Results 31 to 40 of about 19,383 (290)

Ultraviolet plumage colors predict mate preferences in starlings [PDF]

open access: yesProceedings of the National Academy of Sciences, 1997
Avian plumage has long been used to test theories of sexual selection, with humans assessing the colors. However, many birds see in the ultraviolet (<400 nm), to which humans are blind. Consequently, it is important to know whether natural variation in UV reflectance from plumage functions in sexual signaling.
Bennett, ATD   +3 more
openaire   +2 more sources

Macroevolutionary bursts and constraints generate a rainbow in a clade of tropical birds

open access: yesBMC Evolutionary Biology, 2020
Background Bird plumage exhibits a diversity of colors that serve functional roles ranging from signaling to camouflage and thermoregulation. However, birds must maintain a balance between evolving colorful signals to attract mates, minimizing ...
Jon T. Merwin   +2 more
doaj   +1 more source

Sexually selected male plumage color is testosterone dependent in a tropical passerine bird, the red-backed fairy-wren (Malurus melanocephalus). [PDF]

open access: yesPLoS ONE, 2011
BACKGROUND: Sexual signals, such as bright plumage coloration in passerine birds, reflect individual quality, and testosterone (T) may play a critical role in maintaining signal honesty.
Willow R Lindsay   +2 more
doaj   +1 more source

Sequence Variation of Melanocortin 1 Receptor (MC1R) Gene and Association with Plumage Color in Domestic Geese

open access: yesThe Journal of Poultry Science, 2014
In contrast to other domestic and wild animals, the genetic variation of MC1R gene and association with plumage color has not been investigated in domestic goose.
Jing Huang   +6 more
doaj   +1 more source

Growth and slaughtering performance, carcase fleshiness and meat quality according to the plumage colour in Padovana male chickens slaughtered at 18 weeks of age [PDF]

open access: yes, 2019
The aim of this trial was to investigate on the growth and meat quality of Padovana male chickens with different plumage varieties, chamois (PC - light brown feathers with white edge), silver (PS - white feathers with black edge), and their cross.
Rizzi, Chiara
core   +1 more source

Assessment of the Expression of Phenotypic Traits in Male and Female Indigenous Chickens (Gallus gallus domesticus L.) in Rajshahi, Bangladesh [PDF]

open access: yesJournal of Genetic Resources
This study aimed to identify and describe phenotypic traits of indigenous chicken (Gallus gallus domesticus L.) populations in five market sites in Rajshahi City, Bangladesh: Shaheb Bazar (S1), Court Bazar (S2), Vodra Bazar (S3), Binodpur Bazar (S4), and
Md. Rahman, M Rahman, Saiful Faruki
doaj   +1 more source

Plumage Variation, Plasma Steroids and Social Dominance in Male House Finches [PDF]

open access: yes, 1994
In male House Finches (Carpodacusm exicanus), the extent and color of plumage varies depending on access to carotenoid pigments. Colorful males exhibit extensive red pigmentation, while less colorful (i.e., drab ) males exhibit carotenoid pigmentation
Belthoff, James R.   +2 more
core   +2 more sources

AASLD practice guidance on drug, herbal, and dietary supplement–induced liver injury

open access: yes, 2022
Hepatology, EarlyView.
Robert J. Fontana   +6 more
wiley   +1 more source

Investigation of MC1R SNPs and Their Relationships with Plumage Colors in Korean Native Chicken [PDF]

open access: yesAsian-Australasian Journal of Animal Sciences, 2013
The melanocortin 1 receptor (MC1R) gene is related to the plumage color variations in chicken. Initially, the MC1R gene from 30 individuals was sequenced and nine polymorphisms were obtained. Of these, three and six single nucleotide polymorphisms (SNPs)
M. R. Hoque   +5 more
doaj   +1 more source

De novo Development and Characterization of Tetranucleotide Microsatellite Loci Markers from a Southeastern Population of the House Finch (Haemorhous mexicanus) [PDF]

open access: yes, 2019
Microsatellites are short tandem repeats (e.g. TAGATAGA) of base pairs in a species’ genome. High mutation rates in these regions produce variation in the number of repeats across individuals that can be utilized to study patterns of population- and ...
Barron, Douglas G   +2 more
core   +3 more sources

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