Relationship Between Attacks by the Mountain Pine Cone Beetle (Coleoptera: Scolytidae) to Clone and Cone Color in Western White Pine

1983 ◽  
Vol 12 (4) ◽  
pp. 1289-1292 ◽  
Author(s):  
Michael J. Jenkins
Keyword(s):  
White Pine ◽  
Pine Cone ◽  
Mountain Pine ◽  
Western White Pine

Association of western white pine cone crops with weather variables

1976 ◽  
Vol 6 (1) ◽  
pp. 6-12 ◽  
Author(s):  
S. Eis
Keyword(s):  
White Pine ◽  
Weather Variables ◽  
Weather Factors ◽  
Daily Temperature Range ◽  
Cone Production ◽  
Pine Cone ◽  
Western White Pine ◽  
Cone Development ◽  
Sunny Weather ◽  
One Year

Twenty-one-year records of western white pine cone counts were analyzed with seven meteorological variables to find if any combinations of available weather factors were associated with the induction of reproductive buds and successful development of the strobili. The weather in three periods before the physical initiation of the potentially reproductive cycle showed association with cone counts: (1) sunny weather in June, 39 months before cone maturation; (2) warm, sunny, dry weather in September and October, 36 and 35 months before cone maturation; and (3) warm, sunny, dry weather with wide daily temperature range in June and July, 27 and 26 months before cone maturation, appeared to promote differentiation of potentially reproductive buds. During and after the initiation of bud primordia, the weather in four periods appeared to be associated with cone production: (1) warm and possibly wet weather in August, September, and October, 25 to 23 months before cone maturation; (2) rain in the third quarter of July, 4 weeks after pollination and 14 months before cone maturation; (3) warm temperatures in September, October, and November, 12 to 10 months before cone maturation; and (4) sunny, warm, dry weather in May, 4 months before cone maturation, appeared to be beneficial to cone development.

AN ANNOTATED LIST OF THE PARASITES, PREDATORS, AND OTHER ASSOCIATED FAUNA OF THE MOUNTAIN PINE BEETLE IN WESTERN WHITE PINE AND LODGEPOLE PINE

1934 ◽  
Vol 66 (3) ◽  
pp. 51-61 ◽  
Author(s):  
Donald de Leon
Keyword(s):  
Mountain Pine Beetle ◽  
White Pine ◽  
The Past ◽  
Annotated List ◽  
Mountain Pine ◽  
Pine Beetle ◽  
Western White Pine ◽  
Control Work ◽  
Eastern Washington ◽  
Seasonal History

The mountain pine beetle (Dendroctonus monticolae Hopk.) has killed millions of trees during the past ten years in Montana, Idaho, and eastern Washington. It was during a serious epidemic of this beetle that the writer undertook a study of the economic importance and biology of its enemies in an effort to determine what insects were the most beneficial and to work out their seasonal history so that artificial control work could be instituted, if possible, at a time that would destroy fewer beneficial insects.

EFFICACY OF ESFENVALERATE FOR CONTROL OF INSECTS HARMFUL TO SEED PRODUCTION IN DISEASE-RESISTANT WESTERN WHITE PINES

1994 ◽  
Vol 126 (1) ◽  
pp. 1-5 ◽  
Author(s):  
N.G. Rappaport ◽  
M.I. Haverty ◽  
P.J. Shea ◽  
R.E. Sandquist
Keyword(s):  
Seed Production ◽  
Pinus Monticola ◽  
White Pine ◽  
Blister Rust ◽  
Dioryctria Abietivorella ◽  
Pine Cone ◽  
Leptoglossus Occidentalis ◽  
Insecticide Efficacy ◽  
Western White Pine ◽  
Normal Seed

AbstractWe tested the pyrethroid insecticide esfenvalerate in single, double, and triple applications for control of insects affecting seed production of blister rust-resistant western white pine, Pinus monticola Douglas. All treatments increased the proportion of normal seed produced and reduced the proportion of seed damaged by the western conifer seed bug, Leptoglossus occidentalis Heidemann. Only the triple application reduced the proportion of cones killed by the pine cone beetle, Conophthorus ponderosae Hopkins. Other seed-damaging insect species [seed chalcids, Megastigmus sp.; the fir coneworm, Dioryctria abietivorella (Grote); and seedworms, Cydia sp.] were present but in numbers too low to test for insecticide efficacy.

Western white pine development in relation to biophysical characteristics across different spatial scales in the Coeur d'Alene River basin in northern Idaho, U.S.A.

2002 ◽  
Vol 32 (7) ◽  
pp. 1109-1125 ◽  
Author(s):  
Theresa B Jain ◽  
Russell T Graham ◽  
Penelope Morgan
Keyword(s):  
River Basin ◽  
Spatial Scales ◽  
Pinus Monticola ◽  
White Pine ◽  
Basal Diameter ◽  
Landscape Characteristics ◽  
Coeur D'alene ◽  
Biophysical Factors ◽  
Western White Pine ◽  
Northern Idaho

Many studies have assessed tree development beneath canopies in forest ecosystems, but results are seldom placed within the context of broad-scale biophysical factors. Mapped landscape characteristics for three watersheds, located within the Coeur d'Alene River basin in northern Idaho, were integrated to create a spatial hierarchy reflecting biophysical factors that influence western white pine (Pinus monticola Dougl. ex D. Don) development under a range of canopy openings. The hierarchy included canopy opening, landtype, geological feature, and weathering. Interactions and individual-scale contributions were identified using stepwise log–linear regression. The resulting models explained 68% of the variation for estimating western white pine basal diameter and 64% for estimating height. Interactions among spatial scales explained up to 13% of this variation and better described vegetation response than any single spatial scale. A hierarchical approach based on biophysical attributes is an excellent method for studying plant and environment interactions.

scholarly journals Compounding effects of white pine blister rust, mountain pine beetle, and fire threaten four white pine species

Ecosphere ◽  
2020 ◽  
Vol 11 (10) ◽  
Author(s):  
Joan C. Dudney ◽  
Jonathan C. B. Nesmith ◽  
Matthew C. Cahill ◽  
Jennifer E. Cribbs ◽  
Dan M. Duriscoe ◽  
...  
Keyword(s):  
Mountain Pine Beetle ◽  
White Pine Blister Rust ◽  
White Pine ◽  
Blister Rust ◽  
Mountain Pine ◽  
Pine Beetle ◽  
Pine Species

scholarly journals Whitebark pine mortality related to white pine blister rust, mountain pine beetle outbreak, and water availability

Ecosphere ◽  
2016 ◽  
Vol 7 (12) ◽  
Author(s):  
Erin Shanahan ◽  
Kathryn M. Irvine ◽  
David Thoma ◽  
Siri Wilmoth ◽  
Andrew Ray ◽  
...  
Keyword(s):  
Water Availability ◽  
Mountain Pine Beetle ◽  
Whitebark Pine ◽  
White Pine Blister Rust ◽  
White Pine ◽  
Blister Rust ◽  
Mountain Pine ◽  
Pine Beetle

Field evaluation of host kairomones and pheromones for capture of Conophthorus coniperda (Coleoptera: Scolytidae)

2006 ◽  
Vol 138 (5) ◽  
pp. 723-732 ◽  
Author(s):  
A.M. Brauner ◽  
P. de Groot
Keyword(s):  
Field Evaluation ◽  
Field Studies ◽  
Trap Catch ◽  
White Pine ◽  
Release Rates ◽  
Female Response ◽  
Pine Cone ◽  
Equivalent Efficacy ◽  
Trap Catches ◽  
Conophthorus Coniperda

AbstractField studies were conducted to determine the attractiveness of monoterpenes and pheromones to the white pine cone beetle, Conophthorus coniperda (Schwarz), the most destructive cone and seed pest of eastern white pine, Pinus strobus L. (Pinaceae). Limonene was identified as a new attractant that acts synergistically when added to the female-produced sex pheromone, pityol. Trap catches were higher with increasing release rates of S-(–)-limonene. The enantiomers of limonene showed equivalent efficacy on mean trap catch. (–)-β-Pinene was not attractive and may be repellent to both sexes, and (–)-α-pinene was shown to have no effect on female response when added to pityol or pityol + S-(–)-limonene. The pheromones trans-verbenol, trans-pinocarveol, and myrtenol were not attractive to C. coniperda.

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