Results 31 to 40 of about 2,923 (243)

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

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

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

Social environment affects acquisition and color of structural nuptial plumage in a sexually dimorphic tropical passerine. [PDF]

open access: yesPLoS ONE, 2012
Structural colors result from the physical interaction of light with organic materials of differing refractive indexes organized at nanoscale dimensions to produce significant interference effects.
Rafael Maia   +3 more
doaj   +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

Disentangling the mechanisms of signal evolution in Tyrannidae flycatchers, part II: plumage elaboration evolved with migration behavior, but is also affected by diet, climate, and drift

open access: yesJournal of Field Ornithology, 2023
Animal coloration is an important communication signal that varies among taxa and affects survival and reproduction. Species-specific color is influenced by a variety of factors including phylogeny, predation, sexual selection, light and resource ...
Sydney M Miller   +3 more
doaj   +1 more source

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

Qualitative traits and genetic characterization of native chicken (Gallus gallus domesticus) in selected areas of Eastern and Western Samar, Philippines

open access: yesAnnals of Tropical Research, 2020
The Philippines has a number of chicken genetic groups, mostly of non-descript and indigenous type. In view of the need to expand the information on native chicken diversity, this study was conducted to identify distinct qualitative traits and estimate ...
Cyrill John P. Godinez   +2 more
doaj   +1 more source

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