4.7 Article

Clownfishes evolution below and above the species level

出版社

ROYAL SOC
DOI: 10.1098/rspb.2017.1796

关键词

macroevolution; microevolution; intraspecific; interspecific; positive selection; RH1

资金

  1. University of British Columbia [151042]
  2. Swedish Research Council [2015-04748]
  3. Knut and Alice Wallenberg Foundation (Sweden)
  4. University of Lausanne
  5. Swiss National Science Foundation [CRSIII3-147630]
  6. Swedish Research Council [2015-04748] Funding Source: Swedish Research Council

向作者/读者索取更多资源

The difference between rapid morphological evolutionary changes observed in populations and the long periods of stasis detected in the fossil record has raised a decade-long debate about the exact role played by intraspecific mechanisms at the interspecific level. Although they represent different scales of the same evolutionary process, micro-and macroevolution are rarely studied together and few empirical studies have compared the rates of evolution and the selective pressures between both scales. Here, we analyse morphological, genetic and ecological traits in clownfishes at different evolutionary scales and demonstrate that the tempo of molecular and morphological evolution at the species level can be, to some extent, predicted from parameters estimated below the species level, such as the effective population size or the rate of evolution within populations. We also show that similar codons in the gene of the rhodopsin RH1, a light-sensitive receptor protein, are under positive selection at the intra and interspecific scales, suggesting that similar selective pressures are acting at both levels.

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