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

Cole, Gemma L.; Endler, John A.

doi:10.1111/jeb.13300

Cited by 7 publications

(9 citation statements)

References 53 publications

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“…To determine the role of plasticity, further work should investigate the pecking preferences of fish from the lilac and green environments that are raised in the clear environment (or vice versa). We can also speculate that the predominate preference for the green stimulus across our light treatments may also give rise to a sensory bias that could drive mate preferences (male guppies display green as part of their sexual display) as is thought to have happened for long wavelength colour in other populations (Cole & Endler, 2018;Rodd et al, 2002).…”

Section: Discussionmentioning

confidence: 94%

Colour‐based foraging diverges after multiple generations under different light environments

et al. 2019

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When the environment changes, sensory systems can adapt plastically or evolve genetically to the new surroundings, and traits and behaviours reliant on these sensory systems may also change, leading to altered evolutionary trajectories. We tested for differences in colour‐based foraging preferences of guppies (Poecilia reticulata) that lived for 6–10 generations under each of three light environments (green, lilac or control) to determine whether evolution under different light environments alters visually based behaviour. When tested in a common light environment, we found differences in pecking behaviour between treatments that were likely due to changes in the visual system. Pecking behaviour towards green stimuli was consistent across light treatments, possibly reflecting the importance of detecting green algae in the wild. The blue stimulus was only pecked at by fish from the control environments. Behaviour towards long wavelength stimuli varied, possibly due to the polymorphic nature of the long wavelength opsins. These results are consistent with one component of sensory drive but do not allow us to conclude whether these differences are due to plastic or evolved responses.

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Section: Discussionmentioning

confidence: 94%

Colour‐based foraging diverges after multiple generations under different light environments

et al. 2019

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“…Evolved responses to both colours were observed, but in both studies responses to blue were weaker than those to red (Cole & Endler, 2015, 2018aEndler et al, 2001). Given that blue foods are rare in the native Trinidadian ranges of guppies (Cole & Endler, 2015), there may be a lack of a historic evolutionary association with blue food.…”

Section: Introductionmentioning

confidence: 81%

“…Predators may also capitalize on this colour preference (de Serrano et al, 2012). Moreover, artificial selection on guppies over multiple generations for a red foraging preference leads to the evolution of red spectra colouration in males (Cole & Endler, 2018a). If the learned foraging colour preference we observe in this experiment can similarly shape mate choice, this raises the possibility of plasticity‐led evolution of male colouration.…”

Section: Discussionmentioning

confidence: 99%

“…Guppies outperform zebrafish in colour discrimination experiments when two domestic strains are compared and guppy colour learning performance has been found to be superior to shape learning (Gatto et al, 2020; Lucon‐Xiccato et al, 2019). Artificial selection studies have found evolved responses to coloured stimuli differ depending on stimulus colour (Cole & Endler, 2015, 2018a; Endler et al, 2001). These two selection studies compared evolved responses to red and blue stimuli, one selecting on optomotor responses in fish from a wild population, the other on spot chasing behaviour in fish from a feral population.…”

Section: Introductionmentioning

confidence: 99%

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Colour biases in learned foraging preferences in Trinidadian guppies

Toure

Reader

2021

Ethology

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Learning allows animals to adaptively adjust their behaviour in response to variable but predictable environments. Stable aspects of the environment may result in evolved or developmental biases in the systems impacting learning, allowing for improved learning performance according to local ecological conditions. Guppies (Poecilia reticulata), like many animals, show striking colour preferences in foraging and mating contexts and guppy artificial selection experiments have found that the form and progress of evolved responses to coloured stimuli differ depending on stimulus colour. Blue colouration is thought to typically be a relatively unimportant food cue in guppies. This raises the possibility that learned foraging associations with blue objects are formed less readily than with other colours. Here, guppies were rewarded for foraging at green or blue objects in two experiments. Guppies readily foraged from these objects, but learning performance differed with rewarded object colour. With equal amounts of training, the preference for green objects became stronger than the preference for blue objects. These differences in performance were not attributable to differences in initial preferences or to foraging more on one colour during training. These findings suggest that associative pairings within a single sensory modality that do not have a historic relevancy can be more difficult for animals to learn even when there is no clear initial bias present.

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“… 2005 ; Fuller 2009 ; Alem et al. 2013 ; Cole and Endler 2018 ). In other words, selection on preference resulting from sensory bias is more appropriately represented by an equation like (4B), where T is now the foraging or predator‐avoidance trait (either a measure of behavior or of some feature of the sensory system), than one like (4A).…”

Section: An Overlooked Limitation Of the Sensory Bias Hypothesismentioning

confidence: 99%

A reexamination of theoretical arguments that indirect selection on mate preference is likely to be weaker than direct selection

Fry

2022

Evolution Letters

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Female preference for male ornaments or displays can evolve by indirect selection resulting from genetic benefits of mate choices, or by direct selection resulting from nongenetic benefits or selection on sensory systems occurring in other contexts. In an influential paper, Kirkpatrick and Barton used a good‐genes model and evolutionary rates estimated from the fossil record to conclude that indirect selection on preference is likely to be weak compared to typical strengths of direct selection. More recent authors have extrapolated from Kirkpatrick and Barton's conclusions to suggest that the presence of preference‐trait genetic correlations in equations for indirect but not direct selection gives a purely theoretical basis to the conclusion that the former is likely to be weaker than the latter. Here, I challenge these views, and argue that the relative importance of direct and indirect selection on preference is an empirical issue that defies simple generalizations. First, I show that Kirkpatrick and Barton based their conclusion on a questionable claim about typical rates of evolution due to direct selection. Second, I argue that claiming that direct selection on preference is stronger than indirect selection because only equations for the latter contain a genetic correlation mistakes the mathematical simplicity with which direct selection is usually represented for evidence regarding its magnitude. By comparing a simple equation for the selection response of preference caused by somatic (“direct”) benefits to Kirkpatrick and Barton's result for the response to indirect selection, I show that indirect selection on preference is not inherently weaker than direct selection. I also point out an important but overlooked reason why selection on preference under the sensory bias hypothesis can be expected to be less effective in the long run than that from either somatic or genetic benefits of mate choices.

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

Cited by 7 publications

References 53 publications

Colour‐based foraging diverges after multiple generations under different light environments

Colour‐based foraging diverges after multiple generations under different light environments

Colour biases in learned foraging preferences in Trinidadian guppies

A reexamination of theoretical arguments that indirect selection on mate preference is likely to be weaker than direct selection

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