累积经验影响社会鱼的竞争投资

IF 2.5 3区 环境科学与生态学 Q2 BEHAVIORAL SCIENCES Behavioral Ecology Pub Date : 2023-09-25 DOI:10.1093/beheco/arad078
Macie D Benincasa, Ryan L Earley, Ian M Hamilton
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引用次数: 0

摘要

当动物长期群居时,发生冲突的可能性很高。冲突是代价高昂的,所以一个人参与冲突的决定取决于他对战斗成本和收益的了解。一个信息来源可能是过去的比赛经验,以前的赢家/输家通常更有可能在未来赢/输。然而,反复的互动可以使个体熟悉冲突,并提供学习成为更好的战士的机会,而不管结果如何。我们探索了个体如何整合以前竞争的信息,以便为群居鱼(Neolamprologus pulcher)的未来相遇提供信息。我们给参赛者单一的、强化的和矛盾的经历,并测量了他们的行为和赛后水中携带的雄激素水平(睾酮,11-酮睾酮)。矛盾的结果与战斗投入的减少有关。更多的战斗经验并没有导致更多的战斗投入,因为连续的损失导致侵略性的减少。此外,战斗处理对水中雄激素浓度没有影响。有趣的是,在行为受经验影响方面存在性别差异,在体重是否与雄激素浓度相关方面也存在性别差异,这可能表明男性和女性在感知战斗能力随比赛经验变化的方式上存在差异。我们的数据揭示了重复的经历可以改变个人投入冲突的倾向的复杂方式。与可预测的行为变化相关的重复互动有助于群体中的等级稳定性,我们的研究结果表明,它们是否以及如何依赖于互动的质量和数量以及性别等个人因素。
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Cumulative experience influences contest investment in a social fish
Abstract When animals live in long-term groups, the potential for conflict is high. Conflict is costly, so an individual’s decision to engage depends on the information it has about the costs and benefits of fighting. One source of information could be past contest experience, where previous winners/losers typically become more likely to win/lose in the future. However, repeated interactions can familiarize individuals with conflict and provide opportunities to learn to become better fighters, regardless of outcome. We explored how individuals integrate information from previous contests to inform future encounters in a group-living fish, Neolamprologus pulcher. We gave contestants single, reinforcing, and contradictory experiences and measured behavior and post-fight water-borne levels of androgenic steroids (testosterone, 11-ketotestosterone). Contradictory outcomes were associated with reduced investment in fighting. More fighting experience did not lead to greater investment in fighting, as consecutive losses resulted in reduced aggression. Also, there was no effect of fighting treatment on water-borne androgen concentrations. Interestingly, there were sex differences in which behaviors were influenced by experience, and in whether body mass was associated with androgen concentrations, which could indicate that males and females vary in how perceived fighting ability changes with contest experience. Our data reveal the complex ways in which repeated experiences can alter an individual’s propensity to invest in conflict. Repeated interactions associated with predictable changes in behavior can contribute to rank stability in groups and our results indicate that whether and how they do depend on the quality and quantity of interactions plus individual factors such as sex.
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来源期刊
Behavioral Ecology
Behavioral Ecology 环境科学-动物学
CiteScore
5.20
自引率
8.30%
发文量
93
审稿时长
3.0 months
期刊介绍: Studies on the whole range of behaving organisms, including plants, invertebrates, vertebrates, and humans, are included. Behavioral Ecology construes the field in its broadest sense to include 1) the use of ecological and evolutionary processes to explain the occurrence and adaptive significance of behavior patterns; 2) the use of behavioral processes to predict ecological patterns, and 3) empirical, comparative analyses relating behavior to the environment in which it occurs.
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