Nom du corpus

Corpus Systématique Animale

Titre du document

The influence of plant architecture on the foraging efficiencies of a suite of ladybird beetles feeding on aphids

Lien vers le document
Éditeur
Springer (journals)
Langue(s) du document
Anglais
Type de document
Research-article
Mots-clés d'auteur
  • Coccinellidae
  • Crucifers
  • Foraging behavior
  • Plant architecture
  • Predation efficiency
Nom du fichier dans la ressource
Insectes_v2b_00069
Auteur(s)
  • Fritzi S. Grevstad 1
  • Bradley W. Klepetka 2
Affiliation(s)
  • 1) Section of Ecology and Systematics, Cornell University, 14853, Ithaca, NY, USA
  • 2) Department of Entomology, North Carolina State University, 27695, Raleigh, NC, USA
Résumé

By manipulating plant variety and predator species, we investigated the interactions of plant and predator traits in determining predation effectiveness. The predators were all coccinellid adults (Hippodamia convergens, Hippodamia variegata, Coccinella apunctata, and Coccinella septempunctata) and the prey were cabbage aphids (Brevicoryne brassicae). Foraging behavior of the four predators was observed on four crucifers that differed widely in their structures and surface textures (Brassica oleracea caulorapa, Brassica campestris, Brassica juncea crispifolia, and Hirschfeldia incana). Predation rates were significantly influenced by plant variety, a result we attribute to direct effects of plant morphology on predator mobility, falling frequency, and prey accessibility. Predation rates did not vary significantly among the ladybirds, although the four species did exhibit distinct foraging strategies as measured by time spent actively foraging, the rate of encountering aphids, and the fraction of aphids encountered that were consumed. The coccinellids also differed in their propensity for flying away from the plant, and in the frequency with which they fell from the plant. We did not detect any significant interaction effects between plant and predator species, suggesting that the main effects of plant and predator species may overwhelm their interactions in this kind of system. Our results suggest that the level of predation upon herbivorous insects may depend more upon plant architecture than on the particular species of natural enemies present.

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
BC7B750AAABBB333E349194705E54F9F1E720407
Revue

Oecologia

Année de publication
1992
Présence de XML structuré
Non
Version PDF
1.3
Score qualité du texte
7.87
Sous-corpus
  • Insectes
Type de publication
Journal
ark:/67375/1BB-4N9CMFBG-8
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