A trade-off between natural and sexual selection underlies diversification of a sexual signal

Heinen‐Kay, Justa L.; Morris, Kirstin E.; Ryan, Nicole A.; Byerley, Samantha L.; Venezia, Rebecca E.; Peterson, M. Nils; Langerhans, R. Brian

doi:10.1093/beheco/aru228

Cited by 46 publications

(37 citation statements)

References 58 publications

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“…However, this is not only logistically challenging, but also ethically questionable. By using 3D printed models of males with and without coloration, the potential trade‐off could be easily examined, and results indicated that signal diversity can be driven by the interaction of natural and sexual selection (Heinen‐Kay et al, ).…”

Section: Evolutionmentioning

confidence: 99%

3D Printing: Applications in evolution and ecology

Walker

Humphries

2019

Ecology and Evolution

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In the commercial and medical sectors, 3D printing is delivering on its promise to enable a revolution. However, in the fields of Ecology and Evolution we are only on the brink of embracing the advantages that 3D printing can offer. Here we discuss examples where the process has enabled researchers to develop new techniques, work with novel species, and to enhance the impact of outreach activities. Our aim is to showcase the potential that 3D printing offers in terms of improved experimental techniques, greater flexibility, reduced costs and promoting open science, while also discussing its limitations. By taking a general overview of studies using the technique from fields across the broad range of Ecology and Evolution, we show the flexibility of 3D printing technology and aim to inspire the next generation of discoveries.

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Section: Evolutionmentioning

confidence: 99%

3D Printing: Applications in evolution and ecology

Walker

Humphries

2019

Ecology and Evolution

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“…Sexual signals often reflect a balance between natural and sexual selection—while sexual selection tends to favor trait elaboration, natural selection often provides a braking force that favors trait reduction (Heinen‐Kay et al., ; Zuk & Kolluru, ). In some cases, the delicate balance between these selective forces can tip, and natural selection can drive the evolutionary loss of a sexual signal (Wiens, ; Zuk, Rotenberry, & Tinghitella, ).…”

Section: Introductionmentioning

confidence: 99%

Limited flexibility in female Pacific field cricket (Teleogryllus oceanicus) exploratory behaviors in response to perceived social environment

2018

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How populations adapt, or not, to rapid evolution of sexual signals has important implications for population viability, but is difficult to assess due to the paucity of examples of sexual signals evolving in real time. In Hawaiian populations of the Pacific field cricket (Teleogryllus oceanicus), selection from a deadly parasitoid fly has driven the rapid loss of a male acoustic signal, calling song, that females use to locate and evaluate potential mates. In this newly quiet environment where many males are obligately silent, how do phonotactic females find mates? Previous work has shown that the acoustic rearing environment (presence or absence of male calling song) during late juvenile stages and early adulthood exposes adaptive flexibility in locomotor behaviors of males, as well as mating behaviors in both sexes that helps facilitate the spread of silent (flatwing) males. Here, we tested whether females also show acoustically induced plasticity in walking behaviors using laboratory‐reared populations of T. oceanicus from Kauai (HI; >90% flatwings), Oahu (HI; ~50% flatwings), and Mangaia (Cook Islands; no flatwings or parasitoid fly). Though we predicted that females reared without song exposure would increase walking behaviors to facilitate mate localization when song is rare, we discovered that, unlike males, female T. oceanicus showed relatively little plasticity in exploratory behaviors in response to an acoustic rearing environment. Across all three populations, exposure to male calling song during development did not affect latency to begin walking, distance walked, or general activity of female crickets. However, females reared in the absence of song walked slower and showed a marginally non‐significant tendency to walk for longer durations of time in a novel environment than those reared in the presence of song. Overall, plasticity in female walking behaviors appears unlikely to have facilitated sexual signal loss in this species.

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“…We focused on three male traits used during courtship displays and subject to female preference: dorsal fin redness, anal fin redness, and gonopodia length [19,20]. While DOC was the focal driver in our study, other ecological costs such as predation are potent evolutionary agents (reviewed in [21,22]) that also drive the adaptive evolution of sexual signals in this system [20,23,24], and many others [25 -28]. Therefore, we included predation surveys in our study to assess this effect in concert with the spectral environment, and in doing so we offer an assessment of their individual and combined effects on sexual signals.…”

Section: Introductionmentioning

confidence: 99%

Dissolved organic carbon and unimodal variation in sexual signal coloration in mosquitofish: a role for light limitation?

Giery¹,

Layman²

2017

Proc. R. Soc. B.

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Natural selection plays an important role in the evolution of sexual communication systems. Here, we assess the effect of two well-known selection agents, transmission environment and predation, on interpopulation variation in sexual signals. Our model system is a series of 21 populations of Bahamian mosquitofish subjected to independent variation in optical conditions and predation risk. We show that optically diverse environments, caused by locally variable dissolved organic carbon concentrations, rather than spatial variation in predation, drove divergence in fin coloration (fin redness). We found a unimodal pattern of phenotypic variation along the optical gradient indicating a threshold-type response of visual signals to broad variation in optical conditions. We discuss evolutionary and ecological mechanisms that may drive such a pattern as well as the implications of non-monotonic clines for evolutionary differentiation.

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A trade-off between natural and sexual selection underlies diversification of a sexual signal

Cited by 46 publications

References 58 publications

3D Printing: Applications in evolution and ecology

3D Printing: Applications in evolution and ecology

Limited flexibility in female Pacific field cricket (Teleogryllus oceanicus) exploratory behaviors in response to perceived social environment

Dissolved organic carbon and unimodal variation in sexual signal coloration in mosquitofish: a role for light limitation?

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