View/open View the PDF document

Category: Ecological Research

Title: Dwarf Mistletoe-Pandora Moth Interaction and its Contribution to Ponderosa Pine Mortality in Arizona

Author: Wagner, M.R. , Mathiasen, R.L.

Subject: Infestation, Mortality, Ponderosa pine (Pinus ponderosa)

Abstract: The interaction between Southwestern dwarf mistletoe, Arceuthobtum vaginatum subspecies cruptopodum, infestation and defoliation by the pandora moth, Coloradia pandora pandora, on the Kaibab Plateau in Arizona was evaluated. Heavy defoliation of ponderosa pine, Pinus ponderosa, in 1979 and 1981 resulted in mortality of individual trees in areas of heavy dwarf mistletoe infestation.Postmortem evaluation of ponderosa pines indicated that dead trees had a significantly higher dwarf mistletoe rating than did nearby paired live trees. Of 25 tree pairs evaluated, only two live trees had higher dwarf mistletoe ratings than the paired dead tree. Mean dwarf mistletoe ratings were: live trees 2.9, dead trees 4.6 (6 class dwarf mistletoe rating system). Implications for management of the pandora moth are discussed.

Date: 1985

Type: Journal

Source: Great Basin Naturalist

Identifier: 45(3):423-427

Publisher: Brigham Young University

Format: PDF

Language: English