Nom du corpus

Corpus Systématique Animale

Titre du document

Interpreting patterns of resource utilization: randomness and selectivity in pollen feeding by adult hoverflies

Lien vers le document
Éditeur
Springer (journals)
Langue(s) du document
Anglais
Type de document
Research-article
Mots-clés d'auteur
  • Resource partitioning
  • Mechanistic approach
  • Syrphidae
  • Pollen
  • Flower colour
Nom du fichier dans la ressource
Insectes_v2b_01810
Auteur(s)
  • J. R. Haslett
Affiliation(s)
  • Department of Zoology, University of Oxford, Oxford, UK
Résumé

Adult syrphid flies feed primarily on pollen and nectar from flowers and may be regarded as suitable models for the investigation of resource partitioning in a plant/pollinator system. The present study examines the extent to which a small group of six species are selective in their diets and investigates the role of flower colour as a means by which such selectivity may occur. Flower feeding preferences were determined by pollen analyses of gut contents and an extensive flower sampling programme was under-taken to provide information on the relative abundances of the food resources available to the insects. Flower colours were defined by their reflectance spectra, and the inherent colour preferences of the flies were determined by field experiments in which natural flowers were simulated using painted plastic discs. The results reveal that some hoverfly species are highly selective in their pollen diets, while others have a more generalist approach to their foraging. The division of flower resources by the more selective species is shown to be dependent, at least partially, on the colours of the flowers. The findings are discussed in relation to the theories of Competition and Optimal Foraging and the ‘mechanistic approach’ to ecology. The use of learning models is suggested as an alternative means of investigating patterns of resource use in future research.

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
843F1BCB0F11A6C64C844F0908798BB177F49B19
Revue

Oecologia

Année de publication
1989
Présence de XML structuré
Non
Version PDF
1.3
Score qualité du texte
9.604
Sous-corpus
  • Insectes
Type de publication
Journal
ark:/67375/1BB-KFTPBVDL-0
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