A Study of Pigments from Red, Brown, and Buff Feathers and Hair

Smyth,; Jw, Porter; Bb, Bohren

doi:10.1086/physzool.24.3.30152114

Cited by 18 publications

(6 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…It is probable that there are many pigments of this class and that they may be derived by different methods from more than one source. The occurrence of differently coloured pigments obviously closely related supports this view (Clemo & Duxbury, 1950;Smyth, Porter & Bohren, 1951;Nickerson, 1946;Figg, 1939Figg, , 1940. Melanin is often bound to proteins to give melanoproteins.…”

Section: Tanning Ofproteinsmentioning

confidence: 73%

Chemistry of insect cuticle. 3. Hardening and darkening of the cuticle

Hackman

1953

Biochemical Journal

View full text Add to dashboard Cite

Section: Tanning Ofproteinsmentioning

confidence: 73%

Chemistry of insect cuticle. 3. Hardening and darkening of the cuticle

Hackman

1953

Biochemical Journal

View full text Add to dashboard Cite

“…500). Specimens of Cyclothone, preserved in formalin for I month, were extracted in a like manner (Gortner, 19II;Lea, 1945;Serra, 1946;Smyth, Porter & Bohren, 1951).…”

Section: Teleostsmentioning

confidence: 99%

Observations on luminescence in pelagic animals

Nicol

1958

J. Mar. Biol. Ass.

View full text Add to dashboard Cite

Luminescence is very common among marine animals, and many species possess highly developed photophores or light-emitting organs. It is probable, therefore, that luminescence plays an important part in the economy of their lives. A few determinations of the spectral composition and intensity of light emitted by marine animals are available (Coblentz & Hughes, 1926; Eymers & van Schouwenburg, 1937; Clarke & Backus, 1956; Kampa & Boden, 1957; Nicol, 1957b, c, 1958a, b). More data of this kind are desirable in order to estimate the visual efficiency of luminescence, distances at which luminescence can be perceived, the contribution it makes to general back-ground illumination, etc. With such information it should be possible to discuss more profitably such biological problems as the role of luminescence in intraspecific signalling, sex recognition, swarming, and attraction or repulsion between species. As a contribution to this field I have measured the intensities of light emitted by some pelagic species of animals.

show abstract

“…Data reported here relate primarily to the concentration of melanin on a background of white light reflected by the feather microstructure. Of the several fractions of melanin that can be separated by solvent extractability and absorption spectrophotometry, data reported here relate primarily to acid-soluble and acid-insoluble brown fractions (Smyth et al, 1951). Thus, over the range from 350 to 600 nm in which the absorbance of isolated pigment decreases almost linearly, reflectance spectra reported here showed a corresponding increase.…”

Section: Discussionmentioning

confidence: 58%

Reflectance of Chicken Feathers in Relation to Sex-Linked Coloration

Swatland

Leeson

1988

Poultry Science

View full text Add to dashboard Cite

Reflectance spectra of down feathers from the heads of color-sexed chicks from broiler and layer strains were measured with a fiber-optic spectrophotometer. For both strains, the maximum divergence between sexes was at 350 nm (for broilers and layers respectively, t = 10 and t = 5, P<.005, n = 20) but significant divergence continued into the blue part of the spectrum (to around 500 nm). Mature feathers from Light Sussex (white), Rhode Island Red (red-brown), and Bantam (pale and dark bars on feathers) birds were measured as examples of deeper or more highly contrasting pigmentation. Divergences between spectra were found at higher wavelengths for the adult feathers than for color-sexed chick feathers (at 530 nm for white vs. red-brown, and around 700 nm for pale vs. dark bars. (

show abstract

A Study of Pigments from Red, Brown, and Buff Feathers and Hair

Cited by 18 publications

References 0 publications

Chemistry of insect cuticle. 3. Hardening and darkening of the cuticle

Chemistry of insect cuticle. 3. Hardening and darkening of the cuticle

Observations on luminescence in pelagic animals

Reflectance of Chicken Feathers in Relation to Sex-Linked Coloration

Contact Info

Product

Resources

About