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Clownfishes evolution below and above the species level

Artikel i vetenskaplig tidskrift
Författare J. Rolland
Daniele Silvestro
G. Litsios
L. Faye
N. Salamin
Publicerad i Proceedings of the Royal Society of London. Biological Sciences
Volym 285
Nummer/häfte 1873
Sidor 1-9
ISSN 0962-8452
Publiceringsår 2018
Publicerad vid Institutionen för biologi och miljövetenskap
Sidor 1-9
Språk en
Länkar doi.org/10.1098/rspb.2017.1796
Ämnesord macroevolution, microevolution, intraspecific, interspecific, positive selection, RH1, rod visual pigments, g-matrix, adaptive radiation, stabilizing, selection, positive selection, cichlid fishes, deep-sea, macroevolution, microevolution, population, Life Sciences & Biomedicine - Other Topics, Environmental Sciences &, Ecology, Evolutionary Biology
Ämneskategorier Evolutionsbiologi

Sammanfattning

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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