Results 151 to 160 of about 801 (188)

2-Ethyl-1,6-dioxaspiro[4.4]nonane, principal aggregation pheromone of Pityogenes chalcographus (L.)

Naturwissenschaften, 1977
W. Francke, V. Heemann, B. Gerken, J. Renwick, J. P. Vité   +4 more
semanticscholar   +2 more sources

Untersuchungen zur abundanzdynamischen Relevanz der Beifänge von Nemosoma elongatum (L.) (Col., Ostomidae) in chalcoprax® beköderten Flugbarrierefallen für Pityogenes chalcographus (L.) (Col., Scolytidae)

Journal of Applied Entomology, 1994
P. Baier
exaly   +2 more sources

Učinkovitost suhih i mokrih naletno barijernih feromonskih klopki i feromonskih atraktanata na broj ulovljenih potkornjaka ips typographus l., pityogenes chalcographus l., ips sexdentatus boerner, i pityokteines curvidens germar

Radovi Šumarskog fakulteta Univerziteta u Sarajevu
The research analyzed the effectiveness of dry and wet pheromone traps and pheromone attractans from producer Ipsolab in Bosnia and Herzegovina. During 2023, pheromone traps with pheromone attractants were deployed in the field, and the population of ...
Kenan Zahirović, Osman Mujezinović, Merisa Osmanović, Sead Ivojević, Mirza Dautbašić   +4 more
semanticscholar   +1 more source

Therapeutic Bark Gouging as an Effective Complement for the Management of Ips typographus and Pityogenes chalcographus While Preserving Habitat for Secondary Scolytine (Coleoptera: Curculionidae) Species

Journal of applied entomology
Norway spruce will likely remain an important tree species in Europe over the next few decades despite efforts to transform forests and reduce its distribution range more to its natural range.
Tobias Frühbrodt, H. Lemme, W. A. Hahn
semanticscholar   +1 more source

The development and reproductive success of Pityogenes chalcographus (L.) at different generations in trap trees

2021
Sylwan 165 (10): 738 ...
Kacprzyk, Magdalena, Bednarz, Bartłomiej   +1 more
openaire   +1 more source

Cytologie und Spermapolyploidie bei Pityogenes chalcographus L. (Col., Scolytidae)

Journal of Applied Entomology, 1986
AbstractCytology and spermpolyploidy in Pityogenes chalcographus L. (Col., Scolytidae)These experiments are based on the biological relationship that a partial reproductive incompatibility does exist between certain populations of Pityogenes chalcographus.
openaire   +1 more source

Isoenzymanalyse verschiedener Populationen vonPityogenes chalcographus L.(Col., Scolytidae)

Journal of Applied Entomology, 1990
AbstractIsoenzymeanalysis of different populations in Pityogenes chalcographus L. (Col., Scolytidae) II. Population structure, differentiation of populationsSix populations of the spruce bark beetlePityogenes chalcographusfrom Scandinavia (Finland, Norway) Eastern and Central Europe (Poland, Federal Republic of Germany, Austria) were analysed for their
openaire   +1 more source

Brutexperimente mit Pityogenes chalcographus L. an verschiedenen Nadelbaumarten¹

Zeitschrift für Angewandte Entomologie, 1983
AbstractExperimental breeding of Pityogenes chalcographus L. in different conifersWhen Pityogenes chalcographus L. (Coleoptera, Scolytidae) is experimentally inoculated to different conifer species, its ability for using these kinds of brood material varies according to the genetical status of the insect population.
Erwin Führer, Bertold Mühlenbrock
openaire   +1 more source

Production of pheromone components, chalcogran and methyl (E,Z)-2,4-decadienoate, in the spruce engraver Pityogenes chalcographus

Journal of Insect Physiology, 1990
Abstract Capillary gas chromatography and mass spectrometry were used to quantify the amounts of E- and Z- chalcogran and methyl (E,Z)-2,4-decadienoate (E,Z-MD), pheromone synergists of the bark beetle Pitygenes chalcographys (Coleoptera: Scolytidae).
Göran Birgersson, John A. Byers, Gunnar Bergström, Jan Löfqvist   +3 more
openaire   +1 more source

Observations on the activity and development of Pityogenes chalcographus L. (Col., Scolytidae) in stands of Norway spruce in Denmark

Journal of Applied Entomology, 1986
AbstractExploitation of thinnings in young stands of Norway spruce for the production of chips necessitates a period of seasoning of the felled trees in the stand. This infers a potential risk of bark beetle attack on standing trees. The seasonal activity and reproduction of Pityogenes chalcographus L.
S. Harding, E. B. Lapis, B. Bejer
openaire   +1 more source