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Do carotenoid‐based ornaments entail resource trade‐offs? An evaluation of theory and data
Within the past several decades, resource trade‐offs have emerged as the commonly
accepted explanation for how carotenoid‐based coloration links to individual performance …
accepted explanation for how carotenoid‐based coloration links to individual performance …
Carotenoid metabolism strengthens the link between feather coloration and individual quality
Thirty years of research has made carotenoid coloration a textbook example of an honest
signal of individual quality, but tests of this idea are surprisingly inconsistent. Here, to …
signal of individual quality, but tests of this idea are surprisingly inconsistent. Here, to …
The rate of telomere loss is related to maximum lifespan in birds
Telomeres are highly conserved regions of DNA that protect the ends of linear
chromosomes. The loss of telomeres can signal an irreversible change to a cell's state …
chromosomes. The loss of telomeres can signal an irreversible change to a cell's state …
Colourful traits in female birds relate to individual condition, reproductive performance and male-mate preferences: a meta-analytic approach
Colourful traits in females are suggested to have evolved and be maintained by sexual
selection. Although several studies have evaluated this idea, support is still equivocal …
selection. Although several studies have evaluated this idea, support is still equivocal …
No evidence that carotenoid pigments boost either immune or antioxidant defenses in a songbird
Dietary carotenoids have been proposed to boost immune system and antioxidant functions
in vertebrate animals, but studies aimed at testing these physiological functions of …
in vertebrate animals, but studies aimed at testing these physiological functions of …
Environmental gradients predict the ratio of environmentally acquired carotenoids to self‐synthesised pteridine pigments
Carotenoids are important pigments producing integument colouration; however, their
dietary availability may be limited in some environments. Many species produce yellow to …
dietary availability may be limited in some environments. Many species produce yellow to …
[HTML][HTML] Life after logging in tropical forests of Borneo: A meta-analysis
Selectively logged tropical forests retain high species richness and functional diversity, but
species composition changes after logging, suggesting that some species are more …
species composition changes after logging, suggesting that some species are more …
The evolution of carotenoid‐based plumage colours in passerine birds
Many birds use carotenoids to colour their plumage yellow to red. Because birds cannot
synthesise carotenoids, they need to obtain these pigments from food, although some …
synthesise carotenoids, they need to obtain these pigments from food, although some …
Mitochondria-targeted molecules determine the redness of the zebra finch bill
The evolution and production mechanisms of red carotenoid-based ornaments in animals
are poorly understood. Recently, it has been suggested that enzymes transforming yellow …
are poorly understood. Recently, it has been suggested that enzymes transforming yellow …
Relocation to avoid costs: A hypothesis on red carotenoid‐based signals based on recent CYP2J19 gene expression data
In many vertebrates, the enzymatic oxidation of dietary yellow carotenoids generates red
keto‐carotenoids giving color to ornaments. The oxidase CYP2J19 is here a key effector. Its …
keto‐carotenoids giving color to ornaments. The oxidase CYP2J19 is here a key effector. Its …