Variation in Response to Artificial Selection for Light Sensitivity in Guppies (Poecilia reticulata)

Endler,; Basolo,; Glowacki,; Zerr,

doi:10.2307/3078896

Cited by 23 publications

(33 citation statements)

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“…Nevertheless, several studies suggested a causal relationship between visual perception and mating decisions at the level of species divergence [36], [52], [53]. We thus propose that variation in visual sensitivity in females might contribute to mating preferences since an improved visual perception should promote detection of male red coloration as well as discrimination between varying degrees of male coloration.…”

Section: Introductionmentioning

confidence: 83%

“…Alternatively, among-individual variability in genetic predispositions can simply be expressed in phenotypic differences in the sensory apparatus which may, for example, result in different perceptual and discriminatory abilities in females [21]. However, the proximate basis of variation in female preference functions is rarely explored [36], [37] although, as previously depicted, reliable knowledge of the underlying mechanisms should provide useful information on the evolution of sexually selected traits. For instance, the sensory drive hypothesis addresses the mechanistic basis of mating preferences in that it predicts that females prefer a specific male signal design which maximally stimulates their sensory system and is thus more conspicuous and easier to detect in their local environment [38]–[40].…”

Section: Introductionmentioning

confidence: 99%

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Male Red Ornamentation Is Associated with Female Red Sensitivity in Sticklebacks

Rick¹,

Mehlis²,

Bakker³

2011

PLoS ONE

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Sexual selection theory proposes correlated evolutionary changes in mating preferences and secondary sexual characters based on a positive genetic correlation between preference and the preferred trait. Empirical work has provided support for a genetic covariation between female preference and male attractiveness in several taxa. Here, we study parent and offspring visual traits in threespine sticklebacks, Gasterosteus aculeatus. While focusing on the proximate basis of mating preferences, we compare the red breeding coloration of males, which strongly contributes to female choice, with their daughters' red sensitivity measured by optomotor response thresholds. We show that the red color expression of fathers correlates well with their daughters' red sensitivity. Given that a within-population genetic correlation between signal and preference was experimentally confirmed for the red coloration in sticklebacks, our results indicate a proximate mechanism in terms of perceptual sensitivity being involved in the co-evolution of female preferences and male mating signals.

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Section: Introductionmentioning

confidence: 83%

Section: Introductionmentioning

confidence: 99%

Male Red Ornamentation Is Associated with Female Red Sensitivity in Sticklebacks

Rick¹,

Mehlis²,

Bakker³

2011

PLoS ONE

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“…Artificial selection experiments are invaluable tools for directly investigating the response to selection, general evolvability (sustainability of the response) and the existence of genetic correlations [16], [17]. Few studies have applied these methods to teleosts models of evolutionary and not aquacultural research [18], [19], [20].…”

Section: Introductionmentioning

confidence: 99%

Eggspot Number and Sexual Selection in the Cichlid Fish Astatotilapia burtoni

Henning

Meyer

2012

PLoS ONE

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Sexual selection on male coloration is one of the main mechanisms proposed to explain the explosive speciation rates in East African cichlid fish. True eggspots are color patterns characteristic of the most species-rich lineage of cichlids, the Haplochromini, and have been suggested to be causally related to the speciation processes. Eggspots are thought to have originated by sensory exploitation and subsequently gained several roles in sexual advertisement. However, for most of these functions the evidence is equivocal. In addition, the genetic architecture of this trait still is largely unknown. We conducted bidirectional selective breeding experiments for eggspot numbers in the model cichlid, Astatotilapia burtoni. After two generations, low lines responded significantly, whereas the high lines did not. Body size was both phenotypically and genotypically correlated with eggspot number and showed correlated response to selection. Males with higher numbers of eggspots were found to sire larger offspring. Despite the potential to act as honest indicators of fitness, the behavioral experiments showed no evidence of a role in either intra- or inter-sexual selection. Visual-based female preference was instead explained by courtship intensity. The evolution of this trait has been interpreted in light of adaptive theories of sexual selection, however the present and published results suggest the influence of non-adaptive factors such as sensory exploitation, environmental constraints and sexual antagonism.

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“…Endler et al [61] showed that light sensitivity changed in response to artificial selection in guppies. Recent studies on cone visual pigments of Lake Malawi cichlids [21] and zebra fish [62] indicated that the relative expression levels of different opsin genes reflect spectral sensitivity of the fish.…”

Section: Discussionmentioning

confidence: 99%

A genetically explicit model of speciation by sensory drive within a continuous population in aquatic environments

et al. 2007

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Background: The sensory drive hypothesis predicts that divergent sensory adaptation in different habitats may lead to premating isolation upon secondary contact of populations. Speciation by sensory drive has traditionally been treated as a special case of speciation as a byproduct of adaptation to divergent environments in geographically isolated populations. However, if habitats are heterogeneous, local adaptation in the sensory systems may cause the emergence of reproductively isolated species from a single unstructured population. In polychromatic fishes, visual sensitivity might become adapted to local ambient light regimes and the sensitivity might influence female preferences for male nuptial color. In this paper, we investigate the possibility of speciation by sensory drive as a byproduct of divergent visual adaptation within a single initially unstructured population. We use models based on explicit genetic mechanisms for color vision and nuptial coloration.

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Variation in Response to Artificial Selection for Light Sensitivity in Guppies (Poecilia reticulata)

Cited by 23 publications

References 0 publications

Male Red Ornamentation Is Associated with Female Red Sensitivity in Sticklebacks

Male Red Ornamentation Is Associated with Female Red Sensitivity in Sticklebacks

Eggspot Number and Sexual Selection in the Cichlid Fish Astatotilapia burtoni

A genetically explicit model of speciation by sensory drive within a continuous population in aquatic environments

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