Carotenoid Access, Nutritional Stress, and the Dewlap Color of Male Brown Anoles

  title={Carotenoid Access, Nutritional Stress, and the Dewlap Color of Male Brown Anoles},
  author={John E. Steffen and Geoffrey E. Hill and Craig Guyer},
  pages={239 - 246}
Abstract Carotenoids are integumentary colorants that must be ingested by vertebrates to be used as colorants. In many studies of fish and birds, carotenoid color serves as an indicator of foraging success, nutritional state, or parasite load. The dewlap of male Brown Anoles (Norops sagrei) contains the carotenoid pigments lutein and zeaxanthin. We performed a two-factor experiment to determine the effects of nutritional stress and xanthophyll supplementation on male dewlap color in N. sagrei… 

Maternal allocation of carotenoids to eggs in an Anolis lizard.

Dietary lipids reduce the expression of carotenoid-based coloration in Lacerta vivipara

This study shows for the first time that dietary lipids do not enhance but reduce the intensity of male carotenoid-based ornaments, and suggests that, at least in the common lizard, sexual selection with respect to carotin and zeaxanthin coloration may select for males with low antioxidant capacity and thus for males of superior health.

Carotenoid deprivation and beta-carotene's effects on male and female turtle color.

Iridophores and Not Carotenoids Account for Chromatic Variation of Carotenoid-Based Coloration in Common Lizards (Lacerta vivipara)

Investigating the origin of environmentally induced variation in the carotenoid-based ventral coloration of male common lizards by investigating the effects of dietaryCarotenoids and corticosterone on both carotanoid- and background-related reflectance demonstrates that chromatic variation in carotinoid- based ornaments may not exclusively reflect differences in integumentary carotENoid content and, hence, in qualities linked to carotensoid deposition.

Differences in carotenoid accumulation among three feeder-cricket species: implications for carotenoid delivery to captive insectivores.

Overall, this study shows that, by providing captive insectivores with G. bimaculatus crickets recently fed a carotenoid-rich diet, the quantity ofcarotenoids in the diet can be increased.

The effect of carotenoid supplementation on immune system development in juvenile male veiled chameleons (Chamaeleo calyptratus)

The results indicate that body mass and age, but not carotenoid access, may play an important role in immune performance of growing chameleons.

Vitamin E, Vitamin A, and Carotenoids in Male Common Lizard Tissues

Using high-performance liquid chromatography, the concentrations of vitamin E, vitamin A, and carotenoids in plasma, storage sites, and in the colored ventral skin of male Common Lizards are determined to suggest that important differences exist in micronutrient presence, concentration, and distribution among tissues of lizards and other taxa such as birds and mammals.

Red carotenoids and associated gene expression explain colour variation in frillneck lizards

It is found that, unlike other squamate reptiles, red hues derive from a higher proportion of ketocarotenoid relative to both dietary yellow carotenoids and to pteridines, and it is hypothesize that frill colour conveys different information in the two populations.

The effect of dietary carotenoid increase on painted turtle spot and stripe color.

Proximate mechanisms of colour variation in the frillneck lizard: geographical differences in pigment contents of an ornament

The results suggest that selective pressures vary across the species’ range and it is speculated that predation pressures and/or intrasexual signalling context differ between forms.



Dietary carotenoids predict plumage coloration in wild house finches

Testing the gut contents of moulting house finches and comparing the concentration of carotenoid pigments in their gut contents with the colour of growing feathers found a positive association: males that ingested food with a higher concentration ofcarotenoids grew brighter ornamental plumage.

Dietary carotenoid pigments and immune function in a songbird with extensive carotenoid-based plumage coloration

The hypothesis that songbirds with extensive carotenoid-based plumage displays trade off the use of carotanoid pigments for ornamentation versus immune function is not supported.

Carotenoids, Immunocompetence, and the Information Content of Sexual Colors: An Experimental Test

Experimental findings suggest that carotenoid‐based color signals in birds may directly signal male health via the immunostimulatory action of ingested and circulated carOTenoid pigments.


Observations found that captive male House Finches experimentally infected with Isospora spp.

How dewlap color reflects its carotenoid and pterin content in male and female brown anoles (Norops sagrei).

  • John E. SteffenK. McGraw
  • Environmental Science
    Comparative biochemistry and physiology. Part B, Biochemistry & molecular biology
  • 2009

Carotenoid scarcity, synthetic pteridine pigments and the evolution of sexual coloration in guppies (Poecilia reticulata)

  • G. GretherJ. HudonJ. Endler
  • Biology, Environmental Science
    Proceedings of the Royal Society of London. Series B: Biological Sciences
  • 2001
It is reported that the orange spots that male guppies (Poecilia reticulata) display to females contain red pteridine pigments (drosopterins) in addition to carotenoids, and the relationship between drosopterin production by males and carOTenoid availability in the field is examined.

Contributions of pterin and carotenoid pigments to dewlap coloration in two anole species.

Carotenoids and bile pigments in Danaid and swallowtail butterflies

It was found that both the kite swallowtails and the Danaid glassy tigers contained only lutein, and even lacked β-carotene, the first known instance among butterflies.

Skin Pigments and Coloration in the Jamaican Radiation of Anolis Lizards

This work conducted a study of skin pigments in the Jamaican radiation of anoles, known as the 'grahami series', to examine how these anoles compare with those previously studied, and describes a pigmentary novelty that is unique to A. conspersus within the seven-species radiation.