Hostname: page-component-78c5997874-xbtfd Total loading time: 0 Render date: 2024-11-04T18:17:30.115Z Has data issue: false hasContentIssue false
  • English
  • Français

Impact of Pine Leaf Aphid, Pineus pinifoliae (Chermidae) on its Secondary Host, Eastern White Pine1

Published online by Cambridge University Press:  31 May 2012

Robert F. DeBoo ,
John B. Dimond  and
James H. Lowe Jr.
Get access Rights & Permissions [Opens in a new window]

Abstract

Pine leaf aphid infestation produces not only a general reduction in radial growth of white pine but also a modification of the normal pattern of annual radial increment along the length of the stem. The greatest growth reduction occurs in the lower stem with proportionately less in the midcrown area and least in the top. This appears to reflect the distribution of branch mortality which is greatest in the mid- and lower crown. Several defoliators studied by other workers produce the greatest effect on radial growth and on foliage survival in the tops of the tree.

Stem elongation reduction occurs only after crown damage and aphid infestation becomes extreme. Lighter infestations are reflected, however, in reduced needle length in the year of attack followed by reduced branch elongation in the year following attack. The combination of stunted and normal needles alternating with stunted and normal branch internodes is probably a unique characteristic of pine leaf aphid damage.

Type
Articles
Information
The Canadian Entomologist , Volume 96 , Issue 5 , May 1964 , pp. 765 - 772
Copyright
Copyright © Entomological Society of Canada 1964

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

Balch, R. E., and Underwood, G. R.. 1950. The life history of Pineus pinifoliae (Fitch) (Homoptera: Phylloxeridae) and its effect on white pine. Canad. Ent. 82: 117–123.CrossRefGoogle Scholar
Church, T. W. Jr., 1949. Effects of defoliation on growth of certain conifers. Northeast For. Exp. Sta., Sta. Pap. 22, 12 pp.Google Scholar
Duff, G. H., and Nolan, N. J.. 1953. Growth and morphogenesis in the Canadian forest species. I. The control of cambial and apical activity of Pinus resinosa Ait. Canad. J. Bot. 31: 471–513.CrossRefGoogle Scholar
Farrar, J. L. 1961. Longitudinal variation in the thickness of the annual ring. For. Chron. 37: 323–330, 349.CrossRefGoogle Scholar
Glock, W. S. 1955. Tree growth. II. Growth rings and climate. Bot. Rev. 21: 73–188.CrossRefGoogle Scholar
Graham, K. 1963. Concepts of forest entomology. Reinhold Publishing Corp., New York.Google Scholar
Kramer, P. J., and Kozlowski, T. T.. 1960. Physiology of trees. McGraw-Hill Book Co., New York.Google Scholar
Labyak, L. F., and Schumacher, F. X.. 1954. The contribution of its branches to the mainstem growth of loblolly pine. J. For. 52: 333–337.Google Scholar
Mott, D. G., Nairn, L. D. and Cook, J. A.. 1957. Radial growth in forest trees and effects of insect defoliation. For. Sci. 3: 286–304.Google Scholar
Onaka, F. 1950. The longitudinal distribution of radial increment in trees. Kyoto Univ. For. Bull. 18: 1–53.Google Scholar
Reeks, W. A., and Barter, G. W.. 1951. Growth reduction and mortality of spruce caused by the European spruce sawfly, Gilpinia hercyniae (Htg.) (Hymenoptera: Diprionidae). For. Chron. 27: 1–16.CrossRefGoogle Scholar
Studhalter, R. A. 1955. Tree growth. I. Some historical chapters. Bot. Rev. 21: 1–72.Google Scholar
Young, H. E., and Kramer, P. J.. 1952. The effect of pruning on the height and diameter growth of loblolly pine. J. For. 50: 474–479.Google Scholar