Results 71 to 80 of about 1,413 (203)

A Population Genetic Model of Evolution of Host-Mate Attraction and Nonhost Repulsion in a Bark Beetle Pityogenes bidentatus

Psyche: A Journal of Entomology, 2012
Studies have shown that the bark beetle Pityogenes bidentatus (Coleoptera, Curculionidae, Scolytinae) avoids volatiles of nonhost trees (Norway Spruce, birch, and oak) and healthy host Scotch Pine when orienting to aggregation pheromone.
John A. Byers
doaj   +1 more source

Spatial distribution of four spruce bark beetles in north-western Slovakia

Journal of Forest Science, 2007
Infestation density of four the most common spruce bark beetle species was estimated on 15 study sites (10 trees per site) in the Kysuce model region in 2006.
M. Turčáni, T. Hlásny
doaj   +1 more source

Bark beetle population dynamics in the Anthropocene: Challenges and solutions [PDF]

, 2019
Tree-killing bark beetles are the most economically important insects in conifer forests worldwide. However, despite N200 years of research, the drivers of population eruptions and crashes are still not fully understood and the existing knowledge is thus
Biedermann, P., Bässler, C., Gruppe, A., Grégoire, J., Hagge, J., Hammerbacher, A., Hofstetter, R., Kandasamy, D., Kolarik, M., Kostovcik, M., Krokene, P., Müller, J., Sallé, A., Six, D., Turrini, T., Vanderpool, D., Wingfield, M.   +16 more
core   +3 more sources

(−)‐myrtenol and (−)‐α‐pinene: Aggregation pheromone components of the cypress bark beetle Phloeosinus aubei

Journal of Applied Entomology, Volume 148, Issue 4, Page 351-363, May 2024.
Abstract The cypress bark beetle, Phloeosinus aubei, is of increasing concern in the European market of scale‐leafed conifers. Neither the reproductive behaviour nor the chemical ecology have been studied in detail so far, and no specific attractant traps are available to monitor the flight of adults.
Gábor Bozsik, Béla Péter Molnár, Kristóf Hegedüs, Tibor Soós, Stefan Schulz, Armin Tröger, Wittko Francke, Gábor Szőcs   +7 more
wiley   +1 more source

Non-target Bark Beetles in Ips duplicatus (Sahlberg) Pheromone Traps Baited with Host Volatiles

Notulae Botanicae Horti Agrobotanici Cluj-Napoca, 2015
Response of several non-target bark beetles (Coleoptera: Curculionidae, Scolytinae) to different combinations of the northern spruce bark beetle’s synthetic pheromone with the monoterpenes (-)-alpha-pinene and (+)-limonene has been studied in choice ...
Mihai-Leonard DUDUMAN, Nicolai OLENICI
doaj   +1 more source

Consecutive Reactions with Sulfoximines: Straightforward Synthesis of Substituted 5,5-Spiroketals [PDF]

, 2011
International audienceAn efficient sysnthesis of 5,5-spiroketals, i.e. 1,6-dioxaspiro[4.4]nonane derivatives, is described from 2-(sulfonimidoylmethylene)tetrahydrofurans involving a consecutive epoxide opening / oxa-Michael spiroketalization sequence ...
Bonne, Damien, Bressy, Cyril, Chouraqui, Gaëlle, Commeiras, Laurent, Coquerel, Yoann, Parrain, Jean-Luc, Rodriguez, Jean, Sridharan, Vellaisamy, Virolleaud, Marie-Alice, Vologdin, Nikolay   +9 more
core   +3 more sources

Spruce windfalls and cambioxylophagous fauna in an area with the basic and outbreak state of Ips typographus

Journal of Forest Science, 2006
In spruce windfalls incurred in the autumn and winter season the synusia of cambioxylophagous fauna was evaluated in the profile of a whole stem and crown branches according to the species spectrum, tree cover and intensity of attack.
E. Kula, W. Ząbecki
doaj   +1 more source

Regeneration in gap models: priority issues for studying forest responses to climate change [PDF]

, 2001
Recruitment algorithms in forest gap models are examined with particular regard to their suitability for simulating forest ecosystem responses to a changing climate. The traditional formulation of recruitment is found limiting in three areas.
Clark, D.F., Jorritsma, I.T.M., Lasch, P., Leadley, P., Lexer, M.J., McNulty, S., Meer, P.J., van der, Price, D.T., Schaber, J., Smith, B., Wu, J., Zimmermann, N.E.   +11 more
core   +2 more sources

Patogeni žuželk s poudarkom na patogenih podlubniih (COL., Scolytidae: Ips typographus L.) : preliminarni rezultati o izolaciji entomopatogenih gliv iz dveh smrekovih podlubnikov v Sloveniji [PDF]

, 2017
This paper deals with the most important groups of insect pathogens, i.e. viruses, bacteria, fungi, nematodes and protozoans (microsporidia). We describe their basic characteristics, virulence, method of infecting or attackon the host, signs of illnesses
Jurc, Maja
core  

Bark- and wood-boring beetles on Scots pine logging residues from final felling: Effects of felling date, deposition location and diameter of logging residues

Annals of Forest Research, 2015
To reduce the risk of bark- and wood-boring beetle pests, the extensive removal of logging residues is conducted in forests; however, this practice can lead to a loss of saproxylic insect diversity.
Jiří Foit
doaj   +1 more source