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Keywords: melanin
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Journal Articles
J Exp Biol (2018) 221 (4): jeb174656.
Published: 28 February 2018
... colouration Melanin FDTD Thin films Iridescence Many bird species feature brightly coloured plumage owing to pigments and/or structural effects. The most common pigments of bird feathers are the carotenoids and melanins. Carotenoids strongly absorb in the blue to green wavelength range, thus...
Includes: Supplementary data
Journal Articles
J Exp Biol (2013) 216 (23): 4358–4364.
Published: 1 December 2013
... of Biologists Ltd 2013 barbs barbules melanin thin films vision We obtained feathers of various Amazon parrots [Natterer's Amazon, Amazona ochrocephala nattereri (Finsch 1865); Panama yellow-headed Amazon, Amazona ochrocephala panamensis (Cabanis 1874); and orange-winged Amazon, Amazona...
Includes: Supplementary data
Journal Articles
J Exp Biol (2010) 213 (18): 3127–3130.
Published: 15 September 2010
...Ismael Galván; Carlos Alonso-Alvarez SUMMARY Conspicuous traits produced by melanin deposition in integuments are often involved in visual communication. The information content of melanin-based signals is unclear as their expression is tightly controlled by genes and, apparently, is less dependent...
Journal Articles
J Exp Biol (2006) 209 (24): 4938–4945.
Published: 15 December 2006
... populations. Here, inter-population crosses demonstrate a sex-ratio bias in the same direction as intra-population crosses of the sire population. About 20% of the male progeny of melanic sires express the wild-type phenotype. These silver F1 males sire only silver offspring, suggestive of loss of the melanin...
Journal Articles
J Exp Biol (2006) 209 (12): 2368–2376.
Published: 15 June 2006
... selected traits I review the evolution of colour patterns in birds with a view to assessing the magnitude of plastic responses in their development, and to ask how such responses may have influenced genetic evolution. The common colour pigments in birds are carotenoids and melanins. Both are used in social...
Journal Articles
J Exp Biol (2005) 208 (3): 433–438.
Published: 1 February 2005
... visual systems, our results demonstrate a novel use of melanin in geotactic behavior. Wild-type and mutant larvae were fixed in cold 70% ethanol at 4°C for 1 h. Larvae were incubated in 4 mmol l -1 KH 2 PO 4 , 11 mmol l -1 Na 2 HPO 4 with or without 3.8 mmol l -1 l -dopa (Sigma) for 4 h. Unreacted...
Journal Articles
J Exp Biol (2004) 207 (2): 285–293.
Published: 15 January 2004
...Michael Butler; Amy S. Johnson SUMMARY Melanin has been associated with increased resistance to abrasion,decreased wear and lowered barb breakage in feathers. But, this association was inferred without considering barb position along the rachis as a potentially confounding variable. We examined...