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THREE METHODS OF SAMPLING MITES PHORETIC ON BARK BEETLES: A COMPARISON1

Published online by Cambridge University Press:  31 May 2012

D.N. Kinn
D.N. Kinn
Affiliation:
Southern Forest Experiment Stations, Pineville, Louisiana 71360
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Abstract

When a few large trees are to be sampled, emergence traps provide more reliable counts of mites that are phoretic on southern pine beetles than either removal of bolts or removal of 100 cm2 bark discs. When a large sample from smaller trees is required, removal of bolts is preferable to removal of disc samples. Emergence traps or bolt samples are preferable to disc samples because: (1) fewer mites are lost during transportation and rearing; (2) mites are not left on the xylem; (3) fewer die from desiccation during rearing; and (4) fewer non-phoretic stages accumulate in the collecting medium.

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Type
Articles
Information
The Canadian Entomologist , Volume 111 , Issue 4 , April 1979, pp. 491 - 494
Copyright
Copyright © Entomological Society of Canada 1979

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References

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