Male synchrony: individual variation, epigenetic drivers and the overall effect on reproductive success in multilevel alliances of wild dolphins

雄性同步性:野生海豚多级联盟中的个体变异、表观遗传驱动因素以及对繁殖成功的总体影响

基本信息

  • 批准号:
    EP/X021394/1
  • 负责人:
  • 金额:
    $ 24.26万
  • 依托单位:
  • 依托单位国家:
    英国
  • 项目类别:
    Fellowship
  • 财政年份:
    2023
  • 资助国家:
    英国
  • 起止时间:
    2023 至 无数据
  • 项目状态:
    未结题

项目摘要

Group-living animals express a wide range of social behaviours to attract mates, confront competitors and cooperate with allies toincrease Darwinian fitness. Group members differ from each other in characteristics such as age or sex, but also in their ability toengage in social behaviours. Inter-individual variation in social behaviours has been proven challenging to investigate in the wild andis potentially driven by gene expression and physiological mechanisms, shaped by the environment and an individual's experience.Synchronous displays are social behaviours, hallmarks of many animal societies, with well known examples including male lancetailedmanakins, fiddler crabs and katydids which all express coordinated behaviours. Individuals that engage in such synchronousdisplays may differ in their abilities to synchronise with group mates, but it is hard to track such differences. The above-mentionedexamples are driven by female choice and male competition. However, in humans the causes of synchrony are strongly linked tocooperation. Male dolphins also synchronize motor and acoustic displays and cooperate in the pursuit of females, with someindividuals potentially being capable of more precise coordination. Such synchrony in dolphins may have evolved to promote withinalliance social bonding and cooperation in a context where males need to work together to herd a female and defend her from rivals,yet they are also competing for an indivisible resource (fertilization). This project will determine whether more precise motor andacoustic synchrony in wild male bottlenose dolphins leads to increased reproductive success and investigate patterns of DNAmethylation in males that vary in their level of coordinated behaviour. Combining behavioural and bioinformatic analysis will shedlight on the drivers and effects of behavioural variation on fitness, and will determine if synchrony is an adaptive feature ofcoalitionary behaviour that is not limited to humans.
群居动物表达了广泛的社会行为,以吸引配偶,对抗竞争对手和与盟友合作,以提高达尔文的适应性。群体成员在年龄或性别等特征上各不相同,而且在参与社会行为的能力上也各不相同。社会行为的个体间差异已被证明在野外调查具有挑战性,并且可能受到基因表达和生理机制的驱动,受环境和个人经历的影响。同步展示是一种社会行为,是许多动物社会的标志,众所周知的例子包括雄性长尾猿、招潮蟹和蝈蝈,它们都表现出协调的行为。参与这种同步展示的个体可能在与群体同伴同步的能力上有所不同,但很难追踪这种差异。上述例子是由女性的选择和男性的竞争驱动的。然而,在人类中,同步的原因与合作密切相关。雄性海豚也会同步运动和声音显示,并在追求雌性时合作,有些个体可能具有更精确的协调能力。海豚的这种同步性可能是为了促进联盟内部的社会联系和合作而进化的,在这种情况下,雄性需要一起工作来驱赶雌性并保护她免受竞争对手的侵害,但它们也在争夺不可分割的资源(受精)。该项目将确定野生雄性宽吻海豚更精确的运动和声音同步是否会增加繁殖成功率,并调查雄性海豚在协调行为水平上的不同dna甲基化模式。结合行为学和生物信息学分析将揭示行为变异对适应度的驱动因素和影响,并将确定同步性是否是不局限于人类的联盟行为的适应性特征。

项目成果

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