Microenvironmental Measurements for the Dioryctria amatella-zimmermani Complex1 in Shortleaf Pine. 1. Insect Introduction, Temperature, Humidity, and Vapor Pressure Deficit2,3
Authors: COULSON, ROBERT N.; FRANKLIN, RUDOLPH T.
Source: Journal of Economic Entomology, Volume 63, Number 2, April 1970 , pp. 558-564(7)
Publisher: Entomological Society of America
Abstract:The microenvironment of 2nd-year cones of shortleaf pine, Pinus echinata Mill., damaged by Dioryctria spp. (Lepidoptera: Phycitidae) was investigated. The influences of temperature, humidity, and vapor pressure deficit as mediated by the insect habitat were considered.
The microenvironment of the cone habitat changes progressively from the onset of attack by the insect. The most extreme environmental conditions for developing Dioryctria larvae were in brown cones where the highest temperature and evaporation stress was observed. Environmental conditions in the tree crown gave little indication of the microenvironment in which the insect was actually living.
Each Dioryctria larva was found to be capable of de- stroying more than 1 shortleaf pine 2nd-year cone. The spider predator Mimetus puritans and several insect parasites substantially reduce the number of Dioryctria larvae within shon1eaf pine.
Document Type: Research Article
Publication date: April 1, 1970
- Journal of Economic Entomology is published bimonthly in February, April, June, August, October, and December. The journal publishes articles on the economic significance of insects and is divided into the following sections: apiculture & social insects; arthropods in relation to plant disease; forum; insecticide resistance and resistance management; ecotoxicology; biological and microbial control; ecology and behavior; sampling and biostatistics; household and structural insects; medical entomology; molecular entomology; veterinary entomology; forest entomology; horticultural entomology; field and forage crops, and small grains; stored-product; commodity treatment and quarantine entomology; and plant resistance. In addition to research papers, Journal of Economic Entomology publishes Letters to the Editor, interpretive articles in a Forum section, Short Communications, Rapid Communications, and Book Reviews.
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