Nom du corpus

Corpus Systématique Animale

Titre du document

Phenolic compounds of willow bark as deterrents against feeding by mountain hare

Lien vers le document
Éditeur
Springer (journals)
Langue(s) du document
Anglais
Type de document
Research-article
Nom du fichier dans la ressource
Mammiferes_v2b_01780
Auteur(s)
  • J. Tahvanainen 1
  • E. Helle 1
  • R. Julkunen-Tiitto 1
  • A. Lavola 1
Affiliation(s)
  • 1) Department of Biology, University of Joensuu, P.O. Box 111, SF-80101, Joensuu, Finland
Résumé

Overwintering mountain hares (Lepus timidus) fed selectively on the shoots of a number of northern willow (Salix spp.) species. The hares preferred certain species over others and mature shoots over juvenile ones. There was a negative correlation between the phenolic glycoside concentration in the twigs and the hares' feeding. This correlation was substantiated by feeding experiments in which oat grains treated with purified phenoglycoside and catechin fractions of willow bark were offered along with untreated control oat grains to free-ranging mountain hares. Both fractions in concentrations normally found in willow twigs inhibited hare feeding. The results suggest that these phenolic compounds play a crucial role in the building up of resistance patterns among the willows. The decline in resistance in mature shoots of tall willows indicates that the juvenile resistance can be, perhaps secondarily, an adaptation against mammals browsing from ground level. Accordingly, low willow species retain a high level of resistance also in maturity.

Catégories Science-Metrix
  • 1 - natural sciences
  • 2 - biology
  • 3 - ecology
Catégories INIST
  • 1 - sciences appliquees, technologies et medecines
  • 2 - sciences biologiques et medicales
  • 3 - sciences biologiques fondamentales et appliquees. psychologie
Catégories Scopus
  • 1 - Life Sciences ; 2 - Agricultural and Biological Sciences ; 3 - Ecology, Evolution, Behavior and Systematics
Catégories WoS
  • 1 - science ; 2 - ecology
Identifiant ISTEX
10FA8441BC152D2BB38C647098FB59C565F47CB9
Revue

Oecologia

Année de publication
1985
Présence de XML structuré
Non
Version PDF
1.3
Score qualité du texte
7.191
Sous-corpus
  • Mammiferes
Type de publication
Journal
ark:/67375/1BB-H650J1KR-F
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