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CAROTENOID PIGMENTATION AND METABOLISM IN THE BLUE CRAB, CALLINECTES SAPIDUS RATHBUN
Title
CAROTENOID PIGMENTATION AND METABOLISM IN THE BLUE CRAB, CALLINECTES SAPIDUS RATHBUN.
Creator
Louda, J. William, Florida Atlantic University
Abstract/Description
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,...
Show moreCarotenoid 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.
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Date Issued
1978
PURL
http://purl.flvc.org/fcla/dt/13918
Subject Headings
Crustacea--Physiology, Carotenoids
Format
Document (PDF)
Evidence for behavioral sensitivity to near-UV light in the deep-sea crustacean Systellaspis debilis
Title
Evidence for behavioral sensitivity to near-UV light in the deep-sea crustacean Systellaspis debilis.
Creator
Frank, Tamara M., Widder, Edith A., Harbor Branch Oceanographic Institute
Date Issued
1994
PURL
http://purl.flvc.org/FCLA/DT/3318840
Subject Headings
Crustacea, Ultraviolet radiation--Physiological effect, Crustacea--Physiology, Electrophysiology --Technique, Crustacea--Behavior
Format
Document (PDF)