Ecology & Evolution of Sexual Selection
生态
基本信息
- 批准号:RGPIN-2016-06133
- 负责人:
- 金额:$ 2.04万
- 依托单位:
- 依托单位国家:加拿大
- 项目类别:Discovery Grants Program - Individual
- 财政年份:2016
- 资助国家:加拿大
- 起止时间:2016-01-01 至 2017-12-31
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
Sexual selection is a powerful agent of evolutionary change, as non-random mating increases individual variation in reproductive success, thereby altering the frequencies of alleles passed on from one generation to the next. While sexual selection is commonly associated with the evolution of elaborate morphological, behavioural and physiological traits in males, as well as preferences for some of these traits in females, there is a great deal that we still do not understand about its operation, and its short-and long-term impact on species adaptation & evolution.
The current proposal integrates behavioural, ecological, evolutionary & genetic techniques to test hypotheses in 2 (not-mutually exclusive) areas of research: (1) the continued & expanded study of the causes & consequences of variation in female mate preferences; (2) tests of whether sexual selection is complementary or antagonistic to natural selection. Our research will use 2 species of fruit flies: D. melanogaster, which has served extensively as a model for courtship/mating behaviour & in which a number of powerful genetic tools are available; and the spotted-wing fly, D. suzukii, an invasive (& economically destructive) species.
Area 1: While models of sexual selection assume, either implicitly or explicitly, that females all exhibit the same preferences for male traits, in reality, females often differ in their attraction towards prospective males. Inter-individual variation for mates alters the strength &/or direction of sexual selection, thereby altering a species’ evolutionary trajectory. Despite its potential importance, variation in female mate choice has been largely overlooked. Over the next 5yrs we shall continue exploring the genetic & environmental factors contributing to this variation, & the impact of variation to lifetime reproductive success in both males & females. We shall test whether individual preference variation is due to the multitude of different (& possibly conflicting) signals presented by prospective mates. Using experimental evolution, we shall measure how female preferences evolve in response to manipulated costs/benefits of mating.
Area 2: The question whether, sexual selection promotes or impedes adaptive evolution is contentious. If traits favoured by sexual selection are signals of overall “quality”, then non-random mating will complement natural selection. However, if traits that increase individual reproductive success come at a cost of survival (or to members of the opposite sex), then natural & sexual selection will act in opposition, thereby interfering with the ability of species to adapt to their environment. We plan to test this empirically testing this using experimental evolution using Drosophila sp. as the opportunity (& intensity) of sexual selection, as well as the environment, can be easily manipulated, & meaningful measurements of individual fitness can be made.
性选择是进化变化的有力推动者,因为非随机交配增加了生殖成功的个体差异,从而改变了从一代传递到下一代的等位基因频率。虽然性选择通常与男性复杂的形态,行为和生理特征的进化有关,以及女性对其中一些特征的偏好,但我们仍然不了解它的运作,以及它对物种适应和进化的短期和长期影响。
目前的建议整合了行为,生态,进化和遗传技术,以测试两个研究领域的假设(不相互排斥):(1)继续和扩大研究的原因和女性择偶偏好的变化的后果;(2)测试性选择是否是补充或对抗自然选择。我们的研究将使用2种果蝇:D。melanogaster,它已经广泛地作为求偶/交配行为的模型,其中有许多强大的遗传工具; Suzukii,一种入侵性(经济破坏性)物种。
区域1:虽然性选择模型或隐或显地假设女性对男性特征表现出相同的偏好,但实际上,女性对未来男性的吸引力往往不同。配偶的个体间变异改变了性选择的强度和/或方向,从而改变了物种的进化轨迹。尽管其潜在的重要性,女性择偶的差异在很大程度上被忽视了。在接下来的5年里,我们将继续探索导致这种变异的遗传和环境因素,以及变异对男性和女性一生生殖成功的影响。我们将测试个体偏好的变化是否是由于潜在配偶提供的大量不同(可能是相互冲突的)信号。使用实验进化,我们将测量女性的偏好如何演变,以应对操纵成本/交配的好处。
领域2:性选择是否促进或阻碍适应性进化的问题是有争议的。如果性选择偏好的特征是整体“质量”的信号,那么非随机交配将补充自然选择。然而,如果增加个体繁殖成功率的特征是以生存(或异性成员)为代价的,那么自然选择和性选择就会起相反的作用,从而干扰物种适应环境的能力。我们计划使用果蝇的实验进化来经验性地测试这一点,因为性选择的机会(和强度)以及环境可以很容易地操纵,并且可以对个体适应性进行有意义的测量。
项目成果
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{{ truncateString('Long, Tristan', 18)}}的其他基金
Female reproductive and behavioural plasticity in response to socio-sexual environment
女性生殖和行为可塑性对社会性环境的反应
- 批准号:
RGPIN-2022-03988 - 财政年份:2022
- 资助金额:
$ 2.04万 - 项目类别:
Discovery Grants Program - Individual
Ecology & Evolution of Sexual Selection
生态
- 批准号:
RGPIN-2016-06133 - 财政年份:2021
- 资助金额:
$ 2.04万 - 项目类别:
Discovery Grants Program - Individual
Ecology & Evolution of Sexual Selection
生态
- 批准号:
RGPIN-2016-06133 - 财政年份:2020
- 资助金额:
$ 2.04万 - 项目类别:
Discovery Grants Program - Individual
Ecology & Evolution of Sexual Selection
生态
- 批准号:
RGPIN-2016-06133 - 财政年份:2019
- 资助金额:
$ 2.04万 - 项目类别:
Discovery Grants Program - Individual
Ecology & Evolution of Sexual Selection
生态
- 批准号:
RGPIN-2016-06133 - 财政年份:2018
- 资助金额:
$ 2.04万 - 项目类别:
Discovery Grants Program - Individual
Ecology & Evolution of Sexual Selection
生态
- 批准号:
RGPIN-2016-06133 - 财政年份:2017
- 资助金额:
$ 2.04万 - 项目类别:
Discovery Grants Program - Individual
Genetic analysis of variation in female preference functions and the consequences for sexual selection
女性偏好函数变异的遗传分析及其对性选择的影响
- 批准号:
402376-2011 - 财政年份:2015
- 资助金额:
$ 2.04万 - 项目类别:
Discovery Grants Program - Individual
Genetic analysis of variation in female preference functions and the consequences for sexual selection
女性偏好函数变异的遗传分析及其对性选择的影响
- 批准号:
402376-2011 - 财政年份:2014
- 资助金额:
$ 2.04万 - 项目类别:
Discovery Grants Program - Individual
Genetic analysis of variation in female preference functions and the consequences for sexual selection
女性偏好函数变异的遗传分析及其对性选择的影响
- 批准号:
402376-2011 - 财政年份:2013
- 资助金额:
$ 2.04万 - 项目类别:
Discovery Grants Program - Individual
Genetic analysis of variation in female preference functions and the consequences for sexual selection
女性偏好函数变异的遗传分析及其对性选择的影响
- 批准号:
402376-2011 - 财政年份:2012
- 资助金额:
$ 2.04万 - 项目类别:
Discovery Grants Program - Individual
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Ecology & Evolution of Sexual Selection
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