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Social and co-evolutionary dynamics of mating behaviour and parental care

交配行为和父母照顾的社会和共同进化动力学

基本信息

批准号：
NE/I025468/1
负责人：
Nicholas Royle
金额：
$ 54.74万
依托单位：
UNIVERSITY OF EXETER
依托单位国家：
英国
项目类别：
Research Grant
财政年份：
2012
资助国家：
英国
起止时间：
2012 至无数据
项目状态：
已结题

来源：
https://gtr.ukri.org/projects?ref=NE%2FI025468%2F1
关键词：
Social co evolutionary dynamics mating

项目摘要

Mating and parental investment are key factors in determining the life history of an organism. A recent survey of empirical research suggests that despite a long history of interest and investigation, support for predicted relationships between mating behaviour and patterns of parental investment is poor. For example, males are predicted to decrease their parental effort in response to a decrease in their paternity if there are opportunities for higher paternity in the future, and females are expected to choose males based on male traits that indicate his fitness. However, neither of these predictions have firm empirical support. Consequently the explanatory power of the current conceptual framework relies upon post-hoc explanations rather than being able to generate a priori predictions. The likely reason for this is that the components of the relationship between mating and parental care that are important, such as conflict between the sexes over the amount of care to provide and parent-offspring behaviours, have been studied independently without considering their interactions (i.e. without considering social and co-evolutionary feedback loops). To be able to predict the evolution of patterns of mating behaviour and parental investment (and therefore mating systems and the life-histories of organisms) requires an understanding of how the behaviour of each family member is affected by the behaviour of the other members of the family. Here we propose to use artificial selection to test how female mating behaviour co-evolves with male care, trades-off with maternal care and influences parent-offspring relationships. In particular we will examine how these feedback loops affect or interact with the existing genetic correlations between the sexes. Such a co-evolutionary approach is essential to gain a more complete understanding of the dynamics underlying life-history evolution. We will pursue this research in the burying beetle Nicrophorus vespilloides, where we have considerable preliminary and background research on patterns of inheritance, social interactions, and behaviour. Consequently our overall objective is to test experimentally how evolution of repeated mating behaviour of female Nicrophorus vespilloides beetles affects the (co)evolution of traits involved in parental care and mating behaviour. Our proposed work examines the importance of social interactions among individuals in determining the co-evolutionary relationship between mating and parental care behaviours, from which mating systems and associated life-history traits of organisms arise as emergent properties. Our work will therefore form an important stepping stone towards the development of a new paradigm for understanding the evolution of mating systems and life-history traits of organisms based on behavioural interactions among family members.

交配和亲本投资是决定生物体生命史的关键因素。最近的一项实证研究调查表明，尽管人们的兴趣和调查历史悠久，但对交配行为与父母投资模式之间预测关系的支持很少。例如，如果未来有机会获得更高的亲子关系，男性预计会减少为人父母的努力，以应对父子关系的下降，而女性预计会根据表明其健康状况的男性特征来选择男性。然而，这些预测都没有坚实的实证支持。因此，当前概念框架的解释力依赖于事后解释，而不是能够产生先验预测。造成这种情况的可能原因是，交配和父母照顾之间关系的重要组成部分，例如两性之间在提供照顾量和亲子行为方面的冲突，已经被独立研究，没有考虑他们的相互作用（即没有考虑社会和共同进化反馈循环）。为了能够预测交配行为和亲代投资模式的演变（从而预测交配系统和生物体的生命史），需要了解每个家庭成员的行为如何受到家庭其他成员行为的影响。在这里，我们建议使用人工选择来测试雌性交配行为如何与雄性照顾共同进化，如何与母性照顾进行权衡以及如何影响亲子关系。我们将特别研究这些反馈循环如何影响两性之间现有的遗传相关性或与之相互作用。这种共同进化的方法对于更全面地了解生命史进化的动态至关重要。我们将在埋葬甲虫 Nicrophorus vespilloides 中开展这项研究，我们对遗传模式、社会互动和行为进行了大量的初步和背景研究。因此，我们的总体目标是通过实验测试雌性 Nicrophorus vespilloides 甲虫重复交配行为的进化如何影响亲代照顾和交配行为中涉及的特征的（共同）进化。我们提出的工作研究了个体之间的社会互动在确定交配和父母照顾行为之间的共同进化关系中的重要性，其中交配系统和生物体的相关生活史特征作为突现属性而出现。因此，我们的工作将成为开发新范式的重要基石，以基于家庭成员之间的行为相互作用来理解交配系统和生物体生命史特征的进化。