ommochrome

ommochrome

▪ biological pigment
      any of a group of biological pigments (biochromes) conspicuous in the eyes of insects and crustaceans as well as in the changeable chromatophores (pigment-containing cells) in the skin of cephalopods. Although ommochromes, which are derived from the breakdown of the amino acid tryptophan, are responsible for the colours of insect eyes, they are not known to be involved directly in photoreception. In the changing integumentary cells of cephalopods, however, they may contribute to adaptive responses.

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Universalium. 2010.

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  • Ommochrome —   [zu griechisch ómma »Auge« und chrõma »Farbe«], Gruppe tierischer Farbstoffe, die in den Augen und der Haut von Krebsen und Insekten vorkommen. Ommochrome können gelb, orange, braun oder schwarz sein und liegen in den Geweben gewöhnlich an… …   Universal-Lexikon

  • Ommochrome — (or visual pigment) refers to several biological pigments that occur in the eyes of crustaceans and insects. The eye color is determined by the ommochromes. Ommochromes are also found in the chromatophores of cephalopods, and in spiders.[1]… …   Wikipedia

  • ommochrome — n. [Gr. omma, eye; chroma, color] A group of pigments, products of tryptophane metabolism, found in eyes and epidermis of certain invertebrates; it is apparently not involved in the visual process …   Dictionary of invertebrate zoology

  • Ommochrome — Om|mo|chro|me die (Plur.) <zu gr. chrõma »Farbe«> tierische Farbstoffe, die in den Augen u. in der Haut von Krebsen u. Insekten vorkommen …   Das große Fremdwörterbuch

  • ommochrome — om·mo·chrome …   English syllables

  • ommochrome — ˈäməˌkrōm noun Etymology: ommo (from Greek omma eye) + chrome : any of various pigments derived from tryptophan and found especially in the eyes of insects …   Useful english dictionary

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  • Misumena Vatia — Misumena vatia …   Wikipédia en Français

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