Rapid Changes in the Sex Linkage of Male Coloration in Introduced Guppy Populations
Gordon, S., Lopez Sepulcre, A., Rumbo, D., & Reznick, D. N. (2017). Rapid Changes in the Sex Linkage of Male Coloration in Introduced Guppy Populations. American Naturalist, 189(2), 196-200. https://doi.org/10.1086/689864
Published in
American NaturalistDate
2017Discipline
Ekologia ja evoluutiobiologiaBiologisten vuorovaikutusten huippututkimusyksikköEcology and Evolutionary BiologyCentre of Excellence in Biological Interactions ResearchCopyright
© 2016 by The University of Chicago. Published in this repository with the kind permission of the publisher.
Theory predicts that the sex linkage of sexually selected
traits can influence the direction and rate of evolution and should itself
evolve in response to sex-specific selection. Some studies have found
intraspecific differences in sex linkage associated with differences in
selection pressures, but we know nothing about how fast these differences
can evolve. Here we show that introduced guppy populations
showing rapid evolution of male coloration also show rapid changes
in sex-linkage patterns. A comparison, using hormonal manipulations
in females, of introduced populations of different ages suggests a consistent
increase of autosomal or X-linked coloration 2 years after introduction
from high- to low-predation environments. Twenty years after introduction,
populations already show the same pattern of coloration
inheritance typical of natural low-predation populations in similar
habitats. These results highlight that the contemporary evolution of
sexually selected traits ought to be studied in concert with contemporary
changes in linkage relationships.
...


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