We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Scramble competition in the southern pine beetle, Dendroctonus frontalis.
- Authors
Reeve, John D.; Rhodes, Douglas J.; Turchin, Peter
- Abstract
1. The nature of intraspecific competition was investigated in the southern pine beetle, Dendroctonus frontalis, a highly destructive pest of pine forests in the southern U.S.A. Data were analysed from an observational study of naturally-attacked trees, and from field experiments where attack density was manipulated by adding different numbers of beetles to caged trees. 2. The effect of attack density on gallery construction, oviposition, brood survival, and the overall rate of increase was examined, and a flexible model of intraspecific competition used to classify the type of competition (contest or scramble) at different points in the life cycle. 3. The results of these analyses suggest that contest competition occurs during gallery construction and oviposition, in accord with previous work on D. frontalis. Strong scramble competition occurs later on in development, however, and the overall competitive process is better characterized as scramble competition, similar to other bark beetles. Trees with attack densities sufficiently high to produce significant competition are common in the field.
- Subjects
SOUTHERN States; COMPETITION (Biology); SOUTHERN pine beetle; PINE tree diseases &; pests
- Publication
Ecological Entomology, 1998, Vol 23, Issue 4, p433
- ISSN
0307-6946
- Publication type
Article
- DOI
10.1046/j.1365-2311.1998.00143.x