You are here

FAU Collections » FAU Research Repository » FAU Theses and Dissertations

CAROTENOID PIGMENTATION AND METABOLISM IN THE BLUE CRAB, CALLINECTES SAPIDUS RATHBUN

Download pdf | Full Screen View

Date Issued:
1978
Summary:
Carotenoid composition, tissue distribution, deposition in the exoskeleton, and assimilation were studied in the blue crab, Callinectes sapidus. Carotenoids identified were: alpha-carotene; beta-carotene; lutein; 'carcinoxanthin'; isocryptoxanthin; echinenenone; canthaxanthin; astaxanthin; and, astaxanthin esters. Tentative identification was made for a-carotene, 8-carotene-monoepoxide, and phoenicoxanthin. The occurrence of 'carcinoxanthin', in high concentration, in antennae and eyestalks, is noted and discussed. Hepatopancreas yields mainly Bcarotene, with more oxidized 'intermediates' and astaxanthin being localized in the hypodermis. Exoskeletal carotenoids, both free and conjugated to protein, were shown to be bound to chitin. Exoskeletal carotenoprotein was shown to contain free astaxanthin as the only carotenoid present. External coloration was analyzed and the underlying pigments identified. Starved crabs with carotenoid-depleted hepatopancreas were shown to assimilate beta-carotene, but not astaxanthin, from test diets. Possible metabolic pathways and functions of carotenoids in Crustacea are discussed.
Title: CAROTENOID PIGMENTATION AND METABOLISM IN THE BLUE CRAB, CALLINECTES SAPIDUS RATHBUN.
174 views
35 downloads
Name(s): Louda, J. William
Florida Atlantic University, Degree Grantor
Type of Resource: text
Genre: Electronic Thesis Or Dissertation
Issuance: monographic
Date Issued: 1978
Publisher: Florida Atlantic University
Place of Publication: Boca Raton, Fla.
Physical Form: application/pdf
Extent: 104 p.
Language(s): English
Summary: Carotenoid composition, tissue distribution, deposition in the exoskeleton, and assimilation were studied in the blue crab, Callinectes sapidus. Carotenoids identified were: alpha-carotene; beta-carotene; lutein; 'carcinoxanthin'; isocryptoxanthin; echinenenone; canthaxanthin; astaxanthin; and, astaxanthin esters. Tentative identification was made for a-carotene, 8-carotene-monoepoxide, and phoenicoxanthin. The occurrence of 'carcinoxanthin', in high concentration, in antennae and eyestalks, is noted and discussed. Hepatopancreas yields mainly Bcarotene, with more oxidized 'intermediates' and astaxanthin being localized in the hypodermis. Exoskeletal carotenoids, both free and conjugated to protein, were shown to be bound to chitin. Exoskeletal carotenoprotein was shown to contain free astaxanthin as the only carotenoid present. External coloration was analyzed and the underlying pigments identified. Starved crabs with carotenoid-depleted hepatopancreas were shown to assimilate beta-carotene, but not astaxanthin, from test diets. Possible metabolic pathways and functions of carotenoids in Crustacea are discussed.
Identifier: 13918 (digitool), FADT13918 (IID), fau:10743 (fedora)
Note(s): Thesis (M.S.)--Florida Atlantic University, 1978.
Subject(s): Crustacea--Physiology
Carotenoids
Held by: Florida Atlantic University Libraries
Persistent Link to This Record: http://purl.flvc.org/fcla/dt/13918
Sublocation: Digital Library
Use and Reproduction: Copyright © is held by the author with permission granted to Florida Atlantic University to digitize, archive and distribute this item for non-profit research and educational purposes. Any reuse of this item in excess of fair use or other copyright exemptions requires permission of the copyright holder.
Use and Reproduction: http://rightsstatements.org/vocab/InC/1.0/
Host Institution: FAU
Is Part of Series: Florida Atlantic University Digital Library Collections.