Canadian Forest Service Publications

Responsiveness of Pseudaletia unipuncta males to the female sex pheromone. 1983. Turgeon, J.J.; McNeil, J.N.; Roelofs, W.L. Physiological Entomology 8: 339-344.

Year: 1983

Issued by: Great Lakes Forestry Centre

Catalog ID: 22622

Language: English

Availability: PDF (request by e-mail)

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In wind tunnel experiments male response to different concentrations of synthetic pheromone varied with age. At 25°C responsiveness increased up to day 5 and then declined slightly on day 7. For any given age the level of response generally increased with an increase in pheromone concentration. Males held at 15°C (since emergence) showed a continual increase in responsiveness with age; however, overall response levels were less than at 25°C. At 25°C male response to low concentrations of pheromone (10 and 30 μg) varied markedly over a 24 h period but no differences were observed at higher concentrations (100 and 300 μg).