- high
levels of
psittacofulvin resist feather-degrading
Bacillus licheniformis better than
white ones. Both
carotenoids and
psittacofulvins have narrow-band...
-
provides the grey
colour in the feathers, eyes, beak, and feet), and
psittacofulvins (which
provide the
yellow colour on the face and tail and the orange...
- zeaxanthin,
lutein Proteinaceous: phytochrome,
phycobiliproteins Psittacofulvins: a
class of red and
yellow pigments unique to
parrots Turacin and Turacoverdin:...
-
colours of so many parrots.
Colourful feathers with high
levels of
psittacofulvin resist the feather-degrading
bacterium Bacillus licheniformis better...
- orange);
other pigments occur only in
certain taxa – the
yellow to red
psittacofulvins (found in some parrots) and the red
turacin and
green turacoverdin...
- a
number of
pigments apart from melanins: carotenoids, porphyrins,
psittacofulvins, pterins, etc. Most commonly,
reptiles with a
condition homologous...
-
resonance by Jack
Peisach first with
Blumberg and
later with Mims.
Psittacofulvin, a
brightly colored red and
yellow pigment unique to
parrots Turacoverdin...
- have
their psittacofulvin (yellow and orange)
pigments deactivated by the blue gene,
resulting in ****atiels with
absolutely no
psittacofulvin pigments...
-
coloration is due to
pigments and
structural colors in the feathers.
Psittacofulvins are the
pigment responsible for the
bright red, orange, and yellow...
-
licheniformis degrades β-keratin.
There is
evidence that red feathers, with
psittacofulvin, are more
resistant to degradation.
Subtilisin Carlsberg, a
serine protease...
