Present address: Natural Resources Canada, Canadian Forest Service, 506 W. Burnside Road, Victoria, British Columbia V8Z 1M5, Canada.
Facilitation in bark beetles: endemic mountain pine beetle gets a helping hand
Article first published online: 24 SEP 2010
© 2010 The Authors. Agricultural and Forest Entomology © 2010 The Royal Entomological Society
Agricultural and Forest Entomology
Volume 13, Issue 1, pages 37–43, February 2011
How to Cite
Smith, G. D., Carroll, A. L. and Lindgren, B. S. (2011), Facilitation in bark beetles: endemic mountain pine beetle gets a helping hand. Agricultural and Forest Entomology, 13: 37–43. doi: 10.1111/j.1461-9563.2010.00499.x
- Issue published online: 10 JAN 2011
- Article first published online: 24 SEP 2010
- Accepted 19 May 2010First published online 24 September 2010
- Dendroctonus ponderosae;
- interspecific competition;
- population dynamics;
- Pseudips mexicanus;
- 1Endemic populations of the bark beetle Dendroctonus ponderosae attack weakened lodgepole pine (Pinus contorta var. latifolia) trees that are often previously infested by other bark beetle species, such as Pseudips mexicanus.
- 2The effect of interactions on D. ponderosae was assessed by examining host selection and productivity of D. ponderosae in trees containing P. mexicanus and trees infested solely by D. ponderosae.
- 3The findings obtained show that D. ponderosae attacked hosts previously occupied by P. mexicanus at greater densities, and offspring emerged earlier compared with hosts infested by D. ponderosae alone. Additionally, D. ponderosae larvae in P. mexicanus-infested trees were found to require a significantly lower amount of resource to complete development with no loss in size.
- 4The presence of P. mexicanus may affect host condition, improving the subcortical environment for endemic D. ponderosae, ultimately aiding in population maintenance at low levels. Hosts in this state should be preferentially attacked by D. ponderosae.