EGG - GALLERY LENGTH RELATIONSHIP AND WITHIN-TREE ANALYSES FOR SOUTHERN PINE BEETLE, DENDROCTONUS-FRONTALIS (COLEOPTERA-SCOLYTIDAE) Academic Article

abstract

• AbstractThe within-sample distributions of gallery length (GL) and egg (E) density as well as their functional relationships to the infested bole were studied in an epidemic population of the southern pine beetle in southeast Texas.A least-squares linear regression analysis through the origin showed an average of 1.59 eggs per centimeter of gallery. GL accounted for 81% of the variation in E and thus is useful for estimating egg numbers. The density of attacking adults is unsatisfactory for predicting E.GL and E are uniformly distributed within but not among the 100-cm2 sample disks at a given height. The functional relationship of both variables to the infested bole is adequately described by the model y = (A+Bx)exp(Cln(xx2)), where y = GL or E per 100 cm2, x = the normalized height on the infested bole, and A, B, and C are parameters to be estimated for each set of data.

authors

• Coulson, Robert

published proceedings

• CANADIAN ENTOMOLOGIST

author list (cited authors)

• FOLTZ, J. L., MAYYASI, A. M., HAIN, F. P., COULSON, R. N., & MARTIN, W. C.

citation count

• 23

complete list of authors

• FOLTZ, JL||MAYYASI, AM||HAIN, FP||COULSON, RN||MARTIN, WC

publication date

• April 1976

publisher

• Cambridge University Press (CUP)  Publisher

published in

• Canadian Entomologist  Journal

keywords

• 31 Biological Sciences
• 3109 Zoology

Digital Object Identifier (DOI)

• 10.4039/Ent108341-4

start page

• 341

end page

• 352

volume

• 108

issue

• 4

URL

• http://dx.doi.org/10.4039/ent108341-4