EGG GALLERY, BROOD PRODUCTION, AND ADULT CHARACTERISTICS OF MOUNTAIN PINE BEETLE, DENDROCTONUS PONDEROSAE HOPKINS (COLEOPTERA: SCOLYTIDAE), IN THREE PINE HOSTS

1995 ◽  
Vol 127 (6) ◽  
pp. 955-965 ◽  
Author(s):  
H.F. Cerezke
Keyword(s):  
Mountain Pine Beetle ◽  
Lodgepole Pine ◽  
Dendroctonus Ponderosae ◽  
Jack Pine ◽  
Brood Production ◽  
East Central ◽  
Limber Pine ◽  
Mountain Pine ◽  
Pine Beetle ◽  
Jack Pine Forests

AbstractDuring the 1977–1986 outbreak of mountain pine beetle (Dendroctonus ponderosae) in southwestern Alberta and Saskatchewan, populations of this beetle developed in lodgepole pine and limber pine stands, and threatened to spread northeasterly to the extensive jack pine forests in the central parts of the two provinces. To assess jack pine as a potential new breeding host, I compare egg galleries, brood production, and adult characteristics of D. ponderosae reared in lodgepole, limber, and jack pine logs. Brood productivity, beetle size, sex ratios, and egg gallery characteristics are described for beetle populations reared from naturally infested limber pine logs from southwestern Alberta, and from artificially infested jack pine logs from east-central Alberta and central Saskatchewan. In a field experiment where logs of the three hosts were placed together, adult beetles and their gallery characteristics are described and compared on the three hosts. The results confirm that jack pine is a viable host, that D. ponderosae’s attack characteristics, survival, and progeny on jack pine all appear comparable to those characters observed for beetles reared on lodgepole pine, and that limber pine is highly productive of beetle brood.

HOST EFFECTS ON ALLOZYME AND MORPHOLOGICAL VARIATION OF THE MOUNTAIN PINE BEETLE, DENDROCTONUS PONDEROSAE HOPKINS (COLEOPTERA: SCOLYTIDAE)

1991 ◽  
Vol 123 (2) ◽  
pp. 395-410 ◽  
Author(s):  
David W. Langor ◽  
John R. Spence
Keyword(s):  
Genetic Differentiation ◽  
Morphological Variation ◽  
Host Species ◽  
Mountain Pine Beetle ◽  
Lodgepole Pine ◽  
Dendroctonus Ponderosae ◽  
Limber Pine ◽  
Mountain Pine ◽  
Pine Beetle ◽  
A Site

AbstractAllozyme and morphological variation were investigated for mountain pine beetle populations in limber pine and lodgepole pine in Alberta and British Columbia. Fourteen gene loci, five of which were polymorphic, were studied. Heterozygote deficiencies were detected at the ME locus for 13 of the 16 groups of beetles sampled. Selection against heterozygotes appears to be the most plausible explanation. There was no significant difference in heterozygosity between beetles from lodgepole pine and those from limber pine. Relatively high levels of genetic differentiation, in terms of allele frequency, were observed among beetles from different sites, host species, seasons, and individual conspecific trees within a site. Low levels of differentiation were observed between beetle generations at a site and between sexes. We attribute significant host-associated genetic differentiation to differential survival in hosts rather than to differential host preference of beetle genotypes. Standardized discriminant function analysis of 12 morphological characters indicated significant differences in beetle shape between sexes, host species, and among sites. Overall, there was little evidence of preferential host selection by beetles which would imply substructuring of Dendroctonus ponderosae Hopkins populations along host lines.

OBSERVATIONS ON A TRIAL OF BROADCAST BURNING TO CONTROL AN INFESTATION OF THE MOUNTAIN PINE BEETLE DENDROCTONUS PONDEROSAE

1989 ◽  
Vol 121 (6) ◽  
pp. 521-523 ◽  
Author(s):  
A.J. Stock ◽  
R.A. Gorley
Keyword(s):  
Pinus Contorta ◽  
Mountain Pine Beetle ◽  
Lodgepole Pine ◽  
Dendroctonus Ponderosae ◽  
Management Plan ◽  
Management Program ◽  
Control Measures ◽  
Direct Control ◽  
Mountain Pine ◽  
Pine Beetle

The mountain pine beetle, Dendroctonus ponderosae Hopk., causes extensive mortality of lodgepole pine, Pinus contorta var. latifolia Engelm., throughout western North America (Van Sickle 1982). The Prince Rupert Forest Region, in the northwest of British Columbia, initiated an aggressive beetle management program in 1981. Logging of infested stands, and winter felling and burning of individual infested trees are the most common direct control techniques.The “Bristol Lake” infestation developed in the Bulkley Forest District, approximately 55 km northwest of Smithers, B.C., on a steep rocky ridge within the valley of Harold Price Creek. The area contained large volumes of mature lodgepole pine, and control of the infestation was therefore considered critical to the local beetle management plan, but the size (50 ha) and rough topography of the infested area precluded normal direct control measures.

DENDROCTONUS PONDEROSAE (COLEOPTERA: SCOLYTIDAE): PRE-AGGREGATION LANDING AND GALLERY INITIATION ON LODGEPOLE PINE

1980 ◽  
Vol 112 (2) ◽  
pp. 185-191 ◽  
Author(s):  
Barry G. Hynum ◽  
Alan A. Berryman
Keyword(s):  
Pinus Contorta ◽  
Mountain Pine Beetle ◽  
Lodgepole Pine ◽  
Dendroctonus Ponderosae ◽  
Mountain Pine ◽  
Pine Beetle

AbstractLanding rates as monitored by landing traps indicate that the mountain pine beetle, Dendroctonus ponderosae Hopkins, is not attracted to lodgepole pine, Pinus contorta Dougl., prior to the first gallery start. Bark terpene odors and DBH were not correlated with beetle landing rates, with the exception of beta-phellandrene which accounted for a statistically significant 18% of the variation in landing rates. Beetles were unable to distinguish between hosts, dead hosts and nonhosts during landing. The elderberry pith bioassay indicated the presence of a gallery initiation stimulant in the bark.

Pre-logging Baiting with Semiochemicals for the Mountain Pine Beetle, Dendroctonus Ponderosae, in High Hazard Stands of Lodgepole Pine

1986 ◽  
Vol 62 (1) ◽  
pp. 20-23 ◽  
Author(s):  
J. H. Borden ◽  
L. J. Chong ◽  
T. E. Lacey
Keyword(s):  
Pinus Contorta ◽  
Mountain Pine Beetle ◽  
Lodgepole Pine ◽  
Dendroctonus Ponderosae ◽  
Cost Effective ◽  
Additional Advantage ◽  
Mountain Pine ◽  
Massive Influx ◽  
Pine Beetle ◽  
High Hazard

Baiting of trees with attractive semiochemicals prior to logging in three high hazard blocks of lodgepole pine (Pinus contorta var. latifolia Engelm.) was effective in inducing attack by the mountain pine beetle (Dendroctonus ponderosae Hopkins) on baited trees and on surrounding unbaited trees. There was evidence for partial shifting of attack loci, concentration of dispersing beetles and containment of emergent beetles as a result of the baiting program. However, baiting was ineffective when the baits were within the understory canopy, and the baiting program did not cause a massive influx of beetles from infestations 75-200 m away from the baited blocks. Such baiting programs would be cost effective if they avoided the necessity of disposing of two attacked trees/ha outside of the baited blocks. They have the additional advantage of reducing the risk of future beetle attacks by removing beetles and their broods during logging of induced infestations.

Testing for trade-offs between flight and reproduction in the mountain pine beetle (Coleoptera: Curculionidae) on two pine (Pinaceae) hosts

2019 ◽  
Vol 151 (3) ◽  
pp. 298-310 ◽  
Author(s):  
Asha Wijerathna ◽  
Caroline Whitehouse ◽  
Heather Proctor ◽  
Maya Evenden
Keyword(s):  
Pinus Banksiana ◽  
Mountain Pine Beetle ◽  
Lodgepole Pine ◽  
Jack Pine ◽  
Tree Level ◽  
Offspring Sex Ratio ◽  
Individual Tree ◽  
Mountain Pine ◽  
Trade Offs ◽  
Pine Beetle

AbstractMountain pine beetle, Dendroctonus ponderosae Hopkins (Coleoptera: Curculionidae: Scolytinae), adults fly to disperse before host colonisation. The effect of flight on reproduction was tested by comparing the number and quality of offspring from beetles flown on flight mills to that of unflown control beetles. Beetles reproduced in bolts of their native host, lodgepole pine (Pinus contorta var. latifolia Engelmann (Pinaceae)), or a novel host, jack pine (Pinus banksiana Lambert (Pinaceae)). Bolts infested by control beetles produced more offspring overall than bolts with flown beetles. The effect of pine species on the number of offspring produced per bolt varied by individual tree. Flown adults produced fewer offspring compared to control parents in all bolts in jack pine regardless of the tree, but tree-level variation was visible in lodgepole pine. An interaction between flight treatment and tree host affected beetle body condition. More offspring emerged from jack pine, but higher quality offspring emerged from lodgepole pine. The offspring sex ratio was female-biased regardless of parental flight treatment. This study reveals trade-offs between flight and reproduction in mountain pine beetle as measured at the level of the bolt.

scholarly journals The ecological interaction of the mountain pine beetle and jack pine budworm in the boreal forest

2010 ◽  
Vol 86 (6) ◽  
pp. 766-774 ◽  
Author(s):  
Lindsay J. Colgan ◽  
Nadir Erbilgin
Keyword(s):  
Climate Change ◽  
Boreal Forest ◽  
Mountain Pine Beetle ◽  
Dendroctonus Ponderosae ◽  
Jack Pine ◽  
Mountain Pine ◽  
Choristoneura Pinus ◽  
Pine Beetle ◽  
Jack Pine Budworm ◽  
Choristoneura Pinus Pinus

As climate change facilitates the range and host expansion of insect species into new ecosystems, the development of newstrategies for managing and preventing biological invasion is receiving considerable interest. In recent years, the range ofthe mountain pine beetle (Dendroctonus ponderosae Hopkins) has expanded from lodgepole pine-dominated forests eastof the Rocky Mountains into lodgepole x jack pine hybrid forest of western Alberta, and may soon invade jack pine forestsof the boreal. Our understanding of factors contributing colonization of jack pine by mountain pine beetle is far fromcomplete and several factors may limit its spread in these forests, including tree resistance and competitors. Among these,the jack pine budworm (Choristoneura pinus pinus Freeman) is one of the most important insect enemies of jack pine andan outbreak defoliator that potentially weakens jack pine trees, which may make them more susceptible to MPB attacks.To develop effective management strategies in the face of the short-run impacts of climate change, we need an in-depthunderstanding of factors influencing establishment and survival of the beetle in jack pine forests.Key words: Choristoneura pinus pinus, Dendroctonus ponderosae, jack pine, range expansion, invasion biology, climatechange in the boreal forest, conifer-mediated interactions, tree induced defences, tripartite interactions

HOST EFFECTS ON THE PHENOLOGY, DEVELOPMENT, AND MORTALITY OF FIELD POPULATIONS OF THE MOUNTAIN PINE BEETLE, DENDROCTONUS PONDEROSAE HOPKINS (COLEOPTERA: SCOLYTIDAE)

1989 ◽  
Vol 121 (2) ◽  
pp. 149-157 ◽  
Author(s):  
David W. Langor
Keyword(s):  
Gene Flow ◽  
Mountain Pine Beetle ◽  
Lodgepole Pine ◽  
Dendroctonus Ponderosae ◽  
Regular Monitoring ◽  
Limber Pine ◽  
Pine Beetle ◽  
Declining Populations ◽  
New Hosts ◽  
Better Than

AbstractPhenology, fecundity, development, and mortality were studied for co-occurring, declining populations of Dendroctonus ponderosae Hopkins in limber pine and lodgepole pine at two sites in the Porcupine Hills of southwestern Alberta in 1985–1986. Beetles reared in lodgepole pine emerged and attacked new hosts 7–8 days earlier than those in limber pine in 1985. Beetles were able to utilize over two-thirds of the length of each limber pine bole but only about one-third of the length of each lodgepole pine bole. Also, beetles infesting limber pine had significantly higher fecundity, produced more eggs per centimetre of gallery length, and their progeny developed faster and survived better than beetles infesting lodgepole pine. There was no apparent phenological or other barrier that might inhibit gene flow between D. ponderosae populations in limber pine and lodgepole pine. In the area studied, limber pine was a better host for D. ponderosae reproduction, development, and survival than was lodgepole pine. Thus, beetle populations may be able to increase much more quickly in limber pine, arguing for regular monitoring of these populations.

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