Rapid identification and detection of pine pathogenic fungi associated with mountain pine beetles by padlock probes

2010 ◽  
Vol 83 (1) ◽  
pp. 26-33 ◽  
Author(s):  
Clement K.M. Tsui ◽  
Bin Wang ◽  
Lily Khadempour ◽  
Sepideh Massoumi Alamouti ◽  
Jörg Bohlmann ◽  
...  
Keyword(s):  
Pathogenic Fungi ◽  
Rapid Identification ◽  
Mountain Pine Beetles ◽  
Padlock Probes ◽  
Mountain Pine ◽  
Pine Beetles

Mathematical Elements of Attack Risk Analysis for Mountain Pine Beetles

2000 ◽  
Vol 204 (4) ◽  
pp. 601-620 ◽  
Author(s):  
JAMES POWELL ◽  
BRUCE KENNEDY ◽  
PETER WHITE ◽  
BARBARA BENTZ ◽  
JESSE LOGAN ◽  
...  
Keyword(s):  
Risk Analysis ◽  
Mountain Pine Beetles ◽  
Mountain Pine ◽  
Pine Beetles

THE RELATIONSHIP BETWEEN DENSITY OF EMERGED DENDROCTONUS PONDEROSAE (COLEOPTERA: SCOLYTIDAE) AND DENSITY OF EXIT HOLES IN LODGEPOLE PINE

1985 ◽  
Vol 117 (3) ◽  
pp. 267-275 ◽  
Author(s):  
L. Safranyik ◽  
D.A. Linton
Keyword(s):  
Mountain Pine Beetle ◽  
Lodgepole Pine ◽  
Latex Paint ◽  
Mountain Pine Beetles ◽  
Emergence Period ◽  
South Central ◽  
Mountain Pine ◽  
Pine Beetle ◽  
Pine Beetles ◽  
The Relationship

AbstractThe relationship between the density of insect holes in the bark (X1) and the density of emerged mountain pine beetles (Y) was investigated in naturally infested lodgepole pine in south-central British Columbia. The density of exit and ventilation holes (Ho) that were present in the bark prior to emergence by mountain pine beetle averaged 10% of all holes present following the emergence period. There was a weak but significant inverse relationship between Ho and both phloem thickness and density of emerged mountain pine beetles. Painting the bark with light-color latex paint did not affect survival or the temporal pattern of emergence by mountain pine beetle but ensured identification and greatly enhanced counting of fresh exit holes. Of the several regression models investigated, the relation between Y and both X1 and X2 (= X1 – Ho) was best fitted by a log-log linear model. A method is suggested for setting limits on the size of exit holes cut by mountain pine beetle in order to exclude from X2 much of the variation caused by exit holes cut by associated insects. A simple mathematical model was developed of the relationship between mean density of exit holes and the density of emerged mountain pine beetles.

DEVELOPMENT AND SURVIVAL OF AXENICALLY REARED MOUNTAIN PINE BEETLES, DENDROCTONUS PONDEROSAE (COLEOPTERA: SCOLYTIDAE), AT CONSTANT TEMPERATURES

1985 ◽  
Vol 117 (2) ◽  
pp. 185-192 ◽  
Author(s):  
L. Safranyik ◽  
H. S. Whitney
Keyword(s):  
Developmental Stages ◽  
Incubation Temperature ◽  
Adult Stage ◽  
Base Temperature ◽  
Heat Unit ◽  
Mountain Pine Beetles ◽  
Mountain Pine ◽  
Development Times ◽  
Temperature Heat ◽  
Pine Beetles

AbstractThe development and survival of mountain pine beetles axenically reared on standardized diet at 8 constant temperatures (10°–35 °C) were observed. At 32 °and 35 °C, 22 and 18% of the eggs hatched and all larvae died within 10 d of hatching. At the lower temperatures, 60–70% of the eggs hatched. The highest survival for all developmental stages was at 24 °C. At 10° and 15 °C development of all beetles reared in bolts of lodgepole pine or on axenic diet stopped when larvae were fully developed, whereas at 24 °and 27 °C all of the beetles developed normally to the adult stage. Larvae that had stopped developing during rearing at 15 °C resumed development after being transferred to 24 °C, indicating that pupation was limited by temperature. Although mean development times to the larval, pupal, and adult stages all decreased with increasing incubation temperature, heat-unit requirements above a base temperature of 5.6 °C were lowest for individuals reared at 27 °and 24 °C for all developmental stages. At these temperatures, an estimated average of 673 and 674 degree-days above 5.6 °C were required for development from egg to the tanned (dark) adult stage, respectively. The average widths of the prothorax and the sex ratios of axenic beetles were within published ranges. Mean development times and heat-unit requirements at constant temperatures for development to various life stages agreed well with published field and laboratory studies from western Canada.

scholarly journals Hedonic Valuation with Translating Amenities: Mountain Pine Beetles and Host Trees in the Colorado Front Range

2014 ◽  
Vol 63 (3) ◽  
pp. 613-642 ◽  
Author(s):  
Jed Cohen ◽  
Christine E. Blinn ◽  
Kevin J. Boyle ◽  
Thomas P. Holmes ◽  
Klaus Moeltner
Keyword(s):  
Colorado Front Range ◽  
Front Range ◽  
Mountain Pine Beetles ◽  
Hedonic Valuation ◽  
Host Trees ◽  
Mountain Pine ◽  
Pine Beetles

A comparison of mycangial and phoretic fungi of individual mountain pine beetles

2003 ◽  
Vol 33 (7) ◽  
pp. 1331-1334 ◽  
Author(s):  
Diana L Six
Keyword(s):  
Mountain Pine Beetle ◽  
External Surface ◽  
Ophiostomatoid Fungi ◽  
Cross Contamination ◽  
Mountain Pine Beetles ◽  
Mountain Pine ◽  
Pine Beetle ◽  
Pine Beetles ◽  
Ophiostoma Montium ◽  
Ophiostomatoid Fungus

Two ophiostomatoid fungi, Ophiostoma clavigerum (Robinson-Jeffrey & Davidson) Harrington and Ophiostoma montium (Rumbold) von Arx, are known to be associated with the mycangia of the mountain pine beetle, Dendroctonus ponderosae Hopkins. However, virtually nothing is known regarding the phoretic fungi carried on the external surface of the exoskeleton of this beetle. In this study, I compared the phoretic fungi of individual D. ponderosae with the fungi carried in their mycangia. As many beetles carried ophiostomatoid fungi on the exoskeleton as in the mycangia; however, the species of ophiostomatoid fungus carried phoretically on an individual beetle was not always the same as was carried in its mycangia. Ophiostoma montium was isolated more often from exoskeletal surfaces than from mycangia, while the reverse was true for O. clavigerum. It appears that O. clavigerum is highly adapted for mycangial dissemination, while O. montium is adapted to phoretic as well as mycangial dissemination. Ophiostoma ips (Rumbold) Nannf. was phoretic on two beetles, indicating that cross-contamination with fungi from cohabiting Ips spp. may sometimes occur. Several non-ophiostomatoid fungi were isolated from exoskeletal surfaces, but none consistently so. All non-ophiostomatoid fungi isolated were common saprophytes often found in beetle-killed trees. Yeasts were also common and were isolated more often from the exoskeleton than from mycangia.

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