Different bioassays for investigating orientation responses of the banana weevil, Cosmopolites sordidus, show additive effects of host plant volatiles and a synthetic male-produced aggregation pheromone

W. Tinzaara, M. Dicke, A. van Huis, J.A. van Loon, C.S. Gold

Research output: Contribution to journalArticleAcademicpeer-review

19 Citations (Scopus)

Abstract

Three different bioassay methods to investigate the orientation behaviour of the banana weevil, Cosmopolites sordidus (Germar) (Coleoptera: Curculionidae), to host plant volatiles and a synthetic pheromone (cosmolure+) were compared. A locomotion compensator was used to separately record walking tracks in response to three odour sources. The data show that C. sordidus uses odour-conditioned anemotaxis in its orientation to the odour sources tested. Of the two olfactometers tested, a dual port olfactometer using a continuous airflow showed stronger discrimination by C. sordidus to the different odours compared with a double pitfall olfactometer. The results of all three bioassays indicate that C. sordidus responds in an additive way to the combination of fermentation plant volatiles and the synthetic pheromone.
Original languageEnglish
Pages (from-to)169-175
JournalEntomologia Experimentalis et Applicata
Volume106
Issue number3
DOIs
Publication statusPublished - 2003

Keywords

  • colorado-potato-beetle
  • absolute-configuration
  • field activity
  • curculionidae
  • coleoptera
  • attraction
  • identification
  • odors

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