10.5061/DRYAD.KN03T
Fragata, Inês
University of Lisbon
Simões, Pedro
University of Lisbon
Lopes-Cunha, Miguel
University of Lisbon
Lima, Margarida
University of Lisbon
Kellen, Bárbara
University of Lisbon
Bárbaro, Margarida
University of Lisbon
Santos, Josiane
University of Lisbon
Rose, Michael R.
University of California, Irvine
Santos, Mauro
University of Barcelona
Matos, Margarida
University of Lisbon
Data from: Laboratory selection quickly erases historical differentiation
Dryad
dataset
2015
Drosophial subobscura
History
Chance
2015-04-10T00:00:00Z
2015-04-10T00:00:00Z
en
https://doi.org/10.1371/journal.pone.0096227
96729 bytes
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CC0 1.0 Universal (CC0 1.0) Public Domain Dedication
The roles of history, chance and selection have long been debated in
evolutionary biology. Though uniform selection is expected to lead to
convergent evolution between populations, contrasting histories and chance
events might prevent them from attaining the same adaptive state,
rendering evolution somewhat unpredictable. The predictability of
evolution has been supported by several studies documenting repeatable
adaptive radiations and convergence in both nature and laboratory.
However, other studies suggest divergence among populations adapting to
the same environment. Despite the relevance of this issue, empirical data
is lacking for real-time adaptation of sexual populations with deeply
divergent histories and ample standing genetic variation across
fitness-related traits. Here we analyse the real-time evolutionary
dynamics of Drosophila subobscura populations, previously differentiated
along the European cline, when colonizing a new common environment. By
analysing several life-history, physiological and morphological traits, we
show that populations quickly converge to the same adaptive state through
different evolutionary paths. In contrast with other studies, all analysed
traits fully converged regardless of their association with fitness.
Selection was able to erase the signature of history in highly
differentiated populations after just a short number of generations,
leading to consistent patterns of convergent evolution.
Fecundity, starvation resistance and size dataData from Fecundity,
starvation resistance and body size assays performed on the three
experimental populations and the controls (Ad - Adraga, Mo - Montpellier,
Gro - Groningen, TA - Controls). Assays were performed at generations 6,
11, 14, 18 and 22 of laboratory
adaptation.LaboratoryErasesHistoricalDifferentiation_DRYAD.xlsx
Adraga - Portugal
Montpellier - France
Groningen - Netherlands