Repeated species radiations in the recent evolution of the key marine phytoplankton lineage Gephyrocapsa

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書誌事項

公開日
2019-09-17
資源種別
journal article
権利情報
  • https://creativecommons.org/licenses/by/4.0
  • https://creativecommons.org/licenses/by/4.0
DOI
  • 10.1038/s41467-019-12169-7
公開者
Springer Science and Business Media LLC

説明

<jats:title>Abstract</jats:title><jats:p>Phytoplankton account for nearly half of global primary productivity and strongly affect the global carbon cycle, yet little is known about the forces that drive the evolution of these keystone microscopic organisms. Here we combine morphometric data from the fossil record of the ubiquitous coccolithophore genus<jats:italic>Gephyrocapsa</jats:italic>with genomic analyses of extant species to assess the genetic processes underlying Pleistocene palaeontological patterns. We demonstrate that all modern diversity in<jats:italic>Gephyrocapsa</jats:italic>(including<jats:italic>Emiliania huxleyi</jats:italic>) originated in a rapid species radiation during the last 0.6 Ma, coincident with the latest of the three pulses of<jats:italic>Gephyrocapsa</jats:italic>diversification and extinction documented in the fossil record. Our evolutionary genetic analyses indicate that new species in this genus have formed in sympatry or parapatry, with occasional hybridisation between species. This sheds light on the mode of speciation during evolutionary radiation of marine phytoplankton and provides a model of how new plankton species form.</jats:p>

収録刊行物

  • Nature Communications

    Nature Communications 10 (1), 1-, 2019-09-17

    Springer Science and Business Media LLC

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