10.5061/DRYAD.JC0DF
James, Patrick M. A.
University of Montreal
Cooke, Barry
Canadian Forest Service
Brunet, Bryan
University of Alberta
Lumley, Lisa
University of Alberta
Sperling, Felix
University of Toronto
Fortin, Marie-Josée
University of Toronto
Quinn, Vanessa S.
Purdue University
Sturtevant, Brian R.
Northern Research Station
Brunet, Bryan M. T.
University of Alberta
Lumley, Lisa M.
University of Alberta
Sperling, Felix A. H.
University of Alberta
Data from: Life-stage differences in spatial genetic structure in an
irruptive forest insect: implications for dispersal and spatial synchrony
Dryad
dataset
2014
spruce budworm
Choristoneura fumiferana
Multivariate analysis
cyclic populations
2014-12-03T19:19:44Z
2014-12-03T19:19:44Z
en
https://doi.org/10.1111/mec.13025
53263 bytes
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CC0 1.0 Universal (CC0 1.0) Public Domain Dedication
Dispersal determines the flux of individuals, energy, and information and
is therefore a key determinant of ecological and evolutionary dynamics.
Yet, it remains difficult to quantify its importance relative to other
factors. This is particularly true in cyclic populations in which
demography, drift, and dispersal contribute to spatio-temporal variability
in genetic structure. Improved understanding of how dispersal influences
spatial genetic structure is needed to disentangle the multiple processes
that give rise to spatial synchrony in irruptive species. In this study,
we examined spatial genetic structure in an economically important
irruptive forest insect, the spruce budworm (Choristoneura fumiferana) to
better characterize how dispersal, demography, and ecological context
interact to influence spatial synchrony in a localized outbreak. We
characterized spatial variation in microsatellite allele frequencies using
231 individuals and 7 geographic locations. We show that: (1) gene flow
among populations is likely very high (Fst ≈ 0); (2) despite an overall
low level of genetic structure, important differences exist between adult
(moth) and juvenile (larvae) life-stages; and (3) the localized outbreak
is the likely source of moths captured elsewhere in our study area. This
study demonstrates the potential of using molecular methods to distinguish
residents from migrants and for understanding how dispersal contributes to
spatial synchronization. In irruptive populations, the strength of genetic
structure depends on the timing of data collection (e.g., trough vs.
peak), location, and dispersal. Taking into account this ecological
context allows us to make more general characterizations of how dispersal
can affect spatial synchrony in irruptive populations.
SBW GenotypesThis file contains the genotype data for the full set of 231
individuals over 28 microsatellite loci. Further details on loci and
groupings can be found in the
paper.GenotypeData_1.txtMetaData_FOR_GenotypeData_1Metadata for SBW
genotypes that includes geographic location of each sample site.
Minnestoa (USA)
Ontario (Canada)
Minnesota (USA)