Document Detail


Lipid composition, fatty acid profiles, and lipid-soluble antioxidants of eggs of the Hermann's tortoise (Testudo hermanni boettgeri).
MedLine Citation:
PMID:  11429779     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
The major lipid classes, their fatty acid profiles, and the amounts of the lipid-soluble components, vitamin E, vitamin A, and carotenoids, were determined for egg yolks of the Hermann's tortoise (Testudo hermanni boettgeri) with the aim of identifying any features that may potentially impair the adaptation of this endangered species to deteriorations in habitat. Total lipid formed 16% (wt/wt) of the fresh yolk and consisted of (wt/wt) 74.4% triacylglycerol, 18.1% phospholipid, 3.0% cholesteryl ester, and 3.4% free cholesterol. Despite a diet based on green plants, contributing alpha-linolenic acid as the main polyunsaturate, this fatty acid formed only 3.8% of the total mass of fatty acid of the total lipid. The main acyl component of the yolk lipids was the monounsaturated fatty acid, oleic acid, which formed 45.6% of the total. The most striking feature of the yolk composition was the almost complete lack of two nutrients, docosahexaenoic acid and vitamin A, which are essential for the developing embryo. Although it is feasible that the embryo synthesizes docosahexaenoic acid from yolk-derived alpha-linolenic acid and also converts yolk-derived beta-carotene to vitamin A, the yolk is poorly endowed with both these precursors. The stringencies displayed by the yolk composition in this species may limit the flexibility to adapt to changes in the availability of food items when the habitat is threatened. Zoo Biol 20:75-87, 2001. Copyright 2001 Wiley-Liss, Inc.
Authors:
Brian K. Speake; Peter F. Surai; Mauvis Gore
Related Documents :
6020409 - Fatty acids of extractable and bound lipids of rhodomicrobium vannielii.
3226229 - Rapid separation of neutral lipids, free fatty acids and polar lipids using prepacked s...
21282499 - Omega-3 fatty acids prevent pressure overload-induced cardiac fibrosis through activati...
16661529 - Changes in membrane lipids of roots associated with changes in permeability: i. effects...
10577709 - The fatty acid and monosaccharide compositions of three neutral and three phosphorylate...
22319559 - Tissue-specific whole transcriptome sequencing in castor, directed at understanding tri...
17547419 - Phenolics in maize genotypes differing in susceptibility to gibberella stalk rot (fusar...
18600929 - Molecular imprinting of proteins and other macromolecules resulting in new adsorbents.
19419669 - Exploratory assessment of perfluorinated compounds and human thyroid function.
Publication Detail:
Type:  JOURNAL ARTICLE    
Journal Detail:
Title:  Zoo biology     Volume:  20     ISSN:  1098-2361     ISO Abbreviation:  Zoo Biol.     Publication Date:  2001  
Date Detail:
Created Date:  2001-Jun-28     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  8807837     Medline TA:  Zoo Biol     Country:  -    
Other Details:
Languages:  ENG     Pagination:  75-87     Citation Subset:  -    
Affiliation:
Department of Biochemistry and Nutrition, Scottish Agricultural College, Ayr, Scotland.
Export Citation:
APA/MLA Format     Download EndNote     Download BibTex
MeSH Terms
Descriptor/Qualifier:

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


Previous Document:  Non-invasive treatments of luteinizing hormone-releasing hormone for inducing spermiation in America...
Next Document:  Disease risk and inter-institutional transfer of specimens in cooperative breeding programs: Herpes ...