Abstract

AbstractThe 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.

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