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Wpływ zmian klimatu na owady i roztocze związane z roślinami

100%
Boczek J., Pruszyński S.
Zagadnienia Doradztwa Rolniczego
|
2014
|
issue 4(78)
56-66
EN
There is an essential evidence that climate is changing, both globally and locally, and the recent changes, in mean temperature in particular. are greater than the fluctuations normal over the last few centuries. Life-cycle timing in different insects depends on a wide variety of responses to both abiotic and biotic factors. Temperature directly affects development, survival range and abundance of arthropods. Species with a large geographical range are less affected, The main effect of temperature in temperate regions is to influence winter survival, Insect and mite herbivores and their intensity of herbivory increases with rising temperature at constant latitude. Photoperiod is the dominant cue for the seasonal synchrony of host plant and herbivore. A significant variation is observed in an effect of elevated CO2 on arthropods. Atmospheric CO2 concentrations have direct effects on plant primary and secondary metabolism. Insect herbivores show a number of distinct life-history strategies to exploit plants with different growth forms, which will be differentially affected by climate warming.
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Rośliny jako pokarm i środowisko życia owadów i roztoczy

84%
Boczek J., Pruszyński S.
Zagadnienia Doradztwa Rolniczego
|
2012
|
issue 1(67)
51-65
EN
Host plant quality directly affects potential and achieved herbivore fecundity and reproductive strategies. Insect herbivores strongly regulate their nutrient intake including allochemicals. The nitrogenous nutrients are a limiting factor for herbivore survival, growth and fecundity. Herbivore insects usually exhibit enhanced performance and outbreak dynamics on stressed plants do to increased changes in plant physiology. Closely related. coocuring and generalist feeding herbivores eat protein and carbohydrate in different amounts and ratios even if they eat the same plant taxa. Plants in rban landscapes are subject to stress factors (pollutants, automobile exhaust, higher temperature) may reduce the abundance of natural enemies, parasitoids and predators. Many species of insects possess the capacity to learn to guide an active search for food and hosts. Both plants and arthropod herbivores generate select forces that lead to the evolution of plant defence against herbivores and pathogens.
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