10.5061/DRYAD.HP6N7
Heyworth, Eleanor R.
University of York
Ferrari, Julia
University of York
Data from: Heat stress affects facultative symbiont-mediated protection
from a parasitoid wasp
Dryad
dataset
2017
X-type
defense
Aphidius ervi
Spiroplasma
endosymbiont
Acyrthosiphon pisum
aphid
2017-05-12T13:11:13Z
2017-05-12T13:11:13Z
en
https://doi.org/10.1371/journal.pone.0167180
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CC0 1.0 Universal (CC0 1.0) Public Domain Dedication
Many insects carry facultative bacterial symbionts, which provide benefits
including resistance to natural enemies and abiotic stresses. Little is
known about how these beneficial phenotypes are affected when biotic or
abiotic threats occur simultaneously. The pea aphid (Acyrthosiphon pisum)
can host several well-characterized symbiont species. The symbiont known
as X-type can protect against both parasitoid wasps and heat stress. Here,
we used three pea aphid genotypes that were naturally infected with X-type
and the symbiont Spiroplasma sp. We compared aphids coinfected with these
two symbionts with those cured from X-type and infected with only
Spiroplasma to investigate the ability of X-type to confer benefits to the
host when two threats are experienced simultaneously. Our aim is to
explore how robust symbiont protection may be outside a benign laboratory
environment. Aphids were subjected to heat shock either before or after
attack by parasitoid wasps. Under a benign temperature regime, the aphids
carrying X-type tended to be better protected from the parasitoid than
those cured. When the aphids experienced a heat shock before being
parasitized aphids carrying X-type were more susceptible than those cured.
Regardless of infection with the symbiont, the aphids benefitted from
being heat shocked after parasitization. The results demonstrate how
resistance to parasitoid wasps can be strongly environment-dependent and
that a beneficial phenotype conferred by a symbiont under controlled
conditions in the laboratory does not necessarily equate to a consistently
useful effect in natural populations.
Aphid Survival after exposure to heat and parasitoid attackThe data was
collected in a laboratory experiment that investigated whether the
survival of Acyrthosiphon pisum after attack by the parasitoid Aphidius
ervi was altered by the presence of the endosymbiont X-type or heat
shock.AphidHeatParasitoid.csv
England
United Kingdom