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Corpus Systématique Végétale

Titre du document

Interspecific and temporal variation in herbivore responses to hybrid willows

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Springer (journals)
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Mots-clés d'auteur
  • Hybrid
  • Herbivores
  • RAPD
  • Salix
  • Year-to-year variation
Nom du fichier dans la ressource
  • Robert S. Fritz 1
  • Bernadette M. Roche 1
  • Steven J. Brunsfeld 2
  • Colin M. Orians 3
  • 1) Department of Biology, Vassar College, 12601, Poughkeepsie, NY, USA
  • 2) department of Forest Resources, University of Idaho, 83843, Moscow, ID, USA
  • 3) Department of Biology, Tufts University, 02155, Medford, MA, USA

We studied herbivory of two species of willows (Salix sericea and S. eriocephala) and their interspecific hybrids to test alternative hypotheses concerning the effects of hybridization on plant resistance. Individually marked plants were identified using morphological traits in the field and random amplified polymorphic DNA (RAPD) band analysis was used to verify the genetic status of many parental and hybrid plants. The desities of 12 herbivore species on plants in the field were compared between two parents and their F2-type hybrids. We found about equal support for the additive, dominance, and hybrid susceptibility hypotheses over 4 years. In one year, one species supported the hybrid resistance hypothesis. Guild membership was not a good predictor of similar responses of species to hybrid versus parental plants. There were marked differences in support for particular hypotheses among years for four herbivore species. This study demonstrates the diversity of responses of phytophages in response to interspecific hybridization, and indicates that year-to-year variation in relative resistance of hybrid plants can be important.

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
  • 4 - psychologie. psychophysiologie
Catégories Scopus
  • 1 - Life Sciences ; 2 - Agricultural and Biological Sciences ; 3 - Ecology, Evolution, Behavior and Systematics
Catégories WoS
  • 1 - science ; 2 - ecology
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