衡”的假设，高品质的男性孵化孵化之间的潜伏期较长。然而，这只是在附近有足够多的可育雌性提供额外配对交配机会的情况下。女性补偿减少男性护理，但这是独立的男性质量。这表明，高质量的男性护理减少可能是一个直接的反应，而不是促进额外的配对交配机会的女性的差异分配。我们的研究结果表明，个人素质和可用的交配机会可能会塑造父母的照顾和寻求额外的交配男性之间的最佳权衡。概述：个体质量和潜在的额外配偶数量如何影响动物在父母照顾和额外配偶求爱之间的最佳权衡？在毛冠卷尾，高品质的男性，谁是更成功地获得额外的对受精，减少他们的份额在孵化，但只有当他们有足够的额外对交配的机会。女性部分补偿其合作伙伴的孵化减少，但补偿不受男性质量。
In socially monogamous species with bi-parental care, males may face a trade-off between providing parental care and pursuing extra-pair matings. The "parenting-mating trade-off" hypothesis predicts that high-quality males-who have greater potential to gain extra-pair matings, for example, larger males usually win the competition for extra-pair mating-should reduce parental care and spend more time looking for extra-pair matings. However, the trade-off between parenting and mating efforts may be complicated by variation in the availability of extra-pair mating opportunities. By using field data of hair-crested drongos (Dicrurus hottentottus), a species exhibiting bi-parental incubation behavior, collected in central China from 2010 to 2017, we tested whether the potential negative relationship between male quality and paternal care was dependent on the number of nearby fertile females. We found that male drongos mainly seek extra-pair matings during the incubation period and high-quality individuals (males with longer tarsi) are more likely to sire extra-pair offspring. In agreement with the "parenting-mating trade-off" hypothesis, high-quality males incubated less by recessing longer between incubation bouts. However, this was only the case when sufficient fertile females nearby for extra-pair mating opportunities. Females compensated for reduced male care, but this was independent of male quality. This suggests that the reduction in care by high-quality males might be a direct response to extra-pair mating opportunities rather than facilitated by differential allocation of females. Our results indicate that individual quality and available mating opportunities may shape the optimal trade-off between parental care and seeking additional matings for males. Lay Summary: How do individual quality and the number of potential extra-pair mates influence the optimal trade-off between parental care and engaging extra-pair courtship in animals? In hair-crested drongos, high-quality males, who are more successful in obtaining extra-pair fertilizations, reduced their share in incubation, but only when they had sufficient extra-pair mating opportunities. Females partially compensate for the reduced incubation of their partners, but the compensation was not affected by male quality.
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影响因子：
3.3
作者：
J. Merilä
通讯作者：
J. Merilä
毛冠燕鸥在繁殖后拆除巢穴是否会减少潜在的领地竞争？
影响因子：
2.3
作者：
Lei Lv;Jianqiang Li;Sjouke A. Kingma;Chang Gao;Yong Wang;Jan Komdeur;Zhengwang Zhang
通讯作者：
Zhengwang Zhang
影响因子：
2.4
作者：
J. Sanz
通讯作者：
J. Sanz
影响因子：
1.3
作者：
Canal, David;Potti, Jaime;Davila, Jose A.
通讯作者：
Davila, Jose A.
DOI：
10.2307/5712
发表时间：
1994-06
期刊：
--
影响因子：
--
作者：
A. Møller
通讯作者：
A. Møller