Physiology of cold tolerance in the bark beetle, Pityogenes chalcographus and its overwintering in spruce stands

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60076658%3A12310%2F14%3A43887394" target="_blank" >RIV/60076658:12310/14:43887394 - isvavai.cz</a>
Result on the web
<a href="http://www.sciencedirect.com/science/article/pii/S0022191014000250" target="_blank" >http://www.sciencedirect.com/science/article/pii/S0022191014000250</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.jinsphys.2014.02.007" target="_blank" >10.1016/j.jinsphys.2014.02.007</a>

Result language
angličtina
Original language name
Physiology of cold tolerance in the bark beetle, Pityogenes chalcographus and its overwintering in spruce stands
Original language description
The seasonal development of physiological features underlying gradual acquisition of relatively high cold tolerance in overwintering adults of the bark beetles, Pityogenes chalcographus was described. Prior to overwintering, the beetles accumulated carbohydrate reserves in the form of glycogen and trehalose. These reserves were partially converted to glycerol during peaking winter so that glycerol concentration reached 1.4 M in average, which corresponds to approximately one quarter of the beetle dry mass. Whole body supercooling points decreased from -12.8 degrees C in average at the beginning of dormancy (August) to -26.3 degrees C in average during peaking winter (January). More than 75% of January-collected beetles survived at -5 degrees C for 30 days, at -15 degrees C for 60 days and more than 40% of them survived at -26 degrees C for 12 h. High resistance against inoculation of body fluids with external ice crystals, and low mortality, was observed when January-collected beetles
Czech name
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Czech description
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Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
ED - Physiology
OECD FORD branch
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Publication year
2014
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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