Back to Search
Start Over
Blue-stain fungi and their transport structures on the Douglas-fir beetle
- Source :
- The Bark Beetles, Fuels, and Fire Bibliography
- Publication Year :
- 1994
- Publisher :
- Canadian Science Publishing, 1994.
-
Abstract
- Parent and preflight-adult Douglas-fir beetles (Dendroctonuspseudotsugae Hopk., Coleoptera: Scolytidae) were collected from felled Douglas-fir (Pseudotsugamenziesii (Mirb.) Franco) trees. Fungi isolated from the beetles included blue-stain fungi, such as Ophiostomapseudotsugae (Rumbold) von Arx, Leptographiumterebrantis Barras & Perry, and Leptographiumabietinum (Peck) Wingfield; other ascomycetes, such as Graphium spp. and Leptographium spp.; yeasts; and unidentified basidiomycetes. All fungal cultures derived from parent beetles, preflight adults, beetle eggs, larvae, frass, and bark from galleries had yeasts present. Ophiostomapseudotsugae was isolated from 67% of the parent females, 19% of the parent males, and 100% of the preflight adults of both sexes collected from their pupal cells. Rinsing the beetles with 70% ethanol prior to fungus isolations reduced the frequency of all fungi, except yeasts. Parent and preflight adult beetles (of both sexes) were examined with a scanning electron microscope, where spores of O. pseudotsugae were visible in shallow pits on the elytra of both male and female beetles. Spores of other fungi were observed in shallow pits on elytra and in much smaller but deeper pits on the scutellum of both sexes. The results indicate a close association between Douglas-fir beetles and fungi, accompanied by anatomical differentiation on the beetles that allows the dissemination of blue-stain fungi to new Douglas-fir hosts and substrates.
- Subjects :
- Global and Planetary Change
Wood Science and Pulp, Paper Technology
Ecology
Graphium
Dendroctonus pseudotsugae
Ecology and Evolutionary Biology
fungi
Forestry
Biology
biology.organism_classification
Forest Management
Spore
visual_art
Mycology
Botany
Blue stain
visual_art.visual_art_medium
Bark
Forest Biology
Entomology
Forest Sciences
Elytron
Douglas fir
Subjects
Details
- ISSN :
- 12086037 and 00455067
- Volume :
- 24
- Database :
- OpenAIRE
- Journal :
- Canadian Journal of Forest Research
- Accession number :
- edsair.doi.dedup.....5814f766ded82ea3e4d73c83677b3873