Canadian Forest Service Publications

Selection of pheromone trap and attractant dispenser load to monitor black army cutworm, Actebia fennica. 1991. Gray, T.G.; Shepherd, R.F.; Struble, D.L.; Byers, J.; Maher, T.F. Journal of Chemical Ecology 17(2): 309-316.

Year: 1991

Issued by: Pacific Forestry Centre

Catalog ID: 3073

Language: English

Availability: PDF (download)

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Abstract

Catch rates of black army cutworm moths, Actebia fennica (Lepidoptera: Noctuidae), were determined for different types of traps and different dispenser loads of sex attractant. Of the five traps tested, highest catch (~30 males/per night) was obtained with Uni-Traps, whereas Pherocon 1CP, Delta and Hara traps rapidly became saturated at ~9, 6, and 11 males/per night, respectively. Multi-Pher traps, like the Uni-Traps, have a covered vertical cone with a large collecting bucket but only catch about 1/3 of the number of moths (~9 males/per night) as the Uni-Traps. thus reducing potential saturation. Red rubber septa loaded with 500 micrograms of attractant blend gave a consistent catch for at least 60 days; 1000 and 2000 microgram loadings lasted for a minimum of 90 days. Polyvinylchloride and red rubber seta dispensers containing 100 micrograms of attractant had similar catch rates, which decreased rapidly with age. Based on these trap and lure-loading experiments, Multi-Pher traps baited with 1000 micrograms of attractant in a red rubber septum were selected for future calibration studies between catch density and population fluctuations on susceptible sites. Two years of monitoring results also are reported.