To lose is to win: Long-term co-occurrence of two asexual populations realized by a dormant strategy of the inferior competitor

IF 4.6 1区环境科学与生态学 Q1 ECOLOGY Functional Ecology Pub Date : 2024-04-08 DOI:10.1111/1365-2435.14551

Natsumi Maruoka, Kenyu Yamaki, Wataru Makino, Jotaro Urabe

引用次数: 0

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输就是赢：劣势竞争者的休眠策略实现了两个无性种群的长期共存

无性生物无处不在。虽然同属一个物种，具有相同的生态要求，但一个物种中的多个无性基因型往往出现在同一个栖息地。有人提出基因型之间在时间和空间上的利基划分来解释这种现象。然而，这些不同的基因型是否会长期共存尚不清楚。因此，我们研究了一个小山湖中两个无性水蚤基因型（JPN1 和 JPN2）9 年来的种群动态。这两种基因型始终出现在相同的季节和水层中，这表明生态位分区无法解释它们的长期共存。在大多数年份，JPN1 的丰度通常较高。然而，两种基因型在湖泊沉积物中的休眠卵数量却处于同一水平。实验室实验结果表明，JPN1能竞争性地排斥JPN2。然而，许多JPN2个体在JPN1竞争性地将其排除在实验之外之前就已经产生了休眠卵。此外，在含有来自JPN1的拥挤线索的培养基中，竞争劣势的JPN2产生了大量休眠卵，而JPN1则没有这种趋势。这些结果表明，竞争劣势无性基因型可以与竞争优势基因型长期维持一个种群，因为它有能力检测到竞争者的增加，并在被竞争淘汰之前每年产生休眠卵。基于这些结果，我们认为休眠卵生产中基因型对环境变化的特异性反应差异在单一生境中不同无性基因型的长期共存中起着关键作用。在期刊博客上免费阅读本文的通俗摘要。

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来源期刊

Functional Ecology 环境科学-生态学

CiteScore

9.00

自引率

1.90%

发文量

243

审稿时长

4 months

期刊介绍： Functional Ecology publishes high-impact papers that enable a mechanistic understanding of ecological pattern and process from the organismic to the ecosystem scale. Because of the multifaceted nature of this challenge, papers can be based on a wide range of approaches. Thus, manuscripts may vary from physiological, genetics, life-history, and behavioural perspectives for organismal studies to community and biogeochemical studies when the goal is to understand ecosystem and larger scale ecological phenomena. We believe that the diverse nature of our journal is a strength, not a weakness, and we are open-minded about the variety of data, research approaches and types of studies that we publish. Certain key areas will continue to be emphasized: studies that integrate genomics with ecology, studies that examine how key aspects of physiology (e.g., stress) impact the ecology of animals and plants, or vice versa, and how evolution shapes interactions among function and ecological traits. Ecology has increasingly moved towards the realization that organismal traits and activities are vital for understanding community dynamics and ecosystem processes, particularly in response to the rapid global changes occurring in earth’s environment, and Functional Ecology aims to publish such integrative papers.