Results 211 to 220 of about 10,203 (266)

Conifer bark beetles

Current Biology, 2021
Fettig and Audley introduce the bark beetles-a large and diverse group of insects of which some are commonly recognized as important disturbance agents in conifer forests.
Christopher J, Fettig, Jackson P, Audley
openaire   +2 more sources

An olfactometer for bark beetle parasites

Journal of Chemical Ecology, 1981
An "H"-type olfactometer was designed and built to test the response of bark beetle parasites to various beetle and tree host odors. The design has several advantages over other types of olfactometers. Strong air currents are not utilized, parasites have free movement in the test chamber, and a concentration gradient of test compound is maintained ...
L H, Kudon, C W, Berisford
openaire   +2 more sources

Pheromone production in bark beetles

Insect Biochemistry and Molecular Biology, 2010
The first aggregation pheromone components from bark beetles were identified in 1966 as a mixture of ipsdienol, ipsenol and verbenol. Since then, a number of additional components have been identified as both aggregation and anti-aggregation pheromones, with many of them being monoterpenoids or derived from monoterpenoids.
Gary J, Blomquist   +7 more
openaire   +2 more sources

Pheromone biosynthesis in bark beetles

Current Opinion in Insect Science, 2017
Pine bark beetles rely on aggregation pheromones to coordinate mass attacks and thus reproduce in host trees. The structural similarity between many pheromone components and those of defensive tree resin led to early suggestions that pheromone components are metabolic derivatives of ingested precursors.
Claus, Tittiger, Gary J, Blomquist
openaire   +2 more sources

Bark Beetles of Mediterranean Conifers

2016
Bark beetles of conifer trees in the Mediterranean basin play a relevant ecological and economic role in forest ecosystem functioning. Their activity often reflects the health conditions of the stands, while some species may become tree killers causing large outbreaks.
Lieutier, François   +2 more
openaire   +2 more sources

Radar Satellite Imagery for Detecting Bark Beetle Outbreaks in Forests

open access: yesCurrent Forestry Reports, 2019
Purpose of Review The overall objective of this paper is to review the state of knowledge on the application of radar data for detecting bark beetle attacks in forests. Due to the increased availability of high spatial and temporal resolution radar data
Markus Hollaus, Mariette Vreugdenhil
exaly   +2 more sources

Bark Beetles [PDF]

open access: possible, 2017
Revised.
Day, Eric R., McCraw, Olivia C.
openaire  

Predation and bark beetle dynamics

Oecologia, 1997
Bark beetle populations may undergo dramatic fluctuations and are often important pests in coniferous forests. Their dynamics are thought to be primarily driven by factors affecting the resistance of the host tree to attack, i.e., bottom-up forces, while natural enemies are usually assigned a minor role in these systems.
openaire   +2 more sources

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