Male courtship decisions are influenced by light environment and female receptivity

Cole, Gemma L.; Endler, John A.

doi:10.1098/rspb.2016.0861

Cited by 25 publications

(19 citation statements)

References 45 publications

(76 reference statements)

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“…We took reflectance scans over 300–700 nm. Measurements were standardized using black and Spectralon white standards and recorded using Ocean Optics SpectraSuite ® software (Cole & Endler, , ). We measured 20 males from each selection line replicate per generation (the same males that were photographed as above, one male died in B1 leaving only 19 to photograph in that selection line).…”

Section: Methodsmentioning

confidence: 99%

Change in male coloration associated with artificial selection on foraging colour preference

Cole

Endler

2018

J of Evolutionary Biology

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Sensory drive proposes that natural selection on nonmating behaviours (e.g. foraging preferences) alters sensory system properties and results in a correlated effect on mating preferences and subsequently sexual traits. In colour-based systems, we can test this by selecting on nonmating colour preferences and testing for responses in colour-based female preferences and male sexual coloration. In guppies (Poecilia reticulata), individual functional links of sensory drive have been demonstrated providing an opportunity to test the process over more than one link. We measured male coloration and female preferences in populations previously artificially selected for colour-based foraging behaviour towards two colours, red and blue. We found associated changes in male coloration in the expected direction as well as weak changes in female preferences. Our results can be explained by a correlated response in female preferences due to artificial selection on foraging preferences that are mediated by a shared sensory system or by other mechanisms such as colour avoidance, pleiotropy or social experiences. This is the first experimental evidence that selection on a nonmating behaviour can affect male coloration and, more weakly, female preferences.

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Section: Methodsmentioning

confidence: 99%

Change in male coloration associated with artificial selection on foraging colour preference

Cole

Endler

2018

J of Evolutionary Biology

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“…(2008) Fish Lake Victoria Cichlids Vision Aquatic Yes Yes Maan et al. (2006) Fish Goodeids Vision Aquatic Yes Yes Garcia and Ramirez (2005) Fish Guppies Vision Aquatic Yes Endler (1980) Fish Guppies Vision Aquatic Yes Yes Endler (1983) Fish Guppies Vision Aquatic Yes Endler (1987) Fish Guppies Vision Aquatic Yes Yes Endler (1991) Fish Guppies Vision Aquatic Yes Yes Endler (1995) Fish Guppies Vision Aquatic Yes Cole and Endler (2016) Fish Guppies Vision Aquatic …”

Section: Evidence For Sensory Drivementioning

confidence: 99%

25 Years of sensory drive: the evidence and its watery bias

2018

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It has been 25 years since the formalization of the Sensory Drive hypothesis was published in the American Naturalist (1992). Since then, there has been an explosion of research identifying its utility in contributing to our understanding of inter- and intra-specific variation in sensory systems and signaling properties. The main tenet of Sensory Drive is that environmental characteristics will influence the evolutionary trajectory of both sensory (detecting capabilities) and signaling (detectable features and behaviors) traits in predictable directions. We review the accumulating evidence in 154 studies addressing these questions and categorized their approach in terms of testing for environmental influence on sensory tuning, signal characteristics, or both. For the subset of studies that examined sensory tuning, there was greater support for Sensory Drive processes shaping visual than auditory tuning, and it was more prevalent in aquatic than terrestrial habitats. Terrestrial habitats and visual traits were the prevalent habitat and sensory modality in the 104 studies showing support for environmental influence on signaling properties. An additional 19 studies that found no supporting evidence for environmental influence on signaling traits were all based in terrestrial ecosystems and almost exclusively involved auditory signals. Only 29 studies examined the complete coevolutionary process between sensory and signaling traits and were dominated by fish visual communication. We discuss biophysical factors that may contribute to the visual and aquatic bias for Sensory Drive evidence, as well as biotic factors that may contribute to the lack of Sensory Drive processes in terrestrial acoustic signaling systems.

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“…Male reproduction is costly, requiring investment in sexual ornaments and weapons (Emlen 2001), mating behavior (e.g., courtship, mate guarding; Cole and Endler 2016; Dowling and Webster 2017), and sperm/ejaculate production (Olsson et al. 1997).…”

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confidence: 99%

Quantifying the costs of pre- and postcopulatory traits for males: Evidence that costs of ejaculation are minor relative to mating effort

2021

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Although it is widely stated that both mating behavior and sperm traits are energetically costly for males, we currently lack empirical estimates of the relative costs to males of pre‐ versus postcopulatory investments. Such estimates require the experimental separation of the act of mating from that of ejaculation, which is a nontrivial logistical challenge. Here, we overcome this challenge using a novel morphological manipulation (gonopodium tip ablation) in the eastern mosquitofish (Gambusia holbrooki) to tease apart investment in mating effort from that in sperm replenishment following ejaculation. We quantified the relative cumulative costs of investing in mating effort and ejaculation by comparing somatic traits and reproductive performance among three types of males: ablated males that could attempt to mate but not ejaculate; unablated males that could both mate and ejaculate; and control males that had no access to females. We show that, after eight weeks, mating investment significantly reduces both body growth and immunocompetence and results in a significant decline in mating effort. In contrast, cumulative investment into sperm replenishment following ejaculation has few detectable effects that are only apparent in smaller males. These minor costs occur despite the fact that G. holbrooki has very high levels of sperm competition and multiple mating by both sexes, which is usually associated with elevated levels of sperm production. Crucially, our study is the first, to our knowledge, to experimentally compare the relative costs of pre‐ and postcopulatory investment on components of male fitness in a vertebrate.

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Male courtship decisions are influenced by light environment and female receptivity

Cited by 25 publications

References 45 publications

Change in male coloration associated with artificial selection on foraging colour preference

Change in male coloration associated with artificial selection on foraging colour preference

25 Years of sensory drive: the evidence and its watery bias

Quantifying the costs of pre- and postcopulatory traits for males: Evidence that costs of ejaculation are minor relative to mating effort

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