Behavioural effects of minor sex pheromone components in Brazilian apple leafroller Bonagota cranaodes (Lep., Tortricidae)

• Published in: Journal of applied entomology (1986) 2003-08, Vol.127 (7), p.427-434
• Main Authors: Coracini, M.D.A, Bengtsson, M, Reckziegel, A, Eiras, A.E, Vilela, E.F, Anderson, P, Francke, W, Lofqvist, J, Witzgall, P
• Format: Article
• Language: English
• Subjects: antennae; antennal response; Biological and medical sciences; electroantennography; electrophysiology; Fundamental and applied biological sciences. Psychology; insect behavior; insect flight; insect pests; leafrollers; pheromone blends; pheromone glands; Phytopathology. Animal pests. Plant and forest protection; Protozoa. Invertebrates; redundancy; sex attractants; sex pheromone blend; sex pheromones; synergism; synthesis; synthetic sex pheromones; Tortricidae; upwind flight behaviour; wind tunnels
• ISSN: 0931-2048; 1439-0418
• DOI: 10.1046/j.1439-0418.2003.00758.x

:  The behavioural response of Brazilian apple leafroller males, Bonagota cranaodes (Meyrick), to natural and synthetic sex pheromone was studied in a wind tunnel. Calling females elicited upwind flights followed by landing and wingfanning at the source in 72% of the males tested. Female gland extracts, with the main compound (E, Z)3,5dodecadienyl acetate released at 100 pg/min, attracted 57% of the males to the source. Few males (1%) were attracted to the main compound alone, released at the same rate. Even a synthetic blend of all five gland compounds eliciting an antennal response, formulated according to their proportion in female gland extracts, was barely attractive (7%). Comparison of this synthetic blend and female gland extracts indicates a behavioural role of other gland compounds. Male attraction was significantly increased (34%) in response to a 100 : 5 : 5 : 5‐blend of the main compound and three minor gland compounds, (Z)‐5‐dodecenyl acetate, (E, Z)‐3,5‐tetradecadienyl acetate, and (Z)‐9‐hexadecenyl acetate.