10.5061/DRYAD.867TS
Dargent, Felipe
McGill University
Rolshausen, Gregor
McGill University
Hendry, Andrew P.
McGill University
Scott, Marilyn E.
McGill University
Fussmann, Gregor F.
McGill University
Data from: Parting ways: Parasite release in nature leads to sex-specific
evolution of defense
Dryad
dataset
2015
enemy release
Poecilia reticulata
Gyrodactylus turnbulli
2015-09-15T17:04:59Z
2015-09-15T17:04:59Z
en
https://doi.org/10.1111/jeb.12758
19520 bytes
1
CC0 1.0 Universal (CC0 1.0) Public Domain Dedication
We evaluate the extent to which males and females evolve along similar or
different trajectories in response to the same environmental shift.
Specifically, we use replicate experimental introductions in nature to
consider how release from a key parasite (Gyrodactylus) generates similar
or different defense evolution in male versus female guppies (Poecilia
reticulata). After 8-12 generations of evolution, guppies were collected
from the ancestral (parasite still present) and derived (parasite now
absent) populations and bred for two generations in the laboratory to
control for non-genetic effects. These F2 guppies were then individually
infected with Gyrodactylus and infection dynamics were monitored on each
fish. We found that parasite release in nature led to sex-specific
evolutionary responses: males did not show much evolution of resistance,
whereas females showed the evolution of increased resistance. Given that
male guppies in the ancestral population had greater resistance to
Gyrodactylus than did females, evolution in the derived populations led to
reduction of sexual dimorphism in resistance. We argue that previous
selection for high resistance in males constrained (relative to females)
further evolution of the trait. We advocate more experiments considering
sex-specific evolutionary responses to environmental change.
Dargentetal.evolsexesJEBFile includes: individual identifier
("identifier"), names of populations used ("pop"), sex
of individuals ("sex"), years of field sample
("year"), individuals standard length in mm
("startsl"), type of treatment ("type", i.e. sham or
infected=2 G. turnbulli), peak parasite load ("peakpara"),
parasite rate of increase r0 ("ro0to10"), outlier status of the
individual ("outlier"), relative condition index
("startkn"), death during infection ("died"), and last
day in which the individual was counted for parasites ("last
count", i.e. day of death).
Trinidad