| Title: | Diel Periodicity in Males of the Navel Orangeworm (Lepidoptera: Pyralidae) as Revealed by Automated Camera Traps |
| Author(s): | Burks CS; Hengst FS; Wilson H; Wenger JA; |
| Address: | "USDA, Agricultural Research Service, San Joaquin Valley Agricultural Sciences Center, 9611 South Riverbend Avenue, Parlier, CA 93648, USA. Department of Plant Science, California State University, Fresno, 2415 East San Ramon Avenue, Fresno, CA 93740, USA. Department of Entomology, University of California, Riverside, 900 University Avenue, Riverside, CA 92521, USA" |
| ISSN/ISBN: | 1536-2442 (Electronic) 1536-2442 (Linking) |
| Abstract: | "Navel orangeworm, Amyelois transitella (Walker), is a key pest of walnuts, pistachio, and almonds in California. Pheromone mating disruption using timed aerosol dispensers is an increasingly common management technique. Dispenser efficiency may be increased by timing releases with the active mating period of navel orangeworm. Past work found that the peak time of sexual activity for navel orangeworm females is 2 h before sunrise when temperatures are above 18 degrees C. Inference of male responsiveness from data collected in that study was limited by the necessity of using laboratory-reared females as a source of sex pheromone emission to attract males and the inherent limitations of human observers for nocturnal events. Here we used camera traps baited with artificial pheromone to observe male navel orangeworm mating response in the field over two field seasons. Male response to synthetic pheromone exhibited diel patterns broadly similar to females, i.e., they were active for a brief period of 2-3 h before dawn under summer conditions and began responding to pheromone earlier and over a longer period of time during spring and fall. But contrary to the previous findings with females, some males were captured at all hours of the day and night, and there was no evidence of short-term change of pheromone responsiveness in response to temperature. Environmental effects on the response of navel orangeworm males to an artificial pheromone source differ in important ways from the environmental effects on female release of sex pheromone" |
| Keywords: | Humans Male Female Animals *Sex Attractants/pharmacology *Moths/physiology Pheromones/pharmacology *Prunus dulcis Aerosols camera trap pheromone lure protandrous response remote sensing; |
| Notes: | "MedlineBurks, Charles S Hengst, Foster S Wilson, Houston Wenger, Jacob A eng 2022/10/19 J Insect Sci. 2022 Sep 1; 22(5):11. doi: 10.1093/jisesa/ieac059" |
