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  • Gas exchange pattern in the two-spot ladybird beetle, Adalia bipunctata, differs in dry vs. moist air.

    Author(s) : Jõgar, K.Kuusik, A.Metspalu, L.Ploomi, A.Williams, I. H.Hiiesaar, K.Luik, A.Sibul, I.Mänd, M.

    Author Affiliation : Institute of Agricultural and Environmental Sciences, Department of Plant Protection, Estonian University of Life Sciences, Tartu, Estonia.

    Author Email : katrin.jogar@emu.ee

    Journal article : Entomologia Experimentalis et Applicata 2016 Vol.160 No.2 pp.156-163 ref.many

    Abstract : Gas exchangegas exchangeSubject Category: Miscellaneous
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    patterns in the ladybird beetle, Adalia bipunctataadalia bipunctataSubject Category: Organism Names
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    (L.) (ColeopteracoleopteraSubject Category: Organism Names
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    : CoccinellidaecoccinellidaeSubject Category: Organism Names
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    coccinellidaeSubject Category: Organism Names
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    ), were investigated using an infrared gaseous analyser (IRGA) and a coulometric O2 respirometer (manometric-volumetric system). Before testing, the beetles were kept either in dry (dehydrated) or moist (hydrated) conditions for 1 day. Their subsequent gas exchange patterns did not depend on their state of humidityhumiditySubject Category: Properties
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    but rather were controlled by the humidity of the insect chamber during gas exchange measurementmeasurementSubject Category: Techniques, Methodologies and Equipment
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    . If this chamber contained dry air, the beetles exhibited CO2 release by burst, which we interpreted as cyclic gas exchange (CGE) with inter-burst periods, but if the chamber was switched to contain moist air, then cyclic CO2 release was soon abandoned and a pattern of continuous gas exchange appeared. Measurements with the coulometric respirometer in moist air showed that continuous gas exchange was often associated with weak abdominal pulsations, which we interpreted as active ventilationventilationSubject Category: Techniques, Methodologies and Equipment
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    . Their metabolic rate was lower during gas exchange cycles than during continuous gas exchange. We revealed that in the ladybird beetle metabolic rate increased in moist air when the gas exchange pattern transitioned from cyclic to continuous.

    ISSN : 0013-8703

    DOI : 10.1111/eea.12471

    Record Number : 20163307589

    Publisher : Wiley-Blackwell

    Location of publication : Oxford

    Country of publication : UK

    Language of text : English

    Indexing terms for this abstract:

    Organism descriptor(s) : AdaliaadaliaSubject Category: Organism Names
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    , Adalia bipunctataadalia bipunctataSubject Category: Organism Names
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    , CoccinellidaecoccinellidaeSubject Category: Organism Names
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    , ColeopteracoleopteraSubject Category: Organism Names
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    Descriptor(s) : diapausediapauseSubject Category: Miscellaneous
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    , gas exchangegas exchangeSubject Category: Miscellaneous
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    , humidityhumiditySubject Category: Properties
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    , measurementmeasurementSubject Category: Techniques, Methodologies and Equipment
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    , survivalsurvivalSubject Category: Miscellaneous
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    , ventilationventilationSubject Category: Techniques, Methodologies and Equipment
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    Identifier(s) : ladybirds, ladybugsladybugsSubject Category: Organism Names
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    , metrology

    Broader term(s) : insectsinsectsSubject Category: Organism Names
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    , HexapodahexapodaSubject Category: Organism Names
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    , arthropodsarthropodsSubject Category: Organism Names
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    , invertebratesinvertebratesSubject Category: Organism Names
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    , animalsanimalsSubject Category: Organism Names
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    , eukaryoteseukaryotesSubject Category: Organism Names
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    , ColeopteracoleopteraSubject Category: Organism Names
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    , CoccinellidaecoccinellidaeSubject Category: Organism Names
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    , AdaliaadaliaSubject Category: Organism Names
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