Nom du corpus

Corpus Systématique Animale

Titre du document

?-carotene and retinoids in eggs of Great Blue Herons ( Ardea herodias ) in relation to St Lawrence River contamination

Lien vers le document
Éditeur
Springer (journals)
Langue(s) du document
Anglais
Type de document
Research-article
Mots-clés d'auteur
  • biomarkers
  • retinoids
  • ?-carotene
  • heron
  • PCBs
Nom du fichier dans la ressource
Oiseaux_v2b_02915
Auteur(s)
  • M. H. Boily 1
  • L. Champoux 2
  • D. H. Bourbonnais 1
  • J. L. Des Granges 2
  • J. Rodrigue 2
  • P. A. Spear 1
Affiliation(s)
  • 1) Département des Sciences Biologiques, Université du Québec à Montréal, Succ. ‘A’, CP 8888, H3C 3P8, Montréal, Québec, Canada
  • 2) Environnement Canada Service Canadien de la Faune, CP 10100, G1V 4H5, SteFoy, Québec, Canada
Résumé

: The potential use of retinoids and ?-carotene as biomarkers in the eggs of the Great Blue Heron was investigated. In the spring of 1991, 65 eggs were collected from nine heronries (seven along the St Lawrence River and two reference sites). A method was specifically developed for the extraction and analysis of ?-carotene and the retinoids in heron egg yolks by reversed-phase HPLC. When results were expressed either as the molar ratio of retinol: retinyl palmitate or as retinyl palmitate concentration, significant differences were found between colonies; however, retinyl palmitate concentration was deemed the better biomarker because it was not significantly influenced by embryonic stage of development. Retinyl palmitate concentrations in freshwater colonies were negatively related to PCB congeners Nos 105 and 118 as well as their TCDD-EQ values (p < 0.02, r 2=0.78). Egg tetrachloro-mono-ortho biphenyl concentrations were also negatively related to retinyl palmitate (p < 0.005, r 2=0.90). With the exception of the two mono-ortho co-planar congeners detected in the present study, the contamination levels found in heron eggs were well below those found for other bird species in the Great Lakes area and, so far, no detrimental effects have been reported in Great Blue Heron populations in Quebec. These results suggest that retinyl palmitate may be useful as a sensitive and non-invasive biomarker for monitoring organochlorine contaminant effects in the Great Blue Heron in freshwater sites.

Catégories Science-Metrix
  • 1 - health sciences
  • 2 - biomedical research
  • 3 - toxicology
Catégories INIST
  • 1 - sciences appliquees, technologies et medecines
  • 2 - sciences biologiques et medicales
  • 3 - sciences biologiques fondamentales et appliquees. psychologie
Catégories Scopus
  • 1 - Physical Sciences ; 2 - Environmental Science ; 3 - Health, Toxicology and Mutagenesis
  • 1 - Physical Sciences ; 2 - Environmental Science ; 3 - Management, Monitoring, Policy and Law
  • 1 - Life Sciences ; 2 - Pharmacology, Toxicology and Pharmaceutics ; 3 - Toxicology
  • 1 - Health Sciences ; 2 - Medicine ; 3 - General Medicine
Catégories WoS
  • 1 - science ; 2 - toxicology
  • 1 - science ; 2 - environmental sciences
  • 1 - science ; 2 - ecology
Identifiant ISTEX
3299355F710D2EA0675130FFABAF50CF5A9238A3
Revue

Ecotoxicology

Année de publication
1994
Présence de XML structuré
Non
Version PDF
1.3
Score qualité du texte
9.76
Sous-corpus
  • Oiseaux
Type de publication
Journal
ark:/67375/1BB-BF32GD7G-S
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