scholarly journals A temporal analysis of antioxidative defense responses in the phloem of Picea abies after attack by Ips typographus

2009 ◽  
Vol 29 (8) ◽  
pp. 1059-1068 ◽  
Author(s):  
A. Urbanek Krajnc
Keyword(s):  
Picea Abies ◽  
Temporal Analysis ◽  
Defense Responses ◽  
Ips Typographus ◽  
Antioxidative Defense

scholarly journals Merocoenoses of cambioxylophagous insect fauna of Norway spruce (Picea abies [L.] Karst.) with focus on bark beetles (Coleoptera: Scolytidae) and types of tree damage in different gradation conditions

2010 ◽  
Vol 56 (No. 10) ◽  
pp. 474-484 ◽  
Author(s):  
E. Kula ◽  
W. Ząbecki
Keyword(s):  
Picea Abies ◽  
Norway Spruce ◽  
Bark Beetles ◽  
Fungal Pathogens ◽  
Ips Typographus ◽  
Insect Fauna ◽  
Spruce Bark ◽  
Standing Trees ◽  
Spruce Stands ◽  
Endemic Population

Research on merocoenoses of cambioxylophagous insect fauna of Norway spruce (Picea abies [L.] Karst.) was carried out in spruce stands of different age in the area with an endemic population (Moravian-Silesian Beskids, Czech Republic) and in the area with an epidemic population (Beskid Żywiecki, Poland) of the eight-toothed spruce bark beetle Ips typographus (L.). The structure of merocoenoses was characterized separately for standing trees attacked by bark beetles, trees struck by lightning, trees affected by fungal pathogens and wind-felling and trees in the form of snags and fragments. The occurrence of cambioxylophagous insects, mostly bark beetles (Coleoptera: Scolytidae), was compared between the study areas with emphasis on dominant facultative primary bark beetles and types of damage to spruce trees.  

scholarly journals The alpha-cypermethrin coated net for protecting Norway spruce wood against bark beetles (Curculionidae, Scolytinae)

2015 ◽  
Vol 55 (2) ◽  
pp. 156-161 ◽  
Author(s):  
Iwona Skrzecz ◽  
Wojciech Grodzki ◽  
Mieczysław Kosibowicz ◽  
Dorota Tumialis
Keyword(s):  
Picea Abies ◽  
Norway Spruce ◽  
Bark Beetles ◽  
Early Spring ◽  
Ips Typographus ◽  
High Efficacy ◽  
Thanasimus Formicarius ◽  
Spruce Wood ◽  
Research Material ◽  
Negative Effect

Abstract The study estimated the efficacy of a net coated with alpha-cypermethrin used to protect Norway spruce [Picea abies (L.) H. Karst] wood against bark beetle infestations. The inside of the net was coated with 100 mg/m2 of alpha-cypermethrin. The studies carried out in 2010 and 2011 took place in southern Poland in the Beskid Żywiecki and Beskid Sądecki mountains in P. abies stands threatened by Ips typographus (Linnaeus, 1758). The research material consisted of wood logs taken off of 70–80-year-old P. abies trees. The logs were wrapped in the net in the early spring before spring swarming of bark beetles. The unwrapped logs were considered as the study controls. An evaluation of the treatments was performed after 2 months. The evaluation was based on the counting of bark beetles galleries found after removing the bark from the wrapped and unwrapped logs. There were no insect galleries on the wrapped logs. The net was a barrier, on which bark beetles died. About 10 dead I. typographus beetles were found on 0.01 m2 of the net surface. On the bark from the unwrapped-control logs there were 3,156 galleries/entrance holes of bark beetles, in total, of which 73% belonged to I. typographus, 13% to Pityogenes chalcographus (Linnaeus, 1761), and almost 10% to Xyloterus lineatus (Oliv.). These results indicated the high efficacy of the net coated with alpha-cypermethrin used for the protection of Norway spruce wood against the bark beetles. At the same time, the net was found to have a negative effect on non-target entomofauna, mainly Hylobius spp., Thanasimus formicarius (L.), and Tetropium castaneum (F.). However, the use of a net did not affect other predatory (Carabidae) and parasitic (Ichneumonidae and Tachinidae) entomofauna.

Exogenous application of methyl jasmonate elicits defenses in Norway spruce (Picea abies) and reduces host colonization by the bark beetle Ips typographus

Oecologia ◽  
2006 ◽  
Vol 148 (3) ◽  
pp. 426-436 ◽  
Author(s):  
Nadir Erbilgin ◽  
Paal Krokene ◽  
Erik Christiansen ◽  
Gazmend Zeneli ◽  
Jonathan Gershenzon
Keyword(s):  
Picea Abies ◽  
Methyl Jasmonate ◽  
Norway Spruce ◽  
Bark Beetle ◽  
Ips Typographus ◽  
Host Colonization ◽  
Exogenous Application

scholarly journals Disparity of Phoresy in Mesostigmatid Mites upon Their Specific Carrier Ips typographus (Coleoptera: Scolytinae)

Insects ◽  
2020 ◽  
Vol 11 (11) ◽  
pp. 771
Author(s):  
Marius Paraschiv ◽  
Gabriela Isaia
Keyword(s):  
Picea Abies ◽  
Norway Spruce ◽  
Mite Species ◽  
Ips Typographus ◽  
The Body ◽  
Immature Stages ◽  
Body Parts ◽  
Large Area ◽  
Important Pest ◽  
Symbiotic Fungi

Ips typographus Linnaeus, 1758, the most important pest of Norway spruce (Picea abies Linnaeus, 1753) from Eurasia has damaged, in the last decades, a large area of forest in Romania. Associations between beetles and their symbiotic fungi are well known compared to beetle-mite relationships. The objectives of the study are to determine: (i) the diversity of mites species associated with I. typographus in a local outbreak from Central Romania; (ii) the mite’s preferences concerning the body parts of their carriers; and (iii) how phoresy changes during seasonal flight activity of the host. A total of 7896 adult I. typographus were analyzed and six mite species (both adults and immature stages) were found: Dendrolaelaps quadrisetus Berlese,1920, Proctolaelaps fiseri Samsinak, 1960, Trichouropoda polytricha Vitzthum, 1923, Histiostoma piceae Scheucher, 1957, Uroobovella ipidis Vitzthum, 1923, and Uroobovella vinicolora Vitzthum, 1926. Most mites were observed under the carriers’ elytra (46.8%), while 26.7% and 25.8% were seen on the thorax and elytral declivities, respectively. Mite phoresy peaked in the spring corresponding to the dispersal flight of the carrier. A smaller peak in phoresy occurred in the summer during the second beetle generation.

Photosynthetic traits and antioxidative defense responses of Pinus yunnanensis after joint attack by bark beetles Tomicus yunnanensis and T. minor

2018 ◽  
Vol 30 (6) ◽  
pp. 2031-2038 ◽  
Author(s):  
Juan Liu ◽  
Hang Chen ◽  
Jianmin Wang ◽  
Xiaoming Chen ◽  
Zixiang Yang ◽  
...  
Keyword(s):  
Bark Beetles ◽  
Defense Responses ◽  
Antioxidative Defense ◽  
Pinus Yunnanensis ◽  
Photosynthetic Traits
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