The quantitative genetic basis of offspring solicitation and parental response in a passerine bird with biparental care
The quantitative genetic basis of offspring solicitation and parental response in a passerine bird with biparental care
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DOI：
10.1098/rspb.2000.1259
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发表时间：
2000-10-22
影响因子：
4.7
通讯作者：
Richner, H
中科院分区：
文献类型：
--
作者：
Kölliker, M;Brinkhof, MWG;Richner, H
亲代投资和后代求偶的共同进化是由亲代和后代基因表达的部分不同的进化利益驱动的。在双亲本养育的物种中，这种冲突的结果可能会很糟糕。由于性别冲突对亲代投入的影响，解决这类家庭冲突的模型对亲代资源供应反应和后代求偶水平的遗传变异和共变作出了迄今未经过检验的假设。通过交叉培养和乞讨回放实验的结合，我们发现，在大山雀（Parus major）中，(i)雏鸟的乞讨叫声强度取决于它们的共同起源，这表明这种乞讨表现存在遗传变异；（ii）只有母亲会通过增加食物供应来回应乞讨叫声；在母系中，亲代应答的大小与雏鸟的央求叫声强度呈正相关，而与父系无关。该研究表明，在预测亲本和后代基因投资冲突的表型结果时，需要考虑遗传共变异，其在母系和父系中的差异表达和/或早期环境和亲本效应。
The coevolution of parental investment and offspring solicitation is driven by partly different evolutionary interests of genes expressed in parents and their offspring. In species with biparental care, the outcome of this conflict ma!: be influenced by the sexual conflict over parental investment, Models for the resolution of such family conflicts have made so far untested assumptions about genetic variation and covariation in the parental resource provisioning response and the level of offspring solicitation. Using a combination of cross-fostering and begging playback experiments, we show that, in the great tit (Parus major), (i) the begging call intensity of nestlings depends on their common origin, suggesting genetic variation for this begging display, (ii) only mothers respond to begging calls by increased food provisioning, and (iii! the size of the parental response is positively related to the begging call intensity of nestlings in the maternal but not paternal line. This study indicates that genetic covariation, its differential expression in the maternal and paternal lines and/or early environmental and parental effects need to be taken into account when predicting the phenotypic outcome of the conflict over investment between genes expressed in each parent and the offspring.