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Citation for Study 16634

About Citation title: "Natural hybridization between genera that diverged from each other approximately 60 million years ago".
About Study name: "Natural hybridization between genera that diverged from each other approximately 60 million years ago".
About This study is part of submission 16634 (Status: Published).

Citation

Rothfels C.J., Johnson A.K., Hovenkamp P.H., Swofford D.L., Roskam H., Fraser-jenkins C.R., Windham M.D., & Pryer K. 2014. Natural hybridization between genera that diverged from each other approximately 60 million years ago. American Naturalist, .

Authors

  • Rothfels C.J. (submitter) Phone 9199078744
  • Johnson A.K.
  • Hovenkamp P.H.
  • Swofford D.L.
  • Roskam H.
  • Fraser-jenkins C.R.
  • Windham M.D.
  • Pryer K.

Abstract

A fern from the French Pyrenees??Cystocarpium roskamianum?is a recently formed intergeneric hybrid between parental lineages that diverged from each other approximately 60 million years ago [95% highest posterior density: 40.2?76.2 mya]. This is an extraordinarily deep hybridization event, roughly akin to an elephant hybridizing with a manatee, or a human with a lemur. In the context of other reported deep hybrids, this finding suggests that populations of ferns, and other plants with abiotically mediated fertilization, may evolve reproductive incompatibilities more slowly, perhaps because they lack many of the premating isolation mechanisms that characterize most other groups of organisms. This conclusion implies that major features of Earth?s biodiversity?such as the relatively small number of species of ferns compared to those of angiosperms?may be, in part, an indirect byproduct of this slower ?speciation clock,? rather than a direct consequence of adaptive innovations by the more diverse lineages.

Keywords

allopolyploidy; deep hybridization; divergence time dating; reproductive isolation, speciation, species selection

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About this resource

  • Canonical resource URI: http://purl.org/phylo/treebase/phylows/study/TB2:S16634
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