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ESTIMATION OF HEMLOCK SAWFLY (HYMENOPTERA: DIPRIONIDAE) FECUNDITY

Published online by Cambridge University Press:  31 May 2012

John S. Hard
John S. Hard
Affiliation:
Forestry Sciences Laboratory, Pacific Northwest Forest and Range Experiment Station, Forest Service, U.S. Department of Agriculture, Juneau, Alaska
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Abstract

Mean fecundity of hemlock sawfly females emerging from cocoons collected on heavily defoliated western hemlock trees was significantly less than fecundity of females collected from lightly defoliated trees. Fecundity was highly correlated with female cocoon diameter and female forewing length, but was most highly correlated with both variables combined. Time-saving double sampling techniques are discussed for determining mean fecundities of new samples when mean cocoon diameter and forewing length are known.

Type
Articles
Information
The Canadian Entomologist , Volume 108 , Issue 9 , September 1976 , pp. 961 - 966
Copyright
Copyright © Entomological Society of Canada 1976

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References

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