Research summary

Eco-evolutionary dynamics: interactions of rapid evolution and ecological processes｜生態-進化動態：迅速な進化と生態学的プロセスの相互作用

Organisms modify their phenotypes flexibly in response to environmental changes. Such rapid adaptation to environments can prevent population decline and extinction. Our laboratory combines mathematical models, microcosm experiments, and meta-analyses to investigate the effects of rapid evolution and phenotypic plasticity on population and community dynamics as well as complex eco-evolutionary feedbacks. Our aim is revealing dynamics of biodiversity through exploring interactions and similarities between intraspecific genetic diversity and species diversity in biological communities.

生物は環境の変動に対応して、柔軟に表現型を変化させていきます。そのような環境への迅速な適応が、個体数の減少や絶滅を防ぐことも起こり得ます。私たちの研究室では、数理モデル解析・培養実験・メタ解析を組み合わせて、迅速な進化や表現型可塑性といった形質の変化が個体数変動・群集構造に及ぼす影響と、進化と生態の間に働く複雑なフィードバックを研究しています。種内の遺伝的多様性と、生物群集内の種多様性の相互作用・類似性を調べることによって、生物多様性の包括的な理解を目指しています。

 Research topics

Theory of eco-evolutionary dynamics｜生態-進化動態の理論

Predator-prey population cycles｜捕食者-被食者個体群サイクル

Yamamichi et al. 2011 Am. Nat., 2014 Ecology, 2019 Ecol. Lett., Yamamichi 2022 Phil. Trans. R. Soc. B

Evolutionary rescue/suicide｜進化的救助／自殺

Yamamichi et al. 2015 Evol. Appl., Cortez & Yamamichi 2019 Ecology, Kasada & Yamamichi 2022 Ecol. Res.

Coevolution｜共進化

Yamamichi & Ellner 2016 Proc. R. Soc. B, Yamamichi et al. 2019 Popul. Ecol.

Species coexistence｜種共存

Yamamichi et al. 2020 Trends Ecol. Evol., Yamamichi & Letten 2021 Ecol. Lett., 2022 J. Anim. Ecol., Yamamichi et al. 2022, 2023 Ecol. Lett., 2023 Popul. Ecol., Morita & Yamamichi 2023 Popul. Ecol., in revision

Community and ecosystem dynamics｜群集・生態系動態

Matthews et al. 2011 Ecol. Lett., Toju et al. 2017 Nat. Ecol. Evol.

Experiments of eco-evolutionary dynamics｜生態-進化動態の実験

Predator-prey population cycles｜捕食者-被食者個体群サイクル

Kasada et al. 2014 PNAS

Evolutionary rescue｜進化的救助

Kawaguchi & Yamamichi submitted, Shibasaki & Yamamichi in prep.

Population genetics｜集団遺伝学

Speciation｜種分化

Yamamichi et al. 2012 Mol. Biol. Evol., Yamamichi & Sasaki 2013 Evolution

Local adaptation｜局所適応

Yamamichi & Innan 2012 Heredity, Tezuka et al. 2014 Heredity

Genetic polymorphism｜遺伝的多型

Sato et al. 2015 Curr. Biol., Yamamichi & Hoso 2017 Evolution, Yamamichi et al. 2019 Theor. Ecol., 2023 Ecol. Lett., Otake et al. 2024 Proc. R. Soc. B

Other topics｜その他のトピック

Reproductive interference｜繁殖干渉

Schreiber et al. 2019 Ecology, Yamamichi & Koizumi 2020 Ecol. Res.

Gleaner-opportunist trade-off and relative nonlinearity｜落穂拾い-日和見主義者トレードオフと相対的非線形性

Letten & Yamamichi 2021 PNAS, Letten et al. in revision

Shading and lake ecosystems｜遮光と湖沼生態系

Yamamichi et al. 2018 Proc. R. Soc. B, Kazama et al. 2021 Commun. Biol., Hirama et al. 2022 Front. Ecol. Evol.

Microbiome｜微生物群集

Toju et al. 2018 Nat. Plants, Fujita et al. 2023 Microbiome, 2023a, 2023b Front. Microbiol.

Food web｜食物網

Yen et al. 2015 J. Anim. Ecol.

Foraging behavior｜採餌行動

Adachi et al. 2017 Funct. Ecol.

Evolution in stage-structured mutualism｜構造のある相利共生の進化

Nakazawa et al. 2023 Front. Ecol. Evol.

Language barriers｜言語障壁

Arenas-Castro et al. 2024 Proc. R. Soc. B