Description

Vertebrates cannot synthesize carotenoid pigments de novo, so to produce carotenoid-based coloration they must ingest carotenoids. Most songbirds that deposit red carotenoids in feathers, bills, eyes, or skin ingest only

Vertebrates cannot synthesize carotenoid pigments de novo, so to produce carotenoid-based coloration they must ingest carotenoids. Most songbirds that deposit red carotenoids in feathers, bills, eyes, or skin ingest only yellow or orange dietary pigments, which they oxidize to red pigments via a ketolation reaction. It has been hypothesized that carotenoid ketolation occurs in the liver of vertebrates, but this hypothesis remains to be confirmed.

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Date Created
  • 2015-07-01
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  • Text
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    Identifier
    • Digital object identifier: 10.1086/681992
    • Identifier Type
      International standard serial number
      Identifier Value
      1522-2152
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    Ge, Zhiyuan, Johnson, James D., Cobine, Paul A., McGraw, Kevin J., Garcia, Rosana, & Hill, Geoffrey E. (2015). High Concentrations of Ketocarotenoids in Hepatic Mitochondria of Haemorhous mexicanus. PHYSIOLOGICAL AND BIOCHEMICAL ZOOLOGY, 88(4), 444-450. http://dx.doi.org/10.1086/681992

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