Skip to Main Content
Day-to-day survival of late-instar western spruce budworm larvae and pupae.Author(s): Robert W. Campbell; Nilima. Srivastava
Source: Res. Note PNW-RN-408. Portland, OR: U.S. Department of Agriculture, Forest Service, Pacific Northwest Research Station. 5 p
Publication Series: Research Note (RN)
Station: Pacific Northwest Research Station
View PDF (250 KB)
DescriptionFor the western spruce budworm populations studied, day-to-day survival rates were close to constant in the interval from instar IV to residual pupae. In any given crown stratum, host-tree species, and site, day-to-day changes across this interval could be approximated very closely by the Malthusian equation Nt = N0eαt.
- You may send email to firstname.lastname@example.org to request a hard copy of this publication.
- (Please specify exactly which publication you are requesting and your mailing address.)
CitationCampbell, Robert W.; Srivastava, Nilima. 1984. Day-to-day survival of late-instar western spruce budworm larvae and pupae. Res. Note PNW-RN-408. Portland, OR: U.S. Department of Agriculture, Forest Service, Pacific Northwest Forest and Range Experiment Station. 5 p
Keywordsinsect populations, western spruce budworm, Choristoneura occidentalis
- A 31-day battery-operated recording weather station.
- Day users in wilderness: How different are they?
- Comparison of a degree-day computer and a recording thermograph in a forest environment.
XML: View XML