Journal Article

On the bioconversion of dietary carotenoids to astaxanthin in the marine copepod, Tigriopus californicus

Ryan J Weaver, Paul A Cobine and Geoffrey E Hill

in Journal of Plankton Research

Volume 40, issue 2, pages 142-150
Published in print March 2018 | ISSN: 0142-7873
Published online January 2018 | e-ISSN: 1464-3774 | DOI: https://dx.doi.org/10.1093/plankt/fbx072
On the bioconversion of dietary carotenoids to astaxanthin in the marine copepod, Tigriopus californicus

More Like This

Show all results sharing these subjects:

  • Marine and Estuarine Biology
  • Zoology and Animal Sciences

GO

Show Summary Details

Preview

Abstract

Red carotenoid-based coloration is widely distributed across marine and terrestrial animals and has taken a prominent role in studies of how phenotypic traits evolve in response to natural and sexual selection. Key to these studies is an understanding of the physiological mechanisms involved in the production of red coloration, yet a model laboratory system for such work is lacking. The marine copepod Tigriopus californicus is used as a model for studies in ecotoxicology, genetics and physiology, but the mechanisms involved in the production of its bright red coloration have not been well studied. Like nearly all animals that display red carotenoid coloration, T. californicus likely convert yellow carotenoids present in their algal diet to red carotenoids. We conducted precursor/product feeding experiments to demonstrate that T. californicus bioconverts dietary carotenoids to the red carotenoid, astaxanthin. Copepods were fed carotenoids that are precursors to specific astaxanthin bioconversion pathways. We found that copepods from each precursor pigment group produced astaxanthin, and that the amount produced depended on which carotenoid was supplemented.

Keywords: carotenoid; copepod; astaxanthin; bioconversion; Tigriopus

Journal Article.  5404 words.  Illustrated.

Subjects: Marine and Estuarine Biology ; Zoology and Animal Sciences

Full text: subscription required

How to subscribe Recommend to my Librarian

Users without a subscription are not able to see the full content. Please, subscribe or login to access all content. subscribe or login to access all content.