Environmental Entomology (1981) 10, 335-342

John F. Doane (1981)
Evaluation of a larval trap and baits for monitoring the seasonal activity of wireworms in Saskatchewan
Environmental Entomology 10 (3), 335-342
Abstract: A larval trap and several types of bait were compared for their efficiency in capturing or collecting Ctenicera destructor (Brown) and Hypolithus bicolor Eschscholtz larvae throughout two seasons. Traps under soil covered with a 1-m² sheet of black polyethylene, traps under bare soil (no cover), and oatmeal baits were the three best methods of collection. Competition from an abundant food supply in the soil around traps greatly reduced the trap catch. Few H. bicolor larvae were captured in traps. This species was attracted to oatmeal baits and was mainly found in soil cores taken around these baits.
Seasonal fluctuations in numbers of C. destructor larvae captured by traps, or collected in baits, indicated that there were three peaks of activity in 1978; the first and most prominent was in June, the second was in August, and the third was in early September. In 1979, the second year plots were summerfallowed, there were two peaks of activity, the first in June and the second in August. After the first peak of response in June, captures of large and medium sized larvae declined steeply, whereas small sized larvae were captured until the end of the season. In 1978, peak activity of H. bicolor also occurred in June, followed by a second smaller peak in August. In 1979, after an initial peak in June, a marked decline in captures similar to that of C. destructor was observed.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)

Research topic(s) for pests/diseases/weeds:
pheromones/attractants/traps
population dynamics/ epidemiology

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Ctenicera destructor	Wheat (Triticum)	Canada (west)
	Hypolithus bicolor	Wheat (Triticum)	Canada (west)