Nom du corpus

Corpus Systématique Animale

Titre du document

Aspects of Common Loon ( Gavia immer ) feeding biology on its breeding ground

Lien vers le document
Éditeur
Springer (journals)
Langue(s) du document
Anglais
Type de document
Research-article
Nom du fichier dans la ressource
Oiseaux_v2b_02869
Auteur(s)
  • J. F. Barr
Affiliation(s)
  • J. F. Barr, 91 Forest St. Guelph, N1G 1J3, Ontario, Canada
Résumé

Field studies and experiments with hand-reared loons found loons to be facultative predators, foraging on a variety of fishes, crustateans and other aquatic animals. Loons selected certain species and size of prey when present, favoured fusiform shapes and atypical, erratic swimming behavior, but took the most readily available and susceptible to capture, often yellow perch. Chick feeding behaviour developed during the first 8 wks after which physical maturity permitted independent feeding. Juveniles resembled adults in size and shape by wk-11, and were capable of catching all of their own food. Evidence suggests that loons are not harmful to sport fisheries and may ba beneficial by supressing species competing with game fish. Territories averaged 72 ha, and food may be a determinant for maximum size. Based on the average amount of food required by a chick for its first 15 wks (53 kg), plus the daily consumption of older birds (960) g, a pair of loons rearing 2 chicks could remove about 423 kg of food during 5.5 months on territory.

Catégories Science-Metrix
  • 1 - natural sciences
  • 2 - biology
  • 3 - marine biology & hydrobiology
Catégories INIST
  • 1 - sciences appliquees, technologies et medecines
  • 2 - sciences biologiques et medicales
  • 3 - sciences biologiques fondamentales et appliquees. psychologie
  • 4 - ethologie animale
Catégories Scopus
  • 1 - Life Sciences ; 2 - Agricultural and Biological Sciences ; 3 - Aquatic Science
Catégories WoS
  • 1 - science ; 2 - marine & freshwater biology
Identifiant ISTEX
A479AC83C74ED1A972F1F62982766FC69F1C566A
Revue

Hydrobiologia

Année de publication
1996
Présence de XML structuré
Non
Version PDF
1.3
Score qualité du texte
9.052
Sous-corpus
  • Oiseaux
Type de publication
Journal
ark:/67375/1BB-2SF3J467-1
Powered by Lodex 9.3.8