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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
Author(s) -
Tinzaara William,
Dicke Marcel,
Van Huis Arnold,
Van Loon Joop J. A.,
Gold Clifford S.
Publication year - 2003
Publication title -
entomologia experimentalis et applicata
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.765
H-Index - 83
eISSN - 1570-7458
pISSN - 0013-8703
DOI - 10.1046/j.1570-7458.2003.00025.x
Subject(s) - olfactometer , biology , curculionidae , bioassay , pheromone , weevil , attraction , botany , host (biology) , kairomone , sex pheromone , pest analysis , ecology , linguistics , philosophy
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.