Abstract
Solar UV light entering Lodgepole pine,Pinus contorta (Loud.) canopy was measured by radiometer and polysulphone film. It was found to be much attenuated among lower branches and nuclear polyhedrosis virus exposed there was significantly more infective to Pine beauty moth,Panolis flammea (D.+S.) than virus from upper branches.
Résumé
Les ultraviolets solaires atteignant la cime des Pins (Pinus contorta Loud.) ont été mesurés en utilisant la technique du radiomètre et du film de polysulphone. Il a été observé que la quantité d'ultraviolet était plus faible au niveau des branches basses, et que les virus de la polyhédrose nucléaire présents à cet endroit étaient significativement plus infectieux pour les papillons (Panolis flammea, D+S) que les virus présents sur les branches hautes.
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S. J. Warden died April 1989
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Killick, H.J., Warden, S.J. Ultraviolet penetration of pine trees and insect virus survival. Entomophaga 36, 87–94 (1991). https://doi.org/10.1007/BF02374639
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DOI: https://doi.org/10.1007/BF02374639