Skip to Main Content
Forecasting outbreaks of the Douglas-fir tussock moth from lower crown cocoon samples.Author(s): Richard R. Mason; Donald W. Scott; H. Gene. Paul
Source: Res. Pap. PNW-RP-460. Portland, OR: U.S. Department of Agriculture, Forest Service, Pacific Northwest Research Station. 12 p
Publication Series: Research Paper (RP)
Station: Pacific Northwest Research Station
View PDF (740 KB)
DescriptionA predictive technique using a simple linear regression was developed to forecast the midcrown density of small tussock moth larvae from estimates of cocoon density in the previous generation. The regression estimator was derived from field samples of cocoons and larvae taken from a wide range of nonoutbreak tussock moth populations. The accuracy of the predictions was demonstrated on an operational basis in an independent tussock moth outbreak.
- You may send email to email@example.com to request a hard copy of this publication.
- (Please specify exactly which publication you are requesting and your mailing address.)
CitationMason, Richard R.; Scott, Donald W.; Paul, H. Gene. 1993. Forecasting outbreaks of the Douglas-fir tussock moth from lower crown cocoon samples. Res. Pap. PNW-RP-460. Portland, OR: U.S. Department of Agriculture, Forest Service, Pacific Northwest Research Station. 12 p
KeywordsPredicting insect populations, insect outbreaks, sampling insects, Douglas-fir tussock moth, Orgyia pseudotsugata
- Monitoring larval populations of the Douglas-fir tussock moth and the western spruce budworm on permanent plots: sampling methods and statistical properties of data
- Recurrent outbreak of the Douglas-fir tussock moth in the Malheur National Forest: a case history.
- Lethal effects of five molt inhibitors fed to the western spruce budworm (Choristoneura occidentalis Freeman) (Lepidoptera: Tortricidae) and the Douglas-fir tussock moth (Orgyia pseudotsugata [McDonnough]) (Lepidoptera: Lymantriidae)
XML: View XML