Hostname: page-component-cd9895bd7-8ctnn Total loading time: 0 Render date: 2024-12-27T06:47:39.212Z Has data issue: false hasContentIssue false

The dispersion of brood galleries of Xyleborus fornicatus Eichh. (Coleoptera, Scolytidae) in tea plants

Published online by Cambridge University Press:  10 July 2009

P. Sivapalan
Affiliation:
Tea Research Institute of Sri Lanka, Talawakele, Sri Lanka

Abstract

The dispersion and density of brood galleries of the wood-boring ambrosia beetle, Xyleborus fornicatus Eichh., in the tea plant depends on the type of branch (primary, secondary and tertiary) and not on the total available length of branch nor on branch thickness. Within the different branch types, branch lengths and the numbers of galleries contained in them are directly related. Significantly more galleries are formed in the primary branches than in the secondaries, which themselves carry more than the tertiaries. For precise estimation of Xyleborus population density, a stratified sampling system, representing the different branch classes, will be required.

Type
Original Articles
Copyright
Copyright © Cambridge University Press 1975

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

Calnaido, D. (1965). The flight and dispersal of shot-hole borer of tea (Xyleborus fornicatus Eichh., Coleoptera: Scolytidae).—Entomologia exp. appl. 8, 249262.Google Scholar
Cranham, J. E. (1961). The chemical control of shot-hole borer (Xyleborus fornicatus Eichh.) on tea.—Tea Q. 32, 171184.Google Scholar
Cranham, J. E. (1963). Shot-hole borer: biology and control. Notes for planters, 1963.—Tea Q. 34, 127143.Google Scholar
Danthanarayana, W. (1967). Tea entomology in perspective.—Tea Q. 38, 153177.Google Scholar
Danthanarayana, W., Fernando, S. N. & Shanmugam, C. (1968). Recent developments in research on shot-hole borer control.—Tea Q. 39, 94114.Google Scholar
Fernando, E. F. W. (1960). Storage and transmission of ambrosia fungus in the adult Xyleborus fornicatus Eich. (Coleoptera: Scolytidae).—Ann. Mag. nat. Hist. (13) 2, 475480.CrossRefGoogle Scholar
Gadd, C. H. (1949). Studies of shot-hole borer of tea. V. Borer population.—Tea Q. 20, 6676.Google Scholar
Judenko, E. (1958a). Trials with a method of assessment of infestations caused by shot-hole borer (Xyleborus fornicatus Eich.) on old tea.—Tea Q. 29, 5159.Google Scholar
Judenko, E. (1958b). Preliminary small-scale field experiments on a chemical method for the prevention of shot-hole borer attack on tea in plucking.—Tea Q. 29, 115124.Google Scholar