10.5061/DRYAD.TJ00R
Simmons, Leigh W.
University of Western Australia
Thomas, Melissa L.
University of Western Australia
Gray, Brian
University of Minnesota
Zuk, Marlene
University of Minnesota
Data from: Replicated evolutionary divergence in the cuticular hydrocarbon
profile of male crickets associated with the loss of song in the Hawaiian
archipelago
Dryad
dataset
2014
Population Divergence
chemical signaling
Teleogryllus oceanicus
2014-08-18T15:02:28Z
2014-08-18T15:02:28Z
en
https://doi.org/10.1111/jeb.12478
88196 bytes
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CC0 1.0 Universal (CC0 1.0) Public Domain Dedication
Female choice based on male secondary sexual traits is well documented,
although the extent to which this selection can drive an evolutionary
divergence in male traits among populations is less clear. Male field
crickets Teleogryllus oceanicus attract females using a calling song and
once contacted switch to courtship song to persuade them to mate. These
crickets also secrete onto their cuticle a cocktail of long-chained fatty
acids or cuticular hydrocarbons (CHCs). Females choose among potential
mates based on the structure of male acoustic signals and on the
composition of male CHC profiles. Here, we utilize two naturally occurring
mutations that have arisen independently on two Hawaiian islands and
render the male silent to ask whether the evolutionary loss of acoustic
signalling can drive an evolutionary divergence in the alternative
signalling modality, male CHC profiles. QST-FST comparisons revealed
strong patterns of CHC divergence among three populations of crickets on
the islands of Hawaii, Oahu and Kauai. Contrasts between wild-type and
flatwing males on the islands of Oahu and Kauai indicated that variation
in male CHC profiles within populations is associated with the loss of
acoustic signalling; flatwing males had a relatively low abundance of
long-chained CHCs relative to the short-chained CHCs that females find
attractive. Given their dual functions in desiccation resistance and
sexual signalling, insect CHCs may be particularly important traits for
reproductive isolation and ultimately speciation.
Simmons et. al. -J-Evol-Biol-2014Raw peak areas of cuticular hydrocarbon
compounds found on male crickets using GCMS
Hawaiian Archepeligo