Cold Tolerance of Four Species of Bark Beetle (Coleoptera: Scolytidae) in North America

Lombardero, Marı́a J.; Ayres, Matthew P.; Ayres, Bruce D.; Reeve, John D.

doi:10.1603/0046-225x-29.3.421

Cited by 96 publications

(79 citation statements)

References 72 publications

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“…quiescence. This finding runs contrary to that found for a study of the closely related Ips pini (Lombardero et al, 2000) which indicated that lipids were indeed the source of overwintering glycerol metabolism. Mixed evidence has been generated from similar metabolite assays conducted within Eurosta solidagensis.…”

Section: Glycerol Metabolism Involves Both Glycogenolysis and Gluconecontrasting

confidence: 99%

Cold tolerance and seasonal gene expression in Dendroctonus ponderosae.

Fraser¹

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Section: Glycerol Metabolism Involves Both Glycogenolysis and Gluconecontrasting

confidence: 99%

Cold tolerance and seasonal gene expression in Dendroctonus ponderosae.

Fraser¹

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“…This result does not support the hypotheses that glycerol is produced from the metabolism of triglycerides, and that triglycerides are used as an energy source for the mountain pine beetle postquiescence. This finding is contrary to that of a study of the closely related pine engraver Ips pini Say (Coleoptera: Curculionidae) (Lombardero et al, 2000) which indicated that lipids were the source of overwintering glycerol metabolism.…”

Section: Transcript Accumulation Indicates That Glycerol Biosynthesiscontrasting

confidence: 99%

Seasonal shifts in accumulation of glycerol biosynthetic gene transcripts in mountain pine beetle, Dendroctonus ponderosae Hopkins (Coleoptera: Curculionidae), larvae

Fraser

Bonnett

Keeling

et al. 2016

Preprint

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Winter mortality is a major factor regulating population size of the mountain pine beetle, Dendroctonus ponderosae Hopkins (Coleoptera: Curculionidae).Glycerol is the major cryoprotectant in this freeze intolerant insect. We report findings from a gene expression study on an overwintering mountain pine beetle population over the course of 35 weeks. mRNA transcript levels suggest glycerol production in the mountain pine beetle occurs through glycogenolytic, gluconeogenic and potentially glyceroneogenic pathways, but not from Abbreviations

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“…Numbers to the left and right of each bar indicate the composite pheromone signal: 1 ipsenol, 2 ipsenol+ipsdienol, 3 ipsdienol+lanierone, 4 ipsenol+ipsdi-enol+lanierone. Asterisks indicate three cases where the bars are very small but R is significantly positive (M males, F females) adult emergence from the first generation was near midsummer for I. pini (20 July), but after midsummer for I. grandicollis and I. perroti (31 July and 3 August, respectively), so multivoltinism only appears to be viable for I. pini (immatures of any species are unlikely to survive the winter ;Clemens 1916;Reid 1955;Lombardero et al 2000). Temporal overlap among species is increased by intraspecific variation in reproductive phenology.…”

Section: Discussionmentioning

confidence: 99%

Resource partitioning and overlap in three sympatric species of Ips bark beetles (Coleoptera: Scolytidae)

Ayres

Abrahamson

et al. 2001

Oecologia

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The bark beetles Ips pini, I. perroti, and I. grandicollis are sympatric in pine forests of the north-central United States. They share the same limited phloem resource and often coexist within the same host trees. We tested whether phloem resources are partitioned in time and space by measuring spatial and seasonal colonization of logs. Differences among species in flight phenology, development time, voltinism, and spatial colonization patterns within logs reduce, but do not eliminate, species overlap. The bark beetle species share predation by Thanasimus dubius (Cleridae) and Platysoma cylindrica (Histeridae), which exploit pheromone signals for prey location. We employed pheromone traps to test for chemical communication among bark beetle species. Heterospecific signals tend to be deterrents when they are added to conspecific signals but attractants when they are alone, indicating that the communication system can both reduce and increase species overlap in resource use depending upon relative abundance of the species. Deterrence by heterospecific signals is probably a result of selection for minimizing interspecific competition. However, individuals may sometimes benefit from joining aggregations of other species because of (1) predator swamping, (2) improved success in attacking live trees, and (3) location of suitable, recently dead, trees. These benefits should be greatest for males (which locate and colonize host trees before signalling females) and indeed males tended to be more attracted than females by heterospecific signals. Shared resources, shared predators, and heterospecific pheromone communication all contribute to species interactions in this guild of bark beetles, but predicting whether the removal of one species will tend to increase or decrease the abundance of remaining species remains difficult. Species interactions are likely conditional and coexistence is probably promoted by benefits to rare species of multispecies associations.

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Cold Tolerance of Four Species of Bark Beetle (Coleoptera: Scolytidae) in North America

Cited by 96 publications

References 72 publications

Cold tolerance and seasonal gene expression in Dendroctonus ponderosae.

Cold tolerance and seasonal gene expression in Dendroctonus ponderosae.

Seasonal shifts in accumulation of glycerol biosynthetic gene transcripts in mountain pine beetle, Dendroctonus ponderosae Hopkins (Coleoptera: Curculionidae), larvae

Resource partitioning and overlap in three sympatric species of Ips bark beetles (Coleoptera: Scolytidae)

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