10.5061/DRYAD.826N0
Szűcs, Marianna
Colorado State University
Melbourne, Brett A.
University of Colorado Boulder
Tuff, Ty
Washington University in St. Louis
Max Planck Institute for the Science of Human History
Weiss-Lehman, Christopher
University of Colorado Boulder
Hufbauer, Ruth A.
Colorado State University
Data from: Genetic and demographic founder effects have long-term fitness
consequences for colonising populations
Dryad
dataset
2017
population founding
Colonisation
Tribolium castaneum
Inbreeding
founder effects
National Science Foundation
https://ror.org/021nxhr62
DEB-0949619, DEB-0949595
2017-03-15T13:43:26Z
2017-03-15T13:43:26Z
en
https://doi.org/10.1111/ele.12743
2011648 bytes
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CC0 1.0 Universal (CC0 1.0) Public Domain Dedication
Colonisation is a fundamental ecological and evolutionary process that
drives the distribution and abundance of organisms. The initial ability of
colonists to establish is determined largely by the number of founders and
their genetic background. We explore the importance of these demographic
and genetic properties for longer term persistence and adaptation of
populations colonising a novel habitat using experimental populations of
Tribolium castaneum. We introduced individuals from three genetic
backgrounds (inbred – outbred) into a novel environment at three founding
sizes (2–32), and tracked populations for seven generations. Inbreeding
had negative effects, whereas outbreeding generally had positive effects
on establishment, population growth and long-term persistence. Severe
bottlenecks due to small founding sizes reduced genetic variation and
fitness but did not prevent adaptation if the founders originated from
genetically diverse populations. Thus, we find important and largely
independent roles for both demographic and genetic processes in driving
colonisation success.
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