Phaeomelanin- and carotenoid-based pigmentation reflect oxidative status in two populations of the yellow warbler (Setophaga petechia)

Grunst, Andrea S.; Salgado-Ortiz, Javier; Rotenberry, John T.; Grunst, Melissa L.

doi:10.1007/s00265-013-1681-8

Cited by 15 publications

(13 citation statements)

References 58 publications

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“…The following exclusion criteria were applied: i) studies that measured expression of antioxidant genes because I were interested in the biochemical differences between sexes; ii) studies that used metrics of free radical generation as an index of oxidative stress, since they do not provide direct evidence of oxidative stress (reactive species might be mopped up before oxidative damage is generated); iii) studies where necessary information for calculating effect size was unavailable. Overall, the final dataset included 732 effect sizes from 100 articles (82 species: 7 fish, 5 reptiles, 44 birds, and 26 mammals) (Almroth et al 2008; Alonso-Alvarez et al 2004a, 2004b; Barrera-García et al 2012; Beamonte-Barrientos and Verhulst 2013; Beaulieu and Schaefer 2014, Beaulieu et al 2010, 2011, 2014; Bertrand et al 2006; Bilham et al 2013; Bize et al 2008; Bonisoli-Alquati et al 2010; Canovas et al 2014; Casagrande et al 2011, 2012a, 2012b; Cecere et al 2016; Christensen et al 2015; Christie et al 2012; Cohen et al 2008; Costantini and Bonadonna 2010; Costantini and Dell’omo 2015; Costantini et al 2007, 2008, 2010, 2012a, 2012b, 2013, 2014, 2014a, 2014b; Costantini 2010; Cram et al 2015a, 2015b; Depboylu et al 2013; Ehrenbrink et al 2006; Emaresi et al 2016; Figueiredo-Fernandes et al 2006b; Georgiev et al 2015; Gomes et al 2014; Grunst et al 2014; Heiss and Schoech 2012; Herrera-Dueñnas et al 2014; Isaksson et al 2009, 2011, 2013; Isaksson 2013; Jolly et al 2012; Kamper et al 2009; Kanerva et al 2012; Kayali et al 2007; Kurhalyuk et al 2009; Langley-Evans and Sculley 2005; Leclaire et al 2015; Lilley et al 2014; Lopes...…”

Section: Methodsmentioning

confidence: 99%

Meta-analysis reveals that reproductive strategies are associated with sexual differences in oxidative balance across vertebrates

Costantini

2017

Current Zoology

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Oxidative stress is a key physiological mechanism underlying life-history tradeoffs. Here, I use meta-analytic techniques to test whether sexual differences in oxidative balance are common in vertebrates and to identify which factors are associated with such differences. The dataset included 732 effect size estimates from 100 articles (82 species). Larger unsigned effect size (meaning larger sexual differences in a given marker) occurred in: reptiles and fish; those species that do not provide parental care; and oviparous species. Estimates of signed effect size (positive values meaning higher oxidative stress in males) indicated that females were less resistant to oxidative stress than males in: reptiles while males and females were similar in fish, birds, and mammals; those species that do not provide parental care; and oviparous species. There was no evidence for a significant sexual differentiation in oxidative balance in fish, birds, and mammals. Effect size was not associated with: the number of offspring; whether the experimental animals were reproducing or not; biomarker (oxidative damage, non-enzymatic, or enzymatic antioxidant), the species body mass; the strain (wild vs. domestic); or the study environment (wild vs. captivity). Oxidative stress tended to be higher in females than males across most of the tissues analyzed. Levels of residual heterogeneity were high in all models tested. The findings of this meta-analysis indicate that diversification of reproductive strategies might be associated with sexual differences in oxidative balance. This explorative meta-analysis offers a starting platform for future research to investigate the relationship between sex and oxidative balance further.

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Section: Methodsmentioning

confidence: 99%

Meta-analysis reveals that reproductive strategies are associated with sexual differences in oxidative balance across vertebrates

Costantini

2017

Current Zoology

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“…However, we also predicted that highly pigmented males might be more likely to maintain provisioning effort at concealed nests, in accordance with results. In our population, carotenoid pigmentation increases longitudinally with male age (Grunst et al , ), and is greater in first year breeding males that are in better condition as nestlings and at pre‐breeding molt (Grunst et al ). Thus, carotenoid‐based pigmentation may be related to quality and age‐related differences in both the ability to evade predation, and experience with assessing predation threats (Cabido et al , Fowler‐Finn and Hebets ).…”

Section: Discussionmentioning

confidence: 92%

“…Thus, the two pigment types may convey non‐equivalent information (Grunst et al ). We have previously established that carotenoid‐ and phaeomelanin‐based pigmentation are associated with metrics of individual condition in both sexes of the yellow warbler (Grunst et al , ), and warblers show assortative social pairing by pigmentation (Grunst and Grunst ). Further, a past study found greater extra‐pair paternity among males expressing more melanin‐based pigmentation (Yezerinac and Weatherhead ), and in our study population males co‐expressing high levels of both melanin‐ and carotenoid‐based pigmentation lose less paternity in their social broods (Grunst and Grunst ).…”

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confidence: 99%

Sexual pigmentation and parental risk‐taking in yellow warblers Setophaga petechia

Grunst

Rotenberry

2014

Journal of Avian Biology

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Adult‐directed predation risk imposes important behavioral constraints on parents and might thus alter relationships between costly sexual ornaments and parental performance. For instance, under low predation risk, highly ornamented individuals might display better parental performance than others, as predicted by ‘good parent’ models of sexual selection. However, under high risk of predation, highly ornamented individuals might abandon parental effort if conspicuous to predators, or if social partners are more willing to take parental risks when paired with highly ornamented mates. We experimentally elevated perceived adult‐directed predation risk near nests to explore how carotenoid‐ and phaeomelanin‐based pigmentation in both sexes relate to parental risk‐taking for offspring in the yellow warbler Setophaga petechia. Compared to other males, males with more intense carotenoid‐based pigmentation maintained higher levels of paternal effort under predation risk at highly concealed nests, but reduced nestling provisioning rate more at exposed nests. Further, when faced with predation risk, females with more phaeomelanin‐based pigmentation reduced nestling provisioning rate less than other females, regardless of nest concealment. Females displayed higher parental effort across treatments when paired to males with more colorful carotenoid pigmentation. However, birds did not reduce parental effort under risk less when paired to a highly ornamented mate, suggesting that predation risk did not accentuate differential allocation. Males did not take fewer parental risks than females. Results indicate that nest concealment modifies parental risk‐taking by males with colorful carotenoid‐based pigmentation, and suggest that female melanin‐based pigmentation may indicate boldness and greater a propensity to take parental risks.

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“…Red chroma was calculated as the proportion of reflectance in the red range of the spectrum (600–700 nm) to the total reflectance at 300–700 nm (S1R in rclr software; Montgomerie ), and it was used to characterize saturation of pheomelanin‐based coloration (Grunst et al . , Zduniak et al . ).…”

Section: Methodsmentioning

confidence: 99%

Variation in melanin pigmentation of a sexually selected plumage trait and its adaptive value in the Common SnipeGallinago gallinago

Minias

Surmacki

Kudelska

et al. 2017

Ibis

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There is increasing evidence that melanin-based plumage coloration correlates with different components of fitness and that it may act as a social or sexual signal of individual quality. We analysed variation in melanin pigmentation in the outermost tail feathers of the Common Snipe Gallinago gallinago. During courtship flights, male Snipe use their outermost tail feathers to generate a drumming sound, which plays a role in territory establishment and mate choice. As the outermost tail feathers are displayed to females during these flights, we predicted that conspicuous variation in their rusty-brown (pheomelanin-based) coloration may act as an honest signal of individual quality. To test this prediction, we spectrophotometrically measured brightness (an indicator of total melanin content) and red chroma (an indicator of pheomelanin content) of the outermost tail feathers in 180 juvenile and adult Common Snipe. An agerelated decline in feather brightness was found exclusively in females, suggesting that melanization could have evolved by natural selection to camouflage incubating birds. In both sexes, brightness of the tail feathers was inversely correlated with their structural quality (as measured with mass-length residuals), suggesting that melanization could increase mechanical properties of feathers and, in males, enhance the quality of courtship sonation. Red chroma positively correlated with total plasma protein concentration, supporting our prediction that pheomelanin pigmentation of tail feathers may act as an honest signal of condition. Our study indicated that variation in the melaninbased coloration of the outermost tail feathers in the Common Snipe could have evolved as a result of several different selection pressures and it emphasizes the complexity of the processes that underlie the evolution of melanin-based plumage coloration in birds.

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Phaeomelanin- and carotenoid-based pigmentation reflect oxidative status in two populations of the yellow warbler (Setophaga petechia)

Cited by 15 publications

References 58 publications

Meta-analysis reveals that reproductive strategies are associated with sexual differences in oxidative balance across vertebrates

Meta-analysis reveals that reproductive strategies are associated with sexual differences in oxidative balance across vertebrates

Sexual pigmentation and parental risk‐taking in yellow warblers Setophaga petechia

Variation in melanin pigmentation of a sexually selected plumage trait and its adaptive value in the Common SnipeGallinago gallinago

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