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INDIRECT ESTIMATION OF SOUTHERN PINE BEETLE (COLEOPTERA: SCOLYTIDAE) GALLERY LENGTH UTILIZING HOST CHARACTERISTICS12

Published online by Cambridge University Press:  31 May 2012

T. E. Nebeker ,
O. P. Hackney  and
R. R. Hocking
T. E. Nebeker
Affiliation:
Department of Entomology, Mississippi Agricultural and Forestry Experiment Station, Mississippi State University, Mississippi State, MS 39762
O. P. Hackney
Affiliation:
Department of Statistics and Computer Science, University of Georgia, Athens, GA 30602
R. R. Hocking
Affiliation:
Department of Statistics, Texas A&M University, College Station, TX 77843
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Abstract

A technique is presented that requires no direct measurement of gallery length to estimate the total gallery length. Required to obtain the estimate are: (1) an appropriate model for time of year, sample period, and host, (2) tree diameter at breast height, (3) length of infested bole, (4) total tree height, and (5) inner bark thickness. The technique is accurate, less time consuming, and less expensive than direct estimation techniques.

Résumé

Une méthode d’estimation de la longueur totale des galeries est décrite, laquelle n’exige pas de mesure directe de la longueur de ces galeries. Les éléments nécessaires à l’estimation sont : (1) un modèle approprié pour le temps de l’année, la période d’échantillonnage, et l’essence hôte, (2) le diamètre de l’arbre à hauteur de poitrine, (3) la longueur du tronc infesté, (4) la hauteur totale de l’arbre, et (5) l’épaisseur de l’écorce interne. La méthode est précise, et elle est moins coûteuse et plus rapide que les méthodes d’estimation directe.

Type
Articles
Information
The Canadian Entomologist , Volume 113 , Issue 3 , March 1981 , pp. 199 - 203
Copyright
Copyright © Entomological Society of Canada 1981

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References

Nebeker, T. E., Hackney, O. P., Hocking, R. R., Paz, M., and Lashomb, J. H.. 1978 a. Methods for and comparison of sampling schemes for estimating within tree southern pine beetle populations. Can. Ent. 110: 1015–1022.CrossRefGoogle Scholar
Nebeker, T. E., Hocking, R. R., Hackney, O. P., and Lashomb, J. H.. 1978 b. A comparison of nonlinear and linear models for describing gallery length distribution of Dendroctonus frontalis attacking shortleaf pine. Environ. Ent. 7: 636–640.CrossRefGoogle Scholar
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