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Multimorph Eco-Evolutionary Dynamics in Structured Populations.
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- Author(s): Lion, Sébastien1 (AUTHOR) ; Boots, Mike2,3 (AUTHOR); Sasaki, Akira4,5 (AUTHOR)
- Source:
American Naturalist. Sep2022, Vol. 200 Issue 3, p345-372. 28p.- Subject Terms:
- Source:
- Additional Information
- Alternate Title: 構造化された集団における複数モルフの生態進化ダイナミクス.
- Abstract: Our understanding of the evolution of quantitative traits in nature is still limited by the challenge of including realistic trait distributions in the context of frequency-dependent selection and ecological feedbacks. We extend to class-structured populations a recently introduced "oligomorphic approximation," which bridges the gap between adaptive dynamics and quantitative genetics approaches and allows for the joint description of the dynamics of ecological variables and of the moments of multimodal trait distributions. Our theoretical framework allows us to analyze the dynamics of populations composed of several morphs and structured into distinct classes (e.g., age, size, habitats, infection status, and species). We also introduce a new approximation to simplify the eco-evolutionary dynamics using reproductive values. We illustrate the effectiveness of this approach by applying it to the important conceptual case of two-habitat migration-selection models. In particular, we show that our approach allows us to predict both the long-term evolutionary end points and the short-term transient dynamics of the eco-evolutionary process, including fast evolution regimes. We discuss the theoretical and practical implications of our results and sketch perspectives for future work. [ABSTRACT FROM AUTHOR]
- Abstract: 自然界における量的形質の進化に関する我々の理解は、頻度依存淘汰と生態学的フィードバックの文脈に、集団の現実的な形質分布を取り入れるという困難な課題によって、依然として強い制約を受けている。我々は、適応力学的アプローチと量的遺伝学的アプローチの間のギャップを埋めるために最近提唱された「オリゴモルフ近似」をクラス構造集団に拡張することによって、生態学的変数と多峰的な形質分布のモーメントの両方の動態を記述することを可能にした。この理論的枠組みにより、年齢、サイズ、生息地、感染状況、種などの異なるクラスに構造化され、複数のモルフからなるような集団の動態解析が可能になる。また、繁殖価を用いて生態進化の動態を単純化する新しい近似を導入する。これらのアプローチの有効性を、2生息地の移動分散と淘汰のモデルという概念的に重要なモデルに適用することによって示す。とりわけ、我々のアプローチが、生態進化過程の長期的な進化の終点と共に、迅速な進化における短期的で過渡的なダイナミクスの両方の予測を可能にすることが示される。最後に我々の結果の理論的、実用的な意味について議論し、今後の研究の展望を述べる。 [ABSTRACT FROM AUTHOR]
- Abstract: Copyright of American Naturalist is the property of University of Chicago and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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