Cuticular hydrocarbons as a basis for chemosensory self‐referencing in crickets: a potentially universal mechanism facilitating polyandry in insects

Weddle, Carie B.; Steiger, Sandra; Hamaker, Christopher G.; Ower, Geoffrey D.; Mitchell, Christopher; Sakaluk, Scott K.; Hunt, John

doi:10.1111/ele.12046

Cited by 50 publications

(58 citation statements)

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“…These findings build on a growing body of evidence that social interactions can maintain phenotypic variation in traits facilitating recognition [7,9,11,13,67–69]. Our evidence is consistent with the hypothesis that variation is maintained owing to negative frequency on multiple, as of yet unidentified, regions of the P. fuscatus genome instead of selection for increased phenotypic plasticity.…”

Section: Discussionsupporting

confidence: 88%

Heritable variation in colour patterns mediating individual recognition

2017

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Understanding the developmental and evolutionary processes that generate and maintain variation in natural populations remains a major challenge for modern biology. Populations of Polistes fuscatus paper wasps have highly variable colour patterns that mediate individual recognition. Previous experimental and comparative studies have provided evidence that colour pattern diversity is the result of selection for individuals to advertise their identity. Distinctive identity-signalling phenotypes facilitate recognition, which reduces aggression between familiar individuals in P. fuscatus wasps. Selection for identity signals may increase phenotypic diversity via two distinct modes of selection that have different effects on genetic diversity. Directional selection for increased plasticity would greatly increase phenotypic diversity but decrease genetic diversity at associated loci. Alternatively, heritable identity signals under balancing selection would maintain genetic diversity at associated loci. Here, we assess whether there is heritable variation underlying colour pattern diversity used for facial recognition in a wild population of P. fuscatus wasps. We find that colour patterns are heritable and not Mendelian, suggesting that multiple loci are involved. Additionally, patterns of genetic correlations among traits indicated that many of the loci underlying colour pattern variation are unlinked and independently segregating. Our results support a model where the benefits of being recognizable maintain genetic variation at multiple unlinked loci that code for phenotypic diversity used for recognition.

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Section: Discussionsupporting

confidence: 88%

Heritable variation in colour patterns mediating individual recognition

2017

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“…This demonstrates the ability of females to distinguish between previously encountered males and novel males, which may be due mechanistically to females self-marking males with their cuticle hydrocarbons during copulations (Weddle et al, 2013). This demonstrates the ability of females to distinguish between previously encountered males and novel males, which may be due mechanistically to females self-marking males with their cuticle hydrocarbons during copulations (Weddle et al, 2013).…”

Section: Discussionmentioning

confidence: 87%

Effects of mating patterns on reproductive performance and offspring fitness in Cryptolaemus montrouzieri

Xie

Zhang²,

et al. 2014

Entomologia Exp Applicata

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We examined the female mating choice of Cryptolaemus montrouzieri Mulsant (Coleoptera: Coccinellidae) when exposed to a male with which she had mated before vs. a novel male which she never encountered. After first mating, most females chose to remate with the same male and showed a shorter mating latency period to copulation with the familiar male as compared to a new male. Then, we allowed a female to mate once, 59 with the same, or 59 with different males to evaluate how different mating patterns influence the females' reproductive performance and offspring fitness. Mating 59 with the same male or different males improved female egg production, but had no effect on hatching rate or offspring fitness. Our findings suggest that female C. montrouzieri are able to distinguish between familiar and unfamiliar males and prefer to mate with the former. Further, multiple mating appears to offer material benefits to female C. montrouzieri specifically by increasing fecundity.

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“…However, a growing body of evidence suggests that male chemical signals in the form of CHCs can have a profound influence on female mating preferences even after pair formation has occurred [7,8,57,58]. Most evidence to date has been based on laboratory observation and the dearth of studies in wild populations is almost certainly a consequence of the difficulty in measuring male mating success under natural conditions.…”

Section: Discussionmentioning

confidence: 99%

Sexual selection on cuticular hydrocarbons of male sagebrush crickets in the wild

et al. 2013

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ResearchCite this article: Steiger S, Ower GD, Stökl J, Mitchell C, Hunt J, Sakaluk SK. Cuticular hydrocarbons (CHCs) play an essential role in mate recognition in insects but the form and intensity of sexual selection on CHCs has only been evaluated in a handful of studies, and never in a natural population. We quantified sexual selection operating on CHCs in a wild population of sagebrush crickets, a species in which nuptial feeding by females imposes an unambiguous phenotypic marker on males. Multivariate selection analysis revealed a saddle-shaped fitness surface, suggesting a complex interplay between the total abundance of CHCs and specific CHC combinations in their influence on female choice. The fitness surface resulting from two axes of disruptive selection reflected a trade-off between short-and long-chained CHCs, suggesting that males may be sacrificing some level of desiccation resistance in favour of increased attractiveness. There was a significant correlation between male body size and total CHC abundance, suggesting that male CHCs provide females with a reliable cue for maximizing benefits obtained from males. Notwithstanding the conspicuousness of males' acoustic signals, our results suggest that selection imposed on males via female mating preferences may be far more complex than previously appreciated and operating in multiple sensory modalities.

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Cuticular hydrocarbons as a basis for chemosensory self‐referencing in crickets: a potentially universal mechanism facilitating polyandry in insects

Cited by 50 publications

References 50 publications

Heritable variation in colour patterns mediating individual recognition

Heritable variation in colour patterns mediating individual recognition

Effects of mating patterns on reproductive performance and offspring fitness in Cryptolaemus montrouzieri

Sexual selection on cuticular hydrocarbons of male sagebrush crickets in the wild

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