Food Preference in a Natural Population of the Douglas-Fir Tussock Moth1
Authors: MASON, RICHARD R.; BAXTER, JERROLD W.
Source: Journal of Economic Entomology, Volume 63, Number 4, August 1970 , pp. 1258-1259(2)
Publisher: Entomological Society of America
Abstract:Food selection by larvae of Hemerocampa pseudotsugata McDunnough was studied in an outbreak on white fir, Abies concolor (Gordon and Glendenning) Lindley, in northern California. Caterpillars fed more on new foliage of white fir when it was available than on old foliage. Old needles were almost totally unacceptable to early instars but were eaten by late instars. After a late spring frost killed back most of the new growth on white fir, many caterpillars shifted to and fed on new needles of ponderosa pine, Pinus ponderosa Lawson. However, when given a choice of fir or pine in the laboratory, larvae strongly favored new foliage of white fir. A shortage of preferred food stimulated mobility among early instars. When caterpillars were fed only frost-damaged foliage which contained no new growth, many died, apparently from starvation.
Document Type: Research Article
Publication date: August 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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