Identification and field evaluation of (E)‐11, 13‐tetradecadienal as sex pheromone of the strawberry tortrix (Acleris comariana). (19th February 2019)

• Record Type: Journal Article
• Authors: Svensson, Glenn P.; Tönnberg, Victoria; Sigsgaard, Lene
• Is Part Of: Journal of applied entomology. Volume 143:Number 5(2019)
• Page Start: 535
• Page End: 541
• Publication Date: 2019-02-19
• Subjects: electrophysiology -- field trapping -- gland extract analysis -- pest management -- strawberry pest; Entomology -- Periodicals; Insect pests -- Periodicals; 595.7
• DOI: 10.1111/jen.12619
• Languages: English
• ISSNs: 0931-2048

Abstract

Abstract: The strawberry tortrix ( Acleris comariana Lienig and Zeller) (Lepidoptera: Tortricidae), is a major pest of strawberry in Denmark and southern Sweden. Chemical and electrophysiological analyses revealed a single compound, ( E )‐11, 13‐tetradecadienal ( E 11, 13‐14:Ald), in gland extracts of females eliciting a strong antennal response in conspecific males. Also ( Z )‐11, 13‐tetradecadienal ( Z 11, 13‐14:Ald) was found to be antennally active, but not detected in gland extracts. The corresponding alcohol and acetate of E 11, 13‐14:Ald, which are biologically active in other Acleris species, were not produced by females and did not trigger electrophysiological response in males. Trapping experiments at a commercial strawberry farm in southern Sweden showed that E 11, 13‐14:Ald and Z 11, 13‐14:Ald, alone or in combination, attracted large numbers of males. Trap catches increased with increasing dose of E 11, 13‐14:Ald, with traps baited with 100 µg and 1, 000 µg being most attractive. Our results confirm the widespread use of E 11, 13‐14:Ald as a key sex pheromone component in the genus Acleris . The identification of a highly attractive sex pheromone is a first step in developing pheromone‐based methods for monitoring and control of A. comariana in European strawberry production.