12th Central European Workshop on Soil Zoology, Abstract book
Tajovský, Karel
2013 - English Keywords: Central Europe; soil zoology; abstracts Available at various institutes of the ASCR 12th Central European Workshop on Soil Zoology, Abstract book

Tajovský, Karel
Biologické centrum, 2013

The food preferences of asian lady beetle Harmonia axyridis
Šenkeříková, P.; Nedvěd, Oldřich
2012 - English Survey of food preferences of Asian ladybird Harmonia axyridis included two-choice and no-choice tests. Wingless females of aphids Acyrthosiphon pisum, Aphis fabae cirsiiacanthoidis and Aphis sambuci were offered to twenty-four hours starving ladybirds. No-choice tests we conducted only with adults. We gave them 20 individuals of one aphid species and we found that ladybirds fed most number of A. pisum. In two-choice test, we combined pairs of studied species: A. f cirsiiacanthoidis x A. pisum, A. pisum x A. sambuci, A. sambuci x A. f cirsiiacanthoidis. We put 10 aphids of each of the two species combined into a plastic Petri dish and then we introduced one ladybird adult or larva. We made 20 replicates with adults. We found that there was statistical difference only in the combination A. sambuci vs. A. f cirsiiacanthoidis, where males consumed more individuals of the toxic aphid A. sambuci. For this combination, we then made 20 replicates with larvae who preyed in contrast with males more of the suitable food A. f cirsiiacanthoidis than toxic A. sambuci. We also studied the influence of contrasting background on food choice in adults. We used both tests and all combinations. We found that females did not prefer any aphid species, except for the black A. f cirsiiacanthoidis being consumed more often than the green A. pisum on black background. Because they consumed much more A. pisum in no-choice experiment on both backgrounds, the difference in choice experiment is very strong and its polarity surprising. Keywords: ladybird; Coccinellidae; Harmonia axyridis Available at various institutes of the ASCR The food preferences of asian lady beetle Harmonia axyridis

Survey of food preferences of Asian ladybird Harmonia axyridis included two-choice and no-choice tests. Wingless females of aphids Acyrthosiphon pisum, Aphis fabae cirsiiacanthoidis and Aphis sambuci ...

Šenkeříková, P.; Nedvěd, Oldřich
Biologické centrum, 2012

Report on acoustic fish stock assessment of Neusiedlersee, August 2010
Draštík, Vladislav; Kubečka, Jan
2011 - English Keywords: hydroacoustic monitoring survey; split beam echosounder; fish abundance Available at various institutes of the ASCR Report on acoustic fish stock assessment of Neusiedlersee, August 2010

Draštík, Vladislav; Kubečka, Jan
Biologické centrum, 2011

Role of adipokinetic peptides in control of insect anti-stress reactions
Kodrík, Dalibor
2011 - English Adipokinetic hormones (AKHs) control predominantly insect metabolism, but are involved also in a number of other activities. Recently, it was proven that AKHs participated also in the activation of antioxidant protection mechanisms: they increased a level of reduced glutathione and additionally, modulated the activity of catalase that reduces hydrogen peroxide to water and oxygen. It has also been found that AKHs participated on antistress reaction elicited by insecticides and increased the lethal effect of the insecticides alone. The results show that AKHs provide an initiation of the complex antistress response that involves both biochemical and physiological protective mechanisms. Keywords: Insect; adipokinetic hormone; stress Available at various institutes of the ASCR Role of adipokinetic peptides in control of insect anti-stress reactions

Adipokinetic hormones (AKHs) control predominantly insect metabolism, but are involved also in a number of other activities. Recently, it was proven that AKHs participated also in the activation of ...

Kodrík, Dalibor
Biologické centrum, 2011

Program and Abstracts. Third Meeting of IOBC Working Group. Integrated Control of Plant-Feeding Mites
Zemek, Rostislav; Palevsky, E.
2011 - English Keywords: IOBC working group Available at various institutes of the ASCR Program and Abstracts. Third Meeting of IOBC Working Group. Integrated Control of Plant-Feeding Mites

Zemek, Rostislav; Palevsky, E.
Biologické centrum, 2011

Ecology of Soil Microorganisms 2011. Microbes as Important Drivers of Soil Processes, Abstract book
Chroňáková, Alica; Šimek, Miloslav; Kyselková, Martina; Hynšt, Jaroslav; Baldrian, Petr; Pospíšek, M.; Krištůfek, Václav; Elhottová, Dana
2011 - English Keywords: ecology; soil microorganisms; soil processes Available at various institutes of the ASCR Ecology of Soil Microorganisms 2011. Microbes as Important Drivers of Soil Processes, Abstract book

Chroňáková, Alica; Šimek, Miloslav; Kyselková, Martina; Hynšt, Jaroslav; Baldrian, Petr; Pospíšek, M.; Krištůfek, Václav; Elhottová, Dana
Biologické centrum, 2011

A myth about the „potent cardiostimulating“ action of insect neuropeptides has been unfounded
Sláma, Karel
2011 - English Chemists and biochemists isolating or synthesizing insect neuropeptides used to create a myth about “potent cardiostimulating” properties of these peptides. The myth was motivated by a tendency to gain professional importance and scientific merit of their work. Crucial arguments in favour of the idea were obtained by simple, largely nonspecific, in vitro bioassays performed on isolated hearts of cockroaches in saline. These assays gave positive responses to a wide range of low molecular compounds as well as to most peptides tested. Our attempts to solve this problem started by development of new touch-free electrocardiographic methods for monitoring the heartbeat of unrestrained insects. Extensive in vivo recordings revealed that the tentatively “cardioactive” neuropeptides had no cardiostimulating activity under physiological conditions. Intimate similarities appeared between regulation of insect and human hearts. Accordingly, a cardioactive peptide does not exist in human medicine as well. Specific electrocardiographic methods were invented for testing new cardioactive pharmacological preparations on easily available insect material. Keywords: cardioactive neuropeptides; myogenic heartbeat; insect electrocardiography Available at various institutes of the ASCR A myth about the „potent cardiostimulating“ action of insect neuropeptides has been unfounded

Chemists and biochemists isolating or synthesizing insect neuropeptides used to create a myth about “potent cardiostimulating” properties of these peptides. The myth was motivated by a tendency to ...

Sláma, Karel
Biologické centrum, 2011

11.sup.th./sup. Central European Workshop on Soil Zoology, Abstract book
Tajovský, Karel
2011 - English Keywords: Central Europe; soil zoology; abstracts Available at various institutes of the ASCR 11.sup.th./sup. Central European Workshop on Soil Zoology, Abstract book

Tajovský, Karel
Biologické centrum, 2011

Book of Abstracts FSAM 2010
Kubečka, Jan; Soukalová, Kateřina; Hohausová, Eva
2010 - English Keywords: fish stock assessment; ecological quality; reservoirs Available at various institutes of the ASCR Book of Abstracts FSAM 2010

Kubečka, Jan; Soukalová, Kateřina; Hohausová, Eva
Biologické centrum, 2010

Fish stock assessment of the Ebro Reservoir in 2009
Kratochvíl, Michal; Prchalová, Marie; Kubečka, Jan; Jůza, Tomáš
2010 - English Keywords: fish community composition; fish distribution; gillnetting; trawling Available at various institutes of the ASCR Fish stock assessment of the Ebro Reservoir in 2009

Kratochvíl, Michal; Prchalová, Marie; Kubečka, Jan; Jůza, Tomáš
Biologické centrum, 2010