10.5061/DRYAD.8G59456
Gotanda, Kiyoko M.
McGill University
University of Cambridge
Pack, Amy
McGill University
Leblond, Caroline
McGill University
Hendry, Andrew P.
McGill University
Data from: Do replicates of independent guppy lineages evolve similarly in
a predator-free laboratory environment?
Dryad
dataset
2019
phenotypic trajectory
Parallel evolution
Convergent evolution
Poecilia reticulata
2019-09-11T00:00:00Z
2019-09-11T00:00:00Z
en
https://doi.org/10.1002/ece3.4585
197608 bytes
1
CC0 1.0 Universal (CC0 1.0) Public Domain Dedication
The Trinidadian guppy is emblematic of parallel and convergent evolution,
with repeated demonstrations that predation regime is a driver of adaptive
trait evolution. A classic and foundational experiment in this system was
conducted by John Endler 40 years ago, where male guppies placed into
low-predation environments in the laboratory evolved increased color in a
few generations. However, Endler’s experiment did not employ the now
typical design for a parallel/convergent evolution study, which would
employ replicates of different ancestral lineages. We therefore
implemented an experiment that seeded replicate mesocosms with small
founding populations of guppies originating from high-predation
populations of two very different lineages. The different mesocosms were
maintained identically, and male guppy color was quantified every four
months. After one year, we tested whether male colour had increased,
whether replicates within a lineage had parallel phenotypic trajectories,
and whether the different lineages converged on a common phenotype.
Results showed that male guppy color generally increased through time,
primarily due to changes in melanic color; whereas the other colors showed
inconsistent and highly variable trajectories. Most of the non-parallelism
in phenotypic trajectories was among mesocosms containing different
lineages. In addition to this mixture of parallelism and non-parallelism,
convergence was not evident in that the variance in colour among the
mesocosms actually increased through time. We suggest that our results
reflect the importance of high variation in female preference and founder
effects, both of which could be important in nature.
Colour DataRaw data of male guppy colour quantification2016-05-05 AmyDF.csv