Antibiotic treatment increases yellowness of carotenoid feather coloration in male greenfinches (Chloris chloris)
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چکیده
منابع مشابه
Activity and Predator Escape Performance of Common Greenfinches Carduelis Chloris Infected with Sindbis Virus
For birds as well as for other animals, parasites are important selective agents (Møller et al. 1990). The need to defend the body against invading parasites has led birds and other organisms to evolve a wide array of adaptations to prevent initial infection and subsequent proliferation (Sheldon & Verhulst 1996; Clayton & Moore 1997; Norris & Evans 2000). A first line of defence mechanism inclu...
متن کاملHow feather colour reflects its carotenoid content
1. Many birds sequester carotenoid pigments in colourful patches of feathers to advertise or compete for mates. Because carotenoids can be scarce in nature and serve valuable physiological functions, only the highest-quality individuals are thought to acquire or allocate more pigments for use in sexual displays. 2. A critical but rarely tested assumption of carotenoid-based signals is that the ...
متن کاملCarotenoid coloration in greenfinches is individually consistent irrespective of foraging ability.
Carotenoid-based plumage coloration of birds has been hypothesized to honestly reflect individual quality, either because carotenoids are difficult to acquire via food or because of a trade-off in allocation of carotenoids between maintenance and signaling functions. We tested whether differential foraging ability is a necessary precondition for maintaining individual differences in carotenoid-...
متن کاملFeather mite abundance increases with uropygial gland size and plumage yellowness in Great Tits Parus major
Plumicolous feather mites are ectosymbiotic organisms that live on bird feathers. Despite their abundance and prevalence among birds, the ecology of the interaction between these organisms and their hosts is poorly known. As feather mites feed on oil that birds spread from their uropygial gland, it has been hypothesized, but never tested, that the number of feather mites increases with the size...
متن کاملOxidative stress and information content of black and yellow plumage coloration: an experiment with greenfinches.
Carotenoid and melanin pigments in the plumage of birds are hypothesized to be sensitive to oxidative stress. We manipulated oxidative status of captive greenfinches (Carduelis chloris L.) by the administration of buthionine sulfoximine (BSO), a selective inhibitor of the synthesis of glutathione (GSH), an intracellular antioxidant. Half of the birds in the treated group, as well as in the cont...
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ژورنال
عنوان ژورنال: Scientific Reports
سال: 2021
ISSN: 2045-2322
DOI: 10.1038/s41598-021-92598-x