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Re: pigment stability
From: "A. H. Brush" <BRUSH@UConnVM.UConn.Edu>
> Ray McAllister posted a question regarding the stability of
> integumentary colors. Carotenoids, of course, are not very stable (as
> are most other highly unsaturated molecules. Feather caroteonids, for
> example, can be destroyed by exposure to sunlight (even in the dry
> feather). Melanins, a very common pigment also fades or abrades. This
> has been sstudied in birds but not to my knowledge in reptiles.
In fact this is a significant problem with museum specimens of birds.
Several bird species have been misidentified, and new one erroneously
described because the type specimen had faded. [This is, actually,
why the matter has been studied so much].
The peace of God be with you.