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Sexual selection and population divergence III: interspecific and intraspecific variation in mating signals

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Sexual selection and population divergence III : interspecific and intraspecific variation in mating signals. / Moran, Peter; Hunt, John; Mitchell, Christopher; Ritchie, Michael Gordon; Bailey, Nathan William.

In: Journal of Evolutionary Biology, Vol. 33, No. 7, 07.2020, p. 990-1005.

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Moran, P, Hunt, J, Mitchell, C, Ritchie, MG & Bailey, NW 2020, 'Sexual selection and population divergence III: interspecific and intraspecific variation in mating signals', Journal of Evolutionary Biology, vol. 33, no. 7, pp. 990-1005. https://doi.org/10.1111/jeb.13631

APA

Moran, P., Hunt, J., Mitchell, C., Ritchie, M. G., & Bailey, N. W. (2020). Sexual selection and population divergence III: interspecific and intraspecific variation in mating signals. Journal of Evolutionary Biology, 33(7), 990-1005. https://doi.org/10.1111/jeb.13631

Vancouver

Moran P, Hunt J, Mitchell C, Ritchie MG, Bailey NW. Sexual selection and population divergence III: interspecific and intraspecific variation in mating signals. Journal of Evolutionary Biology. 2020 Jul;33(7):990-1005. https://doi.org/10.1111/jeb.13631

Author

Moran, Peter ; Hunt, John ; Mitchell, Christopher ; Ritchie, Michael Gordon ; Bailey, Nathan William. / Sexual selection and population divergence III : interspecific and intraspecific variation in mating signals. In: Journal of Evolutionary Biology. 2020 ; Vol. 33, No. 7. pp. 990-1005.

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@article{dba30e45e79641c3b8d9bc39ed565995,
title = "Sexual selection and population divergence III: interspecific and intraspecific variation in mating signals",
abstract = "A major challenge for studying the role of sexual selection in divergence and speciation is understanding the relative influence of different sexually selected signals on those processes in both intra‐ and interspecific contexts. Different signals may be more or less susceptible to co‐option for species identification depending on the balance of sexual and ecological selection acting upon them. To examine this, we tested three predictions to explain geographic variation in long‐ versus short‐range sexual signals across a 3,500 + km transect of two related Australian field cricket species (Teleogryllus spp.): (a) selection for species recognition, (b) environmental adaptation and (c) stochastic divergence. We measured male calling song and male and female cuticular hydrocarbons (CHCs) in offspring derived from wild populations, reared under common garden conditions. Song clearly differentiated the species, and no hybrids were observed suggesting that hybridization is rare or absent. Spatial variation in song was not predicted by geography, genetics or climatic factors in either species. In contrast, CHC divergence was strongly associated with an environmental gradient supporting the idea that the climatic environment selects more directly upon these chemical signals. In light of recently advocated models of diversification via ecological selection on secondary sexual traits, the different environmental associations we found for song and CHCs suggest that the impact of ecological selection on population divergence, and how that influences speciation, might be different for acoustic versus chemical signals.",
keywords = "Acoustic signalling, Character displacement, Chemical signalling, Ecological speciation, Environmental selection, Multi‐modal signalling, Sexual selection, Teleogryllus",
author = "Peter Moran and John Hunt and Christopher Mitchell and Ritchie, {Michael Gordon} and Bailey, {Nathan William}",
note = "Funding: Orthopterists' Society, Natural Environment Research Council (Grant Number(s): NE/G00949X/1, NE/G014906/1, NE/L011255/1), ARC (Grant Number(s): DP180101708).",
year = "2020",
month = jul,
doi = "10.1111/jeb.13631",
language = "English",
volume = "33",
pages = "990--1005",
journal = "Journal of Evolutionary Biology",
issn = "1010-061X",
publisher = "John Wiley & Sons, Ltd (10.1111)",
number = "7",

}

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TY - JOUR

T1 - Sexual selection and population divergence III

T2 - interspecific and intraspecific variation in mating signals

AU - Moran, Peter

AU - Hunt, John

AU - Mitchell, Christopher

AU - Ritchie, Michael Gordon

AU - Bailey, Nathan William

N1 - Funding: Orthopterists' Society, Natural Environment Research Council (Grant Number(s): NE/G00949X/1, NE/G014906/1, NE/L011255/1), ARC (Grant Number(s): DP180101708).

PY - 2020/7

Y1 - 2020/7

N2 - A major challenge for studying the role of sexual selection in divergence and speciation is understanding the relative influence of different sexually selected signals on those processes in both intra‐ and interspecific contexts. Different signals may be more or less susceptible to co‐option for species identification depending on the balance of sexual and ecological selection acting upon them. To examine this, we tested three predictions to explain geographic variation in long‐ versus short‐range sexual signals across a 3,500 + km transect of two related Australian field cricket species (Teleogryllus spp.): (a) selection for species recognition, (b) environmental adaptation and (c) stochastic divergence. We measured male calling song and male and female cuticular hydrocarbons (CHCs) in offspring derived from wild populations, reared under common garden conditions. Song clearly differentiated the species, and no hybrids were observed suggesting that hybridization is rare or absent. Spatial variation in song was not predicted by geography, genetics or climatic factors in either species. In contrast, CHC divergence was strongly associated with an environmental gradient supporting the idea that the climatic environment selects more directly upon these chemical signals. In light of recently advocated models of diversification via ecological selection on secondary sexual traits, the different environmental associations we found for song and CHCs suggest that the impact of ecological selection on population divergence, and how that influences speciation, might be different for acoustic versus chemical signals.

AB - A major challenge for studying the role of sexual selection in divergence and speciation is understanding the relative influence of different sexually selected signals on those processes in both intra‐ and interspecific contexts. Different signals may be more or less susceptible to co‐option for species identification depending on the balance of sexual and ecological selection acting upon them. To examine this, we tested three predictions to explain geographic variation in long‐ versus short‐range sexual signals across a 3,500 + km transect of two related Australian field cricket species (Teleogryllus spp.): (a) selection for species recognition, (b) environmental adaptation and (c) stochastic divergence. We measured male calling song and male and female cuticular hydrocarbons (CHCs) in offspring derived from wild populations, reared under common garden conditions. Song clearly differentiated the species, and no hybrids were observed suggesting that hybridization is rare or absent. Spatial variation in song was not predicted by geography, genetics or climatic factors in either species. In contrast, CHC divergence was strongly associated with an environmental gradient supporting the idea that the climatic environment selects more directly upon these chemical signals. In light of recently advocated models of diversification via ecological selection on secondary sexual traits, the different environmental associations we found for song and CHCs suggest that the impact of ecological selection on population divergence, and how that influences speciation, might be different for acoustic versus chemical signals.

KW - Acoustic signalling

KW - Character displacement

KW - Chemical signalling

KW - Ecological speciation

KW - Environmental selection

KW - Multi‐modal signalling

KW - Sexual selection

KW - Teleogryllus

U2 - 10.1111/jeb.13631

DO - 10.1111/jeb.13631

M3 - Article

VL - 33

SP - 990

EP - 1005

JO - Journal of Evolutionary Biology

JF - Journal of Evolutionary Biology

SN - 1010-061X

IS - 7

ER -

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