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Effectiveness of pheromone mating disruption for the ponderosa pine tip moth, Rhyacionia zozana (Kearfott) (Lepidoptera: Tortricidae), and its influence on the associated parasite complex

Creator:

Niwa, Christine Gail

Abstract:

The importance of pheromones in insect control relies both on their ability to reduce pest populations and on their relatively benign effects on nontarget organisms. This study was conducted to test the effectiveness of a pheromone application for mating disruption of the ponderosa pine tip moth, Rhyacionia zozana (Kearfott), and...

Resource Type:

Dissertation

Full Text:

Schowalter, and the members of my committee, Rene Feyereisen, Dave Perry, and David Birkes, for their
The importance of maintenance respiration by living cells in the sapwood of subalpine conifers

Creator:

Ryan, Michael G.

Abstract:

Xylem conducting tissue or sapwood is an important storage organ for water, carbohydrates, and nutrients, and this storage helps trees accommodate environmental change. However, the living ray parenchyma cells in sapwood, which store the carbohydrates and nutrients, require energy for maintenance. I examined how sapwood maintenance costs vary among species,...

Resource Type:

Dissertation