10.5061/DRYAD.3885SV0
Lindstedt, Carita
University of Cambridge
Miettinen, Antti
University of Jyväskylä
Freitak, Dalial
University of Helsinki
Ketola, Tarmo
University of Jyväskylä
López-Sepulcre, Andrés
University of Jyväskylä
Mäntylä, Elina
Freie Universität Berlin
Pakkanen, Hannu
University of Jyväskylä
Data from: Ecological conditions alter cooperative behaviour and its costs
in a chemically defended sawfly
Dryad
dataset
2018
Diprion pini
automimicry
antipredator defence
Diprionidae
life-history costs
2018-07-09T14:25:50Z
2018-07-09T14:25:50Z
en
https://doi.org/10.1098/rspb.2018.0466
72140 bytes
1
CC0 1.0 Universal (CC0 1.0) Public Domain Dedication
The evolution of cooperation and social behaviour is often studied in
isolation from the ecology of organisms. Yet, the selective environment
under which individuals evolve is much more complex in nature, consisting
of ecological and abiotic interactions in addition to social ones. Here we
measured the life-history costs of cooperative chemical defence in a
gregarious social herbivore, Diprion pini pine sawfly larvae, and how
these costs vary under different ecological conditions. We ran a rearing
experiment where we manipulated diet (resin content) and attack intensity
by repeatedly harassing larvae to produce a chemical defence. We show that
forcing individuals to allocate more to cooperative defence (high attack
intensity) incurred a clear cost by decreasing individual survival and
potency of chemical defence. Cooperative behaviour and the magnitude of
its costs were further shaped by host plant quality. Number of individuals
participating in group defence, immune responses, and female growth
decreased on a high resin diet under high attack intensity. We also found
some benefits of cheating: non-defending males had higher growth rates
across treatments. Together these results suggest that ecological
interactions can shape the adaptive value of cooperative behaviour and
maintain variation in the frequency of cooperation and cheating.
Grouprearing_early instars_rawdata_Lindstedt et al.2017Data from the
defensive behaviour and potency of the chemical defende during the group
rearing stage of the
experiment.Individual_rearing_later_instars_rawdata_Lindstedt_et_al._2017Data file of life-history traits, defensive behaviour and potency of chemical defence from the individual rearing stage of the experiment.