Social Learning and Sexual Selection in Field Crickets

田间蟋蟀的社会学习和性选择

• 批准号: NE/G014906/1
• 负责人: Nathan Bailey
• 金额: $ 34.15万
• 依托单位: University of St Andrews
• 依托单位国家: 英国
• 项目类别: Fellowship
• 财政年份: 2010
• 资助国家: 英国
• 起止时间: 2010 至 无数据
• 项目状态: 已结题
• 来源: https://gtr.ukri.org/projects?ref=NE%2FG014906%2F1
• 关键词: Social; Learning; Sexual; Selection; Field

This proposal addresses a central concept in evolutionary biology regarding the origin and maintenance of biological diversity through sexual selection. Sexual selection via female choice can accelerate reproductive isolation in diverging populations, and its role in driving the elaboration and maintenance of male ornaments is supported theoretically and empirically. All theoretical frameworks for sexual selection rely on the genetic basis of female preferences and male ornaments. However, a number of non-genetic factors have captured the attention of researchers because of their potentially large effects on the strength and direction of sexual selection. One of these has recently gained attention: plasticity in female mate choice. Mate choice is the process by which females evaluate the attractiveness of available males and make a decision about who to mate with. Mate choice plasticity refers to flexibility in individual mating behavior that is influenced by environmental factors. This proposal focuses on how social information learned from conspecifics contributes to such flexibility in mate choice, and I am ultimately interested in how changes in mate choice feed back to alter selection pressure on male traits. My research will use an insect system, because although insects are extensively used as models in sexual selection studies, information about how social learning affects insect mate choice and sexual selection is lacking. I will pursue this fruitful avenue of inquiry using the Polynesian field cricket Teleogryllus oceanicus. I will investigate population-level variation in socially-learned mate choice plasticity, its genetic basis and fitness effects on individuals, and its broader implications for sexual selection pressure on male traits. My postdoctoral work at the University of California, Riverside has established that female crickets can retain information about the attractiveness of calling males and use that information to alter subsequent mating decisions. Given this foundation, my first goal is to investigate the extent to which mate choice plasticity varies on a population-wide scale. Theoretical arguments suggest that founding populations in new environments will be selected to exhibit a greater degree of adaptive phenotypic plasticity. The social environment of newly-founded populations would be expected to vary stochoastically, and I will test the hypothesis that more recently founded populations (inferred using population genetic data) show a greater degree of socially-mediated mate choice plasticity. Second, I will perform a quantitative genetic mating experiment to detect genetic variation in the tendency of females to respond to different social environments by altering their mating behavior. My analysis will detect whether females of different genetic backgrounds show asymmetrical behavioral responses to social experience. This will reveal the potential for selection to act on socially-mediated mate choice plasticity, which depends on the magnitude of additive genetic variation for it. Third, I will examine fitness consequences of socially-mediated mate choice plasticity in the field. This analysis will lend key insights into how social effects alter sexual selection pressure in the wild, which has not been addressed in empirical studies to date. Finally, I will develop quantitative genetic models of sexual selection that incorporate socially-mediated mate choice plasticity, to test how such plasticity alters the outcome of sexual selection. The theoretical models will address the opposing hypotheses that experience-mediated plasticity in mate choice can strengthen vs. weaken sexual selection, and will explore the question of whether selection on mate choice plasticity can drive the evolution of reproductive barriers between populations.

该提案涉及进化生物学中关于通过性选择起源和维持生物多样性的中心概念。通过女性的选择性选择，可以加速生殖隔离在不同的人群中，其在驱动的男性装饰品的制作和维护的作用是支持理论和经验。性选择的所有理论框架都依赖于女性偏好和男性装饰的遗传基础。然而，一些非遗传因素引起了研究人员的注意，因为它们对性选择的强度和方向有潜在的巨大影响。其中之一最近引起了人们的注意：女性择偶的可塑性。择偶是指雌性通过评估现有雄性的吸引力并决定与谁交配的过程。择偶可塑性是指个体择偶行为受环境因素影响的灵活性。这个建议的重点是如何从同种学习的社会信息有助于这种灵活性的配偶选择，我最终感兴趣的是如何在配偶选择的变化反馈到改变男性特征的选择压力。我的研究将使用昆虫系统，因为尽管昆虫被广泛用作性选择研究的模型，但缺乏关于社会学习如何影响昆虫配偶选择和性选择的信息。我将使用波利尼西亚的蟋蟀Teleogryllus oceanicus来探索这一富有成效的研究途径。我将研究群体水平的变化，在社会学习的择偶可塑性，其遗传基础和健身对个人的影响，以及其更广泛的影响，对男性特征的性选择压力。我在加州大学滨江分校的博士后工作证实，雌性蟋蟀可以保留有关鸣叫雄性吸引力的信息，并利用这些信息来改变随后的交配决定。在此基础上，我的第一个目标是调查在人口范围内配偶选择可塑性的变化程度。理论论证表明，在新环境中建立的种群将被选择表现出更大程度的适应性表型可塑性。新成立的人口的社会环境将预计随机变化，我将测试的假设，最近成立的人口（推断使用人口遗传数据）显示更大程度的社会介导的择偶可塑性。其次，我将进行一个定量遗传交配实验，以检测雌性通过改变交配行为对不同社会环境做出反应的倾向的遗传变异。我的分析将检测不同遗传背景的女性是否对社会经验表现出不对称的行为反应。这将揭示潜在的选择作用于社会介导的择偶可塑性，这取决于它的添加剂遗传变异的大小。第三，我将研究健身后果的社会介导的择偶可塑性在该领域。这项分析将为社会效应如何改变野外性选择压力提供关键见解，迄今为止的实证研究尚未解决这一问题。最后，我将开发性选择的定量遗传模型，其中包括社会介导的择偶可塑性，以测试这种可塑性如何改变性选择的结果。理论模型将解决相反的假设，即经验介导的可塑性在择偶可以加强与削弱性选择，并将探讨择偶可塑性的选择是否可以驱动种群之间的生殖障碍的演变的问题。

项目成果

Divergent mechanisms of acoustic mate recognition between closely related field cricket species (Teleogryllus spp.)

• DOI: 10.1016/j.anbehav.2017.06.007
• 发表时间: 2017-08-01
• 期刊: ANIMAL BEHAVIOUR
• 影响因子: 2.5
• 作者: Bailey, Nathan W.;Moran, Peter A.;Hennig, R. Matthias
• 通讯作者: Hennig, R. Matthias

Mate choice plasticity in the field cricket Teleogryllus oceanicus: effects of social experience in multiple modalities

• DOI: 10.1007/s00265-011-1237-8
• 发表时间: 2011-12-01
• 期刊: BEHAVIORAL ECOLOGY AND SOCIOBIOLOGY
• 影响因子: 2.3
• 作者: Bailey, Nathan W.

Socially flexible female choice and premating isolation in field crickets (Teleogryllus spp.).

田间蟋蟀（Teleogryllus spp.）的社会灵活雌性选择和交配前隔离。

• DOI: 10.1111/jeb.12285
• 发表时间: 2014
• 期刊: Journal of evolutionary biology
• 影响因子: 2.1
• 作者: Bailey NW

Tissue-specific transcriptomics in the field cricket Teleogryllus oceanicus.

• DOI: 10.1534/g3.112.004341
• 发表时间: 2013-02
• 期刊: G3 (Bethesda, Md.)
• 作者: Bailey NW;Veltsos P;Tan YF;Millar AH;Ritchie MG;Simmons LW
• 通讯作者: Simmons LW

Detecting cryptic indirect genetic effects.

• DOI: 10.1111/evo.12401
• 发表时间: 2014-07
• 期刊: Evolution; international journal of organic evolution
• 作者: Bailey NW;Hoskins JL
• 通讯作者: Hoskins JL