RESUMO
A sex pheromone produced by male cabbage looper moths, Trichoplusia ni (Hübner), has been isolated from the genital scent brushes and identified as 2-phenylethanol. It is shown conclusively to elicit specific behavioural responses in the female (such as wing vibration and abdominal elevation), as determined by a novel behavioural laboratory bioassay. This is taken as further evidence that the male pheromone of T. ni acts as a sexual stimulant (aphrodisiac) prior to mating. 2-Phenylethanol represents the first identification of a genital scent brush pheromone in the family Noctuidae, and of a male pheromone in the subfamily Plusiinae.
Assuntos
Lepidópteros/fisiologia , Mariposas/fisiologia , Feromônios/fisiologia , Atrativos Sexuais/fisiologia , Potenciais de Ação , Animais , Comportamento Animal/fisiologia , Feminino , Masculino , Mariposas/anatomia & histologia , Álcool Feniletílico/farmacologia , Células Receptoras Sensoriais/fisiologiaAssuntos
Insetos/análise , Feromônios/análise , Animais , Bioensaio , Fenômenos Químicos , Química , Cromatografia , Feminino , Masculino , Feromônios/farmacologiaRESUMO
The action spectrum for breaking diapause in the oak silkworm, Antheraea pernyi Guer., and the codling moth, Laspeyresia pomonella (L.), was determined from 400 to 700 nm with a wedge-interference spectrograph. Insects were exposed to ten hours of white light, followed by six hours of spectral light each day for 45 days. The portion of the spectrum between 400 and 500 nm was found to be the most effective in terminating diapause. Diapause was broken for both insects with energy levels as low as 0.02 muw/cm(2).
