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389 results for “Bark beetle”
Three ophiostomatalean fungi associated with bark beetles from Pinus thunbergii infested by Bursaphelenchus xylophilus in Laoshan Mountain (Shandong, China)
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FIGURE 21 in An illustrated key to the Afrotropical bark beetle species of Cladoctonus Strohmeyer (Curculionidae, Scolytinae)-a genus of rare cossonine look-alikes
FIGURE 21. Known geographical records of Cladoctonus in Africa.
FIGURES 17–20 in An illustrated key to the Afrotropical bark beetle species of Cladoctonus Strohmeyer (Curculionidae, Scolytinae)-a genus of rare cossonine look-alikes
FIGURES 17–20. Dorsal, posterior, lateral and front view of Cladoctonus similis male.
Figure 1 from: Dole SA, Hulcr J, Cognato AI (2021) Species-rich bark and ambrosia beetle fauna (Coleoptera, Curculionidae, Scolytinae) of the Ecuadorian Amazonian Forest Canopy. In: Spence J, Casale A, Assmann T, Liebherr JК, Penev L (Eds) Systematic Zoology and Biodiversity Science: A tribute to Terry Erwin (1940-2020). ZooKeys 1044: 797-813. https://doi.org/10.3897/zookeys.1044.57849
Figure 1 A species accumulation curves for Onkone Gare B species accumulation curves for Tiputini C species richness estimators for Onkone Gare D species richness estimators for Tiputini E species accumulation curves for both sites combined F species richness estimators for both sites combined.
Lignin concentrations in phloem and outer bark are not associated with resistance to mountain pine beetle in high elevation pines
<p>A key component to understanding plant-insect interactions is the nature of host defenses. Research on defense traits among <i>Pinus</i> species has focused on specialized metabolites and axial resin ducts, but the role of lignin in defense within diverse systems is unclear. We investigated lignin levels in the outer bark and phloem of <i>P. longaeva</i>, <i>P. balfouriana</i>,<i> </i>and<i> P. flexilis</i>; high elevation species in the western United States known to differ in susceptibility to mountain pine beetle (<i>Dendroctonus ponderosae</i>; MPB). Relative to <i>P. flexilis</i>, <i>P. longaeva</i> and <i>P. balfouriana</i> are attacked by MPB less frequently, and MPB brood production in <i>P. longaeva</i> is limited. Because greater lignification of feeding tissues has been shown to provide defense against bark beetles in related genera, such as <i>Picea</i>, we hypothesized that <i>P. longaeva</i> and <i>P. balfouriana</i> would have greater lignin concentrations than <i>P. flexilis</i>. Contrary to expectations, we found that the more MPB-susceptible <i>P. flexilis</i> had greater phloem lignin levels than the less susceptible <i>P. longaeva</i> and <i>P. balfouriana</i>. No differences in outer bark lignin levels among the species were found. We conclude that lignification in <i>Pinus</i> phloem and outer bark is likely not adaptive as a physical defense against MPB.</p>
Figure 1 from: Arthofer W, Avtzis D, Riegler M, Stauffer C (2010) Mitochondrial phylogenies in the light of pseudogenes and Wolbachia: re-assessment of a bark beetle dataset. ZooKeys 56: 269-280. https://doi.org/10.3897/zookeys.56.531
Figure 1 - in situ hybridization with wsp specific probe and staining with NBT/BCIP solution on uninfected A and Wolbachia infected Drosophila simulans B. An accumulation of dark color is observed only in ovarioles of Wolbachia infected Drospohila simulans. C Results of in situ hybridization of ovarial tissue excised from one Pityogenes chalcographus individual with accumulation of dark color (arrows). Three specimens were analysed. All ictures taken with 40-fold magnification.
Figure 1 from: Kirkendall L, Faccoli M (2010) Bark beetles and pinhole borers (Curculionidae, Scolytinae, Platypodinae) alien to Europe. ZooKeys 56: 227-251. https://doi.org/10.3897/zookeys.56.529
Figure 1 - The accelerating rate of discovery of introduced Scolytinae and Platypodinae in Europe, shown as numbers of new species found in each 30-year period (data from Table 2).
Figures 17-27 from: (2010) The Banded Elm Bark Beetle, Scolytus schevyrewi Semenov (Coleoptera, Curculionidae, Scolytinae) in North America: a taxonomic review and modifications to the Wood (1982) key to the species of Scolytus Geoffroy in North and Central America. ZooKeys 56: 207-218. https://doi.org/10.3897/zookeys.56.527
Figures 17-27 - 17-20 Variation in spine on abdominal sternum 2 of Scolytus schevyrewi 21 Posterior view of abdominal sterna of Scolytus schevyrewi 22 Lateral view of abdominal sterna of Scolytus schevyrewi with two abdominal spines 23 Posterior view of abdominal sterna of Scolytus schevyrewi with two abdominal spines 24–26 Dorsal habitus and variation in elytral and pronotal coloration of Scolytus schevyrewi 27 Dorsal view of left elytron of Scolytus schevyrewi.
Fugires 13-16 from: (2010) The Banded Elm Bark Beetle, Scolytus schevyrewi Semenov (Coleoptera, Curculionidae, Scolytinae) in North America: a taxonomic review and modifications to the Wood (1982) key to the species of Scolytus Geoffroy in North and Central America. ZooKeys 56: 207-218. https://doi.org/10.3897/zookeys.56.527
Fugires 13-16 - 13 Posterior view of abdominal sterna of Scolytus piceae 14 Dorsal view of left elytron of Scolytus piceae 15 Dorsal habitus of Scolytus piceae 16 Lateral habitus of Scolytus piceae.
Fugires 11-12 from: (2010) The Banded Elm Bark Beetle, Scolytus schevyrewi Semenov (Coleoptera, Curculionidae, Scolytinae) in North America: a taxonomic review and modifications to the Wood (1982) key to the species of Scolytus Geoffroy in North and Central America. ZooKeys 56: 207-218. https://doi.org/10.3897/zookeys.56.527
Fugires 11-12 - 11 Oblique lateral view of abdominal sterna of female Scolytus unispinosus LeConte 12 Oblique lateral view of abdominal sterna of male Scolytus unispinosus LeConte.
Fugires 1-5 from: (2010) The Banded Elm Bark Beetle, Scolytus schevyrewi Semenov (Coleoptera, Curculionidae, Scolytinae) in North America: a taxonomic review and modifications to the Wood (1982) key to the species of Scolytus Geoffroy in North and Central America. ZooKeys 56: 207-218. https://doi.org/10.3897/zookeys.56.527
Fugires 1-5 - 1 Lateral view of spine on abdominal sternum 2 of Scolytus multistriatus 2 Lateral view of abdominal sterna of Scolytus multistriatus, showing lateral tubercles 3 Ventral view of abdominal sterna of Scolytus multistriatus 4 Dorsal habitus of Scolytus multistriatus 5 Lateral habitus of Scolytus multistriatus.
Fugires 6-10 from: (2010) The Banded Elm Bark Beetle, Scolytus schevyrewi Semenov (Coleoptera, Curculionidae, Scolytinae) in North America: a taxonomic review and modifications to the Wood (1982) key to the species of Scolytus Geoffroy in North and Central America. ZooKeys 56: 207-218. https://doi.org/10.3897/zookeys.56.527
Fugires 6-10 - 1 Lateral view of abdominal sterna of Scolytus piceae 7 Lateral view of abdominal sterna of Scolytus schevyrewi 8 Oblique lateral view of abdominal sterna of Scolytus schevyrewi 9 Ventral view of abdominal sterna of Scolytus piceae 10 Ventral view of abdominal sterna of Scolytus schevyrewi.
Figure 2 from: Kirkendall L, Faccoli M (2010) Bark beetles and pinhole borers (Curculionidae, Scolytinae, Platypodinae) alien to Europe. ZooKeys 56: 227-251. https://doi.org/10.3897/zookeys.56.529
Figure 2 - The numbers of alien bark beetles and pinhole borers per European country (data from Table 2).
Supplementary material 1 from: Cocos D, Klapwijk MJ, Schroeder M (2023) Tree species preference and impact on native species community by the bark beetle Ips amitinus in a recently invaded region. In: Jactel H, Orazio C, Robinet C, Douma JC, Santini A, Battisti A, Branco M, Seehausen L, Kenis M (Eds) Conceptual and technical innovations to better manage invasions of alien pests and pathogens in forests. NeoBiota 84: 349-367. https://doi.org/10.3897/neobiota.84.86586
Ips amitinus description, table S1
Supplementary material 1 from: Justesen MJ, Hansen AK, Knížek M, Lindelow Å, Solodovnikov A, Ravn HP (2023) Taxonomic reappraisal of the European fauna of the bark beetle genus Cryphalus (Coleoptera, Curculionidae, Scolytinae). ZooKeys 1179: 63-105. https://doi.org/10.3897/zookeys.1179.101388
Lateral and dorsal photographs of male genitalia of five European Cryphalus species
Recent bark beetle outbreaks influence wildfire severity in mixed-conifer forests of the Sierra Nevada, California, USA
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Data from: Bark beetles attacking conifer seedlings: picking on the weakest or feasting upon the fittest?
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Data from: Debarking harvesters simultaneously combat the European spruce bark beetle Ips typographus and conserve non-target beetle diversity
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Data from: Colonization of weakened trees by mass-attacking bark beetles: no penalty for pioneers, scattered initial distributions and final regular patterns
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Data from: Bark beetles use a spring-loaded mechanism to produce variable song patterns
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