0000000000314888
AUTHOR
Jindřich Brejcha
showing 4 related works from this author
Regulatory changes in pterin and carotenoid genes underlie balanced color polymorphisms in the wall lizard
2019
Significance Reptiles show an amazing color diversity based on variation in melanins, carotenoids, and pterins. This study reveals genes controlling differences between three color morphs (white, orange, and yellow) in the common wall lizard. Orange pigmentation, due to high levels of orange/red pterins in skin, is caused by genetic changes in the sepiapterin reductase gene. Yellow skin, showing high levels of yellow carotenoids, is controlled by the beta-carotene oxygenase 2 locus. Thus, the color polymorphism in the common wall lizard is associated with changes in two small regions of the genome containing genes with crucial roles in pterin and carotenoid metabolism. These genes are likel…
Supplementary materials from: Body coloration and mechanisms of colour production in Archelosauria: The case of deirocheline turtles
2019
Includes: Table S1 - Elution gradient of UPLC separation, Table S2 - HRAM Q-TOF MS conditions, Table S3 - SRM conditions used for LC-MS/MS determination of the pterins and riboflavin, Figure S1 - Results of analyses of carotenoids, Figure S2 - Chromatograms of standards of pterins and riboflavin, Figure S3 - Distributions of reflective platelets’ orientation and width, Figure S4 - Variation in 2D Fourier power spectra of spatial distribution of dermal collagen fibers of freshwater turtles, Figure S5 Results of Fourier analyses of collagen fibers in yellow zygomatic patch of Trachemys scripta scripta, Figure S6 - Results of analyses of pterins, Figure S7 - Differences in colour between sexes…
Body coloration and mechanisms of colour production in Archelosauria: the case of deirocheline turtles
2019
Animal body coloration is a complex trait resulting from the interplay of multiple mechanisms. While many studies address the functions of animal coloration, the mechanisms of colour production still remain unknown in most taxa. Here we compare reflectance spectra, cellular, ultra- and nano-structure of colour-producing elements, and pigment types in two freshwater turtles with contrasting courtship behaviour,Trachemys scriptaandPseudemys concinna. The two species differ in the distribution of pigment cell-types and in pigment diversity. We found xanthophores, melanocytes, abundant iridophores and dermal collagen fibres in stripes of both species. The yellow chin and forelimb stripes of bot…
Data from: Body coloration and mechanisms of colour production in Archelosauria: the case of deirocheline turtles
2019
Animal body coloration is a complex trait resulting from the interplay of multiple mechanisms. While many studies address the functions of animal coloration, the mechanisms of colour production still remain unknown in most taxa. Here we compare reflectance spectra, cellular, ultra- and nano- structure of colour-producing elements, and pigment types in two freshwater turtles with contrasting courtship behaviour, Trachemys scripta and Pseudemys concinna. The two species differ in the distribution of pigment cell-types and in pigment diversity. We found xanthophores, melanocytes, abundant iridophores and dermal collagen fibres in stripes of both species. The yellow chin and forelimb stripes of…