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Updating the National Fire-Danger Rating System (NFDRS) was completed in 1977, and operational use of it was begun the next year. The System provides a guide to wildfire control and suppression by its indexes that measure the relative potential of initiating fires. Such fires do not behave…
Author(s): Jack D. Cohen, John E. Deeming
Keywords: fire modeling, fire occurrence, fire-danger indexes, forest-fire hehavior, forest-fire risk, fuel moisture, fuel models
Source: Gen. Tech. Rep. PSW-82. Berkeley, CA: Pacific Southwest Forest and Range Experiment Station, Forest Service, U.S. Department of Agriculture; 16 p
Year: 1985
To enable the resolution of deep phylogenetic divergence in Scolytinae and closely related weevils, several new molecular markers were screened for their phylogenetic potential. The nuclear protein encoding genes, CAD and Arginine Kinase, were particularly promising and will be added to future…
Author(s): Bjarte H. Jordal
Keywords: phylogenetic divergence, Scolytinae, weevils
Source: In: Bentz, Barbara; Cognato, Anthony; Raffa, Kenneth, eds. Proceedings from the Third Workshop on Genetics of Bark Beetles and Associated Microorganisms. Proc. RMRS-P-45. Fort Collins, CO: U.S. Department of Agriculture, Forest Service, Rocky Mountain Research Station. p. 3-9
Year: 2007
Identification of insect species is often problematic because of limited morphological and/or biological characters. DNA data have been used in many phylogenetic studies to help identify and revise species boundaries (Savolainen and others 2005). For many studies, percent similarity DNA compared…
Author(s): Anthony I. Cognato
Keywords: DNA, taxonomy, phylogenetic studies, insect species
Source: In: Bentz, Barbara; Cognato, Anthony; Raffa, Kenneth, eds. Proceedings from the Third Workshop on Genetics of Bark Beetles and Associated Microorganisms. Proc. RMRS-P-45. Fort Collins, CO: U.S. Department of Agriculture, Forest Service, Rocky Mountain Research Station. p. 11-12
Year: 2007
The recent outbreak of mountain pine beetle (MPB) (Dendroctonus ponderosae) in British Columbia provided an opportunity to examine genetic variation of differential attack and resistance in a 20-year old lodgepole pine open-pollinated (OP) family trial. Approximately 2,500 individuals from 180 OP…
Author(s): Alvin Yanchuk, Kimberly Wallin
Keywords: mountain pine beetle, MPB, Dendroctonus ponderosae, British Columbia, lodgepole pine
Source: In: Bentz, Barbara; Cognato, Anthony; Raffa, Kenneth, eds. Proceedings from the Third Workshop on Genetics of Bark Beetles and Associated Microorganisms. Proc. RMRS-P-45. Fort Collins, CO: U.S. Department of Agriculture, Forest Service, Rocky Mountain Research Station. p. 23
Year: 2007
Population genetic structure studies made in genus Dendroctonus have been conducted from the perspectives of allopatric and sympatric models. In the first case, host effect and historical contingency were not recognized as a source of variation, while the later considered the host itself as a…
Author(s): Enrico A. Ruíz, Jane L. Hayes, John E. Rinehart, G. Zúñiga
Keywords: phylogeographic analysis, Douglas-fir beetle, Dendroctonus pseudotsugae
Source: In: Bentz, Barbara; Cognato, Anthony; Raffa, Kenneth, eds. Proceedings from the Third Workshop on Genetics of Bark Beetles and Associated Microorganisms. Proc. RMRS-P-45. Fort Collins, CO: U.S. Department of Agriculture, Forest Service, Rocky Mountain Research Station. p. 29-32
Year: 2007
Bark beetle colonization action is a biotic stress to the host, which responds to this action by secreting oleoresin. This mixture of several compounds can be highly toxic for the insects. We hypothesized that the first physiological reaction of the insects to these toxic compounds is to metabolize…
Author(s): M. Fernanda López, Viviana Cerrillo, Zulema Gómez, M. Shibayama, Olga-Arciniega, Gerardo Zúñiga
Keywords: bark beetle, red turpentine, Dendroctonus valens, P450s, oleoresin, alfa-pinene enantiomers
Source: In: Bentz, Barbara; Cognato, Anthony; Raffa, Kenneth, eds. Proceedings from the Third Workshop on Genetics of Bark Beetles and Associated Microorganisms. Proc. RMRS-P-45. Fort Collins, CO: U.S. Department of Agriculture, Forest Service, Rocky Mountain Research Station. p. 37-40
Year: 2007
Cytochromes P450 family genes (P450s) are found in a diverse array of organisms ranging from bacteria to mammals to plants to arthropods. Although there are exceptions to this rule, organisms generally contain a fairly large number of P450 genes and pseudogenes in their genomes. For instance, among…
Author(s): Dezene P. W. Huber, Melissa Erickson, Christian Leutenegger, Joerg Bohlmann, Steven J. Seybold
Keywords: bark beetle, cytochromes P450
Source: In: Bentz, Barbara; Cognato, Anthony; Raffa, Kenneth, eds. Proceedings from the Third Workshop on Genetics of Bark Beetles and Associated Microorganisms. Proc. RMRS-P-45. Fort Collins, CO: U.S. Department of Agriculture, Forest Service, Rocky Mountain Research Station. p. 41-42
Year: 2007
The bark beetles (Scolytinae) increase their potential to colonize their hosts by associating symbiotically with microorganisms, particularly fungi, which are carried on specialized structures called mycangium (Harrington 1993; Klepzig 2001; Paine and others 1997;Six 2003; Whitney 1982).…
Author(s): Flor N. Rivera, Zulema Gómez, Evelyn González, Nydia López, César H. Hernández Rodríguez, Gerardo Zúñiga
Keywords: bark beetles, Scolytinae, Dendroctonus erichson
Source: In: Bentz, Barbara; Cognato, Anthony; Raffa, Kenneth, eds. Proceedings from the Third Workshop on Genetics of Bark Beetles and Associated Microorganisms. Proc. RMRS-P-45. Fort Collins, CO: U.S. Department of Agriculture, Forest Service, Rocky Mountain Research Station. p. 45-48
Year: 2007
Bark beetles are known to have complex associations with a variety of microorganisms (Paine and others 1987; Ayres and others 2000; Six and Klepzig 2004). However, most of our knowledge involves fungi, particularly external species. In contrast, we know very little about their associations with…
Author(s): Archana Vasanthakumar, Yasmin Cardoza, Italo Delalibera, Patrick Schloss, Jo Handelsman, Kier Klepzig, Kenneth Raffa
Keywords: bark beetles, microorganisms, bacterial gut symbionts, gut bacteria
Source: In: Bentz, Barbara; Cognato, Anthony; Raffa, Kenneth, eds. Proceedings from the Third Workshop on Genetics of Bark Beetles and Associated Microorganisms. Proc. RMRS-P-45. Fort Collins, CO: U.S. Department of Agriculture, Forest Service, Rocky Mountain Research Station. p. 49-51
Year: 2007
These proceedings provide a synopsis of the Third Workshop on Genetics of Bark Beetles and Association Microorganisms, which was held May 20-2, 2006 in Asheville, NC. Twenty- five participants from five countries attended the meeting. The proceedings are structured into four parts: Phylogenetics of…
Author(s): Barbara Bentz, Anthony Cognato, Kenneth Raffa
Keywords: genetics, bark beetles, microorganism
Source: RMRS-P-45. Fort Collins, CO: U.S. Department of Agriculture, Forest Service, Rocky Mountain Research Station. 51 p.
Year: 2007
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