Nom du corpus

Corpus Systématique Animale

Titre du document

Variation in diet of yellow perch ( Perca flavescens ) in a Quebec reservoir

Lien vers le document
Éditeur
Springer (journals)
Langue(s) du document
Anglais
Type de document
Research-article
Mots-clés d'auteur
  • Perca flavescens
  • zooplankton prey
  • size selectivity
  • species selectivity
  • individual differences
  • clumping in gut
  • clumping in nature
Nom du fichier dans la ressource
Poissons_v2b_005050
Auteur(s)
  • Francois Chabot 1
  • Edward J. Maly 1
Affiliation(s)
  • 1) Biology Department, Concordia University, 1455 de Maisonneuve Blvd., H3G 1M8, W. Montreal, Quebec, Canada
Résumé

We determined the diet of 1 to 1 1/2 a old yellow perch (Perca flavescens) in a Quebec reservoir, relative to occurrences of available prey species and size classes of prey. We used Schindler-Patalas trap samples taken over four 24-h intervals between June and September 1981 to determine size distribution of available prey species. Relative abundances and size distribution of ingested prey species were determined from examination of gut contents of perch trapped by gill nets during the same time intervals. Electivity values of different prey species and of different size classes of prey were determined. Larger zooplankton prey (e.g.Epischura andLeptodora) were generally preferred but there was considerable variability in diet among individual fish that cannot be explained by patterns of prey availability. Within particular size classes of prey, perch have definite preferences, e.g. when perch consume small prey, they preferBosmina to other similar-sized prey. These results are discussed in relation to theories attempting to describe and predict feeding patterns of planktivorous fish species.

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 - psychologie. psychophysiologie
Catégories Scopus
  • 1 - Life Sciences ; 2 - Agricultural and Biological Sciences ; 3 - Aquatic Science
Catégories WoS
  • 1 - science ; 2 - marine & freshwater biology
Identifiant ISTEX
08FCBA09E660D70811721C9AF725D424259476DB
Revue

Hydrobiologia

Année de publication
1986
Présence de XML structuré
Non
Version PDF
1.3
Score qualité du texte
7.828
Sous-corpus
  • Poissons
Type de publication
Journal
ark:/67375/1BB-9K0ZT83H-Z
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