10.5061/DRYAD.GM3VR7S
Wang, Ao
University of Toronto
Singh, Amardeep
University of Toronto
Huang, Yuheng
University of Toronto
Agrawal, Aneil F.
University of Toronto
Data from: Ecological specialization in populations adapted to constant
versus heterogeneous environments
Dryad
dataset
2019
specilization
canalization
Generalists
niche breadth
2019-02-28T19:36:56Z
2019-02-28T19:36:56Z
en
https://doi.org/10.1111/evo.13725
291069 bytes
1
CC0 1.0 Universal (CC0 1.0) Public Domain Dedication
Populations vary in their degree of ecological specialization. An
intuitive, but often untested, hypothesis is that populations evolving
under greater environmental heterogeneity will evolve to be less
specialized. How important is environmental heterogeneity in explaining
among-population variation in specialization? We assessed juvenile
viability of 20 Drosophila melanogaster populations evolving under one of
four regimes: (i) a salt-enriched environment, (ii) a cadmium-enriched
environment, (iii) a temporally varying environment, and (iv) a spatially
varying environment. Juvenile viability was tested in both the original
selective environments and a set of novel environments. In both the
original and novel environments, populations from the constant cadmium
regime had the lowest average viability and the highest variance in
viability across environments but populations from the other three regimes
were similar. Our results suggest that variation in specialization among
these populations is most simply explained as a pleiotropic by-product of
adaptation to specific environments rather than resulting from a history
of exposure to environmental heterogeneity.
AllLarvaToAdultDataCounts of number of adults emerged per vial in
"larva to adult" viability assayscad_eggCounts of adults emerged
per replicate from "EGG to adult" viability assay in CADMIUM
assay.salt_eggCounts of number of adults emerged per replicate from
"EGG to adult" viability assay in SALT assay