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  • Desiccation and egg viability of the ragwort flea beetle, Longitarsus flavicornis (Coleoptera: Chrysomelidae).

    Author(s) : Potter, K. J. B.Ireson, J. E.Allen, G. R.

    Author Affiliation : CSIRO Sustainable Ecosystems and Cooperative Research Centre for Forestry, Private bag 12, Hobart, Tasmania 7001, Australia.

    Author Email : karina.potter@csiro.au

    Journal article : Biocontrol Science and Technology 2010 Vol.20 No.3/4 pp.311-316 ref.14

    Abstract : A study was conducted to investigate the effect of desiccationdesiccationSubject Category: Miscellaneous
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    on the survivalsurvivalSubject Category: Miscellaneous
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    of eggs of Longitarsus flavicornislongitarsus flavicornisSubject Category: Organism Names
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    . EclosioneclosionSubject Category: Miscellaneous
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    of L. flavicornis eggs in laboratory trials decreased with increasing desiccation time between 0 days (93% hatchinghatchingSubject Category: Natural Processes
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    ) and 42 days (no egg hatching) at 50±2% relative humidityrelative humiditySubject Category: Properties
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    and 23±2°C. Probit analysis indicated that 25, 50 and 99% mortalitymortalitySubject Category: Miscellaneous
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    of L. flavicornis eggs occurred after 5.7, 9.3 and 50.4 days desiccation, respectively. Egg development varied between a minimum of 8 days at 7 days desiccation to a maximum of 15 days at 28 days desiccation. Hatching span did not differ between treatments with all eggs hatching within 12 days of each other. A relative humidity of 88-100% was measured under ragwort rosettes in non-drought field conditions. This would be expected to facilitate successful egg eclosion. However, the occurrence of summer drought could be detrimental to egg survival.

    ISSN : 0958-3157

    DOI : 10.1080/09583150903514031

    Record Number : 20103101861

    Publisher : Taylor & Francis

    Location of publication : Abingdon

    Country of publication : UK

    Language of text : English

    Indexing terms for this abstract:

    Organism descriptor(s) : LongitarsuslongitarsusSubject Category: Organism Names
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    , Longitarsus flavicornislongitarsus flavicornisSubject Category: Organism Names
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    Descriptor(s) : biological control agentsbiological control agentsSubject Category: Organism Groups
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    , desiccationdesiccationSubject Category: Miscellaneous
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    , eclosioneclosionSubject Category: Miscellaneous
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    , environmental factorsenvironmental factorsSubject Category: Properties
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    , hatchinghatchingSubject Category: Natural Processes
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    , mortalitymortalitySubject Category: Miscellaneous
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    , natural enemiesnatural enemiesSubject Category: Organism Groups
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    , ovaovaSubject Category: Anatomical and Morphological Structures
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    , relative humidityrelative humiditySubject Category: Properties
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    , survivalsurvivalSubject Category: Miscellaneous
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    Identifier(s) : adult emergence (insects), biocontrol agents, biological control organisms, death rate, egg eclosion, emergence (insects)

    Broader term(s) : ChrysomelidaechrysomelidaeSubject Category: Organism Names
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    , ColeopteracoleopteraSubject Category: Organism Names
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    , 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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    , LongitarsuslongitarsusSubject Category: Organism Names
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