Competitive ability is a fast-evolving trait between house mouse populations (Mus musculus domesticus).

IF 2.6 2区生物学 Q1 ZOOLOGY

Frontiers in Zoology Pub Date : 2022-12-08 DOI:10.1186/s12983-022-00476-7

Miriam Linnenbrink

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引用次数: 1

Abstract

Background: House mice are commensal animals with a nearly global distribution, structured into well differentiated local populations. Besides genetic differences between the populations, they have also diverged behaviorally over time, whereby it remains open how fast general behavioral characteristics can change. Here we study the competitive potential of two very recently separated populations of the Western house mouse (Mus musculus domesticus) by using two different approaches-one under controlled cage conditions, the other under more natural conditions in enclosures mimicking a secondary encounter condition.

Results: We observe a clear bias in the competitive ability towards one of the populations for both tests. The measured behavioral bias is also reflected in the number of hybrid offspring produced in the enclosures.

Conclusion: Our data suggest that key behavioral characteristics with a direct influence on relative fitness can quickly change during the evolution of populations. It seems possible that the colonization situation in Western Europe, with a rapid spread of the mice after their arrival, would have favored more competitive populations at the expansion front. The study shows the possible impact of behavioral changes on the evolution of populations.

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竞争能力是家鼠种群(小家鼠)之间快速进化的特征。

家鼠是一种几乎全球分布的共生动物，构成了分化良好的地方种群。除了种群间的基因差异外，随着时间的推移，它们的行为也出现了分歧，因此，一般行为特征变化的速度有多快仍是未知数。在这里，我们通过两种不同的方法研究了最近分离的两个西方家鼠(小家鼠)种群的竞争潜力——一种是在受控的笼子条件下，另一种是在更自然的环境中模拟二次相遇条件的围栏中。结果:我们观察到在两个测试中，竞争能力明显偏向于其中一个群体。测量的行为偏差也反映在圈地中产生的杂交后代的数量上。结论:我们的数据表明，在种群进化过程中，直接影响相对适合度的关键行为特征可以迅速改变。在西欧的殖民情况下，老鼠在它们到达后迅速传播，这似乎可能有利于在扩张前沿更具竞争力的种群。这项研究显示了行为变化对种群进化的可能影响。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Frontiers in Zoology ZOOLOGY-

CiteScore

4.90

自引率

0.00%

发文量

审稿时长

>12 weeks

期刊介绍： Frontiers in Zoology is an open access, peer-reviewed online journal publishing high quality research articles and reviews on all aspects of animal life. As a biological discipline, zoology has one of the longest histories. Today it occasionally appears as though, due to the rapid expansion of life sciences, zoology has been replaced by more or less independent sub-disciplines amongst which exchange is often sparse. However, the recent advance of molecular methodology into "classical" fields of biology, and the development of theories that can explain phenomena on different levels of organisation, has led to a re-integration of zoological disciplines promoting a broader than usual approach to zoological questions. Zoology has re-emerged as an integrative discipline encompassing the most diverse aspects of animal life, from the level of the gene to the level of the ecosystem. Frontiers in Zoology is the first open access journal focusing on zoology as a whole. It aims to represent and re-unite the various disciplines that look at animal life from different perspectives and at providing the basis for a comprehensive understanding of zoological phenomena on all levels of analysis. Frontiers in Zoology provides a unique opportunity to publish high quality research and reviews on zoological issues that will be internationally accessible to any reader at no cost. The journal was initiated and is supported by the Deutsche Zoologische Gesellschaft, one of the largest national zoological societies with more than a century-long tradition in promoting high-level zoological research.