Results 151 to 160 of about 940 (177)

Isoenzymanalyse verschiedener Populationen von Pityogenes chalcographus L. (Coleoptera, Scolytidae)¹

Journal of Applied Entomology, 1986
AbstractMethods for analysing isoenzymes of different populations in Pityogenes chalcographus L. (Coleoptera, Scolytidae). I. Adaption of methods, enzyme polymorphismMethods for the distinct separation of the isozymes of Peroxidase, Glutamate‐Oxaloacetate‐Transaminase, Esterase, Acid Phosphatase, Amylase and Leucin‐Aminopeptidase of the bark beetle ...
O. Ritzengruber, E. Führer
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Zum Einfluß von Photoperiode und Temperatur auf die Entwicklung des Kupferstechers, Pityogenes chalcographus L. (Col., Scolytidae)

Forstwissenschaftliches Centralblatt, 1979
Durch Laborexperimente wurde festgestellt, das Jungkafer vonPityogenes chalcographus nach Abschlus ihrer Entwicklung in den Brutsystemen inaktiv bleiben, wenn sie sich bei 20° und Kurztagbedingungen entwickelt haben. Waren die Bruten bei 20° Langtagbedingungen ausgesetzt, so verlast nur ein Teil der Jungkafer die Brutstatten.
E. Führer, Ze Yu Chen
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Studien über intraspezifische Inkompatibilität bei Pityogenes chalcographus L. (Col., Scolytidae)¹

Zeitschrift für Angewandte Entomologie, 1977
AbstractStudies on intraspecific incompatibility in Pityogenes chalcographus L. (Col., Scolytidae)Fertility of 13 North and Central European strains of Pityogenes chalcographus was comparatively studied in the laboratory and crossing experiments between some of these strains were performed.
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Evidence for low‐titre infections in insect symbiosis: Wolbachia in the bark beetle Pityogenes chalcographus (Coleoptera, Scolytinae)

Environmental Microbiology, 2009
Summary Wolbachia are obligatory endosymbiotic α‐proteobacteria found in many insect species. They are maternally transmitted and often exhibit reproductive phenotypes like cytoplasmic incompatibility.
Arthofer, W, Riegler, M, Avtzis, DN, Stauffer, C   +3 more
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Особенности биологии гравера обыкновенного (Pityogenes Chalcographus L.) в Центральной части Беларуси

2022
В статье рассмотрены сроки и характер лёта Pityogenes chalcographiis L. в течение вегетационного периода в еловых насаждениях центральной части Беларуси. Приведены данные о встречаемости этого вида в пределах фенологических групп. Приведены сведения о фазах зимовки вредителя. Показана возможность реализации двух генераций Pityogenes chalcographus L.
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Felling date affects the occurrence of Pityogenes chalcographus on Scots pine logging residues

Agricultural and Forest Entomology, 2012
Logging residues form a substantial portion of the dead wood in managed forests, and logging residues can facilitate bark beetle multiplication and outbreaks. For these reasons, it is highly advisable to find a way of reducing the risk of bark beetle outbreaks without extensive ...
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Rassendifferenzierung bei Pityogenes chalcographus L. (Col., Scolytidae)

Forstwissenschaftliches Centralblatt, 1980
E. Führer, E. -L. Klipstein
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Trappings of Pityogenes chalcographus L., with CME 519-74 and Chalcoprax

1989
A summary of projects conducted by the Cemagref on the Pityogenes chalcographus' pheromonal complex is presented with emphasis on the commercial mixture, chalcoprax, as mass attractant. This insect tends to destroy young spruce populations. As with the Phéroprax used for the typographus, this artificial pheromone can be used to monitor the relative ...
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Spermapolyploidie durch interpopulare Bastardierung bei Pityogenes chalcographus

Naturwissenschaften, 1980
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Ein Beitrag zur Fortpflanzungsbiologie des Borkenkäfers Pityogenes chalcographus L

Zeitschrift für Angewandte Entomologie, 2009
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