The role of indirect genetic effects in the evolution of interacting reproductive behaviors in the burying beetle, Nicrophorus vespilloides.
The role of indirect genetic effects in the evolution of interacting reproductive behaviors in the burying beetle, Nicrophorus vespilloides.
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间接遗传效应在埋葬甲虫 Nicrophorus vespilloides 相互作用生殖行为进化中的作用。
DOI：
10.1002/ece3.4731
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发表时间：
2019
影响因子：
2.6
通讯作者：
Carter MJ
中科院分区：
文献类型：
--
作者：
Carter MJ
社会相互作用可以引起间接遗传效应（IGEs），当一个个体中表达的基因影响另一个个体的表型时，就会发生这种效应。当存在IGE时，性状的进化动力学可以改变。性通常涉及一阶（当前）或二阶（先前）社会互动产生的间接影响，但IGE很少被量化为生殖行为。在这里，我们使用实验种群的埋葬甲虫，经历了双向选择交配率测试社会可塑性和IGEs与焦点男性交配与女性无论是没有（一阶效应）或（二阶效应）之前暴露于竞争对手，和资源防御行为（一阶效应）。检测到与雌性（一级）相互作用产生的交配率的加性IGE。对于资源防御行为，标准方差划分分析没有提供任何证据的加性遗传变异，无论是直接或间接的。然而，行为预测的焦点大小相对于竞争对手，大小也是遗传的。假设行为是因果关系依赖于相对大小，这意味着DGE和IGE都发生（并且可能潜在地相互作用）。IGE的相对贡献可能会有所不同的社会行为之间的交配有后果的多变量性状的进化轨迹。
Social interactions can give rise to indirect genetic effects (IGEs), which occur when genes expressed in one individual affect the phenotype of another individual. The evolutionary dynamics of traits can be altered when there are IGEs. Sex often involves indirect effects arising from first‐order (current) or second‐order (prior) social interactions, yet IGEs are infrequently quantified for reproductive behaviors. Here, we use experimental populations of burying beetles that have experienced bidirectional selection on mating rate to test for social plasticity and IGEs associated with focal males mating with a female either without (first‐order effect) or with (second‐order effect) prior exposure to a competitor, and resource defense behavior (first‐order effect). Additive IGEs were detected for mating rate arising from (first‐order) interactions with females. For resource defense behavior, a standard variance partitioning analysis provided no evidence of additive genetic variance—either direct or indirect. However, behavior was predicted by focal size relative to that of the competitor, and size is also heritable. Assuming that behavior is causally dependent on relative size, this implies that both DGEs and IGEs do occur (and may potentially interact). The relative contribution of IGEs may differ among social behaviors related to mating which has consequences for the evolutionary trajectories of multivariate traits.