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Document
Type: Report
Publication Date: 1971
Laboratory feeding tests indicate that hemlock sawfly populations are partially regulated by food quality. Semi-starvation of late-instar larvae, due to feeding on current year's foliage rather than on a normal diet of previous year's foliage, caused a 65% reduction in survival of females versus 10% in males and a 26% reduction in fecundity of surviving females.
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Citation: Hard, John S. 1971. Effects of semi-starvation during late larval stages on survival and fecundity of the hemlock sawfly in the laboratory. Research Note PNW-RN-157. USDA Forest Research, Pacific Northwest Forest and Range Experiment Station. 8 p.
Cataloging Information
Topics:
Regions:
Keywords:
- entomology
- hemlock sawfly
- insect population
- larvae development
- Neodiprion tsugae
- survivorship
- Tsuga heterophylla
- western hemlock
Record Last Modified:
Record Maintained By: FRAMES Staff (https://www.frames.gov/contact)
FRAMES Record Number: 5786