10.5061/DRYAD.5P1Q0
Miller, Sara E.
University of British Columbia
Metcalf, Daniel
University of British Columbia
Schluter, Dolph
University of British Columbia
Data from: Intraguild predation leads to genetically based character
shifts in the threespine stickleback
Dryad
dataset
2015
Selection - Natural
Cottus asper
Gasterosteus aculeatus
2015-10-26T15:08:29Z
2015-10-26T15:08:29Z
en
https://doi.org/10.1111/evo.12811
780176 bytes
1
CC0 1.0 Universal (CC0 1.0) Public Domain Dedication
Intraguild predation is a common ecological interaction that occurs when a
species preys upon another species with which it competes. The interaction
is potentially a mechanism of divergence between intraguild prey
populations, but it is unknown if cases of character shifts in intraguild
prey are an environmental or evolutionary response. We investigated the
genetic basis and inducibility of character shifts in threespine
stickleback from lakes with and without prickly sculpin, a benthic
intraguild predator. Wild populations of stickleback sympatric with
sculpin repeatedly show greater defensive armor and water column height
preference. We lab-raised stickleback from lakes with and without sculpin,
as well as marine stickleback, and found that differences between
populations in armor, body shape, and behavior persisted in a common
garden. Within the common garden, we raised stickleback half-families from
multiple populations in the presence and absence of sculpin. Although the
presence of sculpin induced trait changes in the marine stickleback, we
did not observe an induced response in the freshwater stickleback.
Behavioral and morphological trait differences between freshwater
populations thus have a genetic basis and suggest an evolutionary response
to intraguild predation.
Adult_SpinesMeasurements of armor traits from Adult wild-caught
stickleback. All measurements are made in mm and are not size corrected.
Data from water column assay.Wild_Data.xlsxCommon Garden DataMeasurements
of armor traits from common garden experimental stickleback. All
measurements are made in mm and are not size corrected. Position of
landmarks for body shape. Positional information and distance traveled for
water column assay and shoaling assay.Common_Garden_Data.xlsx