10.5061/DRYAD.C56KB12
McCulloch, Graham A.
University of Otago
Foster, Brodie J.
University of Otago
Dutoit, Ludovic
University of Otago
Ingram, Travis
University of Otago
Hay, Eleanor
University of Otago
Veale, Andrew J.
University of Otago
Dearden, Peter K.
University of Otago
Waters, Jonathan M.
University of Otago
Data from: Ecological gradients drive insect wing loss and speciation: the
role of the alpine treeline
Dryad
dataset
2019
Altitude
treeline
2019-05-28T13:49:54Z
2019-05-28T13:49:54Z
en
https://doi.org/10.1111/mec.15114
9454788 bytes
1
CC0 1.0 Universal (CC0 1.0) Public Domain Dedication
Alpine ecosystems are frequently characterised by an abundance of
wing-reduced insect species, but the drivers of this biodiversity remain
poorly understood. Insect wing reduction in these environments has
variously been attributed to altitude, temperature, isolation, habitat
stability, or decreased habitat size. We used fine-scale ecotypic and
genomic analyses, along with broad-scale distributional analyses of
ecotypes, to unravel the ecological drivers of wing reduction in the
wing-dimorphic stonefly Zelandoperla fenestrata complex. Altitudinal
transects within populations revealed dramatic wing reduction over very
fine spatial scales, tightly linked to the alpine treeline. Broad
biogeographic analyses confirm that the treeline has a much stronger
effect on these ecotype distributions than altitude per se. Molecular
analyses revealed parallel genomic divergence between vestigial-winged
(high altitude) and full-winged (low altitude) ecotypes across distinct
streams. These data thus highlight the role of the alpine treeline as a
key driver of rapid speciation, providing a new model for ecological
diversification along exposure gradients
stoneflies_GBS1-master (4)Detailed SNP calling procedures and processed
genotypes.
New Zealand