10.5061/DRYAD.8QB00
Ferrari, Julia
University of York
West, Joan A
University of Maryland, College Park
Via, Sara
University of Maryland, College Park
Godfray, H. Charles J.
University of Oxford
Data from: Population genetic structure and secondary symbionts in
host-associated populations of the pea aphid complex
Dryad
dataset
2011
Symbiosis
Serratia symbiotica
Regiella insecticola
Hamiltonella defensa
Spiroplasma
Coevolution
Rickettsia
Acyrthosiphon pisum
2011-07-28T15:00:55Z
2011-07-28T15:00:55Z
en
https://doi.org/10.1111/j.1558-5646.2011.01436.x
118121 bytes
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CC0 1.0 Universal (CC0 1.0) Public Domain Dedication
Polyphagous insect herbivores experience different selection pressures on
their various host plant species. How this affects population divergence
and speciation may be influenced by the bacterial endosymbionts that many
harbor. Here, we study the population structure and symbiont community of
the pea aphid (Acyrthosiphon pisum), which feeds on a range of legume
species and is known to form genetically differentiated host-adapted
populations. Aphids were collected from eight legume genera in England and
Germany. Extensive host plant-associated differentiation was observed with
this collection of pea aphids comprising nine genetic clusters, each of
which could be associated with a specific food plant. Compared to host
plant, geography contributed little to genetic differentiation. The
genetic clusters were differentiated to varying degrees, but this did not
correlate with their degree of divergence in host use. We surveyed the pea
aphid clones for the presence of six facultative (secondary) bacterial
endosymbionts and found they were non-randomly distributed across the
aphid genetic clusters and this distribution was similar in the two
countries. Aphid clones on average carried 1.4 species of secondary
symbiont with those associated with Lathyrus having significantly fewer.
The results are interpreted in the light of the evolution of
specialization and ecological speciation.
aphid genotyping symbiont dataThis file contains data on each aphid clone:
Information on origin: country and plant genus. Information on performance
where applicable: plant species that the aphid clone is specialised on (as
defined in the paper). Haplotypes for each of the nine markers.
Presence/absence for each of the six symbiont species.survival dataThis
file contains the data on survival on the eight test plants for the
English aphid clones.
England
Germany