1. Behavioral responses of female Mexican fruit flies,Anastrepha ludens, to components of male-produced sex pheromone

   • D. C. Robacker

   OriginalPaper Pages: 1715 - 1726

2. Hagen's gland morphology and chemical content analysis for three species of parasitic wasps (Hymenoptera: Braconidae)

   • Howard J. Williams
   • Marianne Wong
   • S. Bradleigh Vinson

   OriginalPaper Pages: 1727 - 1736

3. Individual variation in aggregation pheromone content of the bark beetle,Ips typographus

   • Göran Birgersson
   • Fredrik Schlyter
   • Jan Löfqvist

   OriginalPaper Pages: 1737 - 1761

4. Rumex obtusifolius L: Release of allelochemical agents and their influence on small-scale spatial distribution of meadow species

   • E. Carral
   • M. J. Reigosa
   • A. Carballeira

   OriginalPaper Pages: 1763 - 1773

5. Asymmetric small-scale distribution and allelopathy: Interaction betweenRumex obtusifolius L. and meadow species

   • A. Carballeira
   • E. Carral
   • M. J. Reigosa

   OriginalPaper Pages: 1775 - 1786