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    Introduced Dung Beetles in Australia: A Pocket Field Guide
    Introduced Dung Beetles in Australia: A Pocket Field Guide
    Introduced Dung Beetles in Australia: A Pocket Field Guide
    Ebook90 pages27 minutes

    Introduced Dung Beetles in Australia: A Pocket Field Guide

    By Penny Edwards, Pam Wilson and Jane Wright

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    About this ebook

    This field guide to introduced dung beetles covers all species found in Australia, including two newly introduced species. It will enable farmers, Landcare workers and the interested public to identify and learn about the basic biology of these beetles found in cattle dung.

    LanguageEnglish
    PublisherCSIRO PUBLISHING
    Release dateOct 19, 2015
    ISBN9781486300716
    Introduced Dung Beetles in Australia: A Pocket Field Guide

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      Book preview

      Introduced Dung Beetles in Australia - Penny Edwards

      Introduction

      Introduction

      Why were foreign dung beetles brought to Australia?

      In the cattle producing areas of Australia, unburied cattle dung fouls pastures, locks up nutrients and serves as a breeding ground for important fly pests, such as the bush fly and, in the north, the buffalo fly. Native dung beetles, adapted to feeding on the dry fibrous pellets of marsupials, have had little impact on the dispersal of cattle dung, either in the semi-natural pastures of tropical and subtropical northern Australia or in the more intensive systems of temperate southern parts. This problem was recognised by CSIRO entomologist Dr George Bornemissza, who proposed that foreign dung beetles be imported into Australia to bury cattle dung and hence minimise the twin problems of pasture fouling and fly breeding.

      In 1966 a pilot project began to import foreign dung beetles into northern Australia to assess prospects for the biological control of dung in tropical pastures. Once the new beetles became abundant, the associated high degree of dung burial attracted much interest among cattlemen and led to the establishment of the CSIRO Dung Beetle Project, the aim of which was to import beetles for all different climatic areas of Australia.

      Between 1968 and 1992 CSIRO imported and released 43 species from Africa, Europe and Asia, of which 23 have established (Edwards 2009). Many species have spread widely and have probably reached their maximum potential distribution. However, a few are only spreading slowly, and would benefit from further redistribution.

      All cattle producing areas of Australia support at least one introduced species of dung beetle, but in the high density cattle areas of Qld and NSW seven or more species may be present.

      Dung beetle habits

      Dung beetles are mostly found in fresh dung, which is the sole food of both adults and larvae. Typically, new adults emerge from the soil at the start of their activity season and fly off seeking fresh dung, in which they feed for a few days. They may visit a succession of dung pads until they are ready to breed. They pair off and commence breeding in fresh dung. Usually a male and female work together to dig tunnels and make a ‘nest’ under the dung pad. Dung is removed from the pad and buried in the soil as balls or brood masses, depending on the species. Eggs are laid in this dung. Beetle larvae hatch from the eggs and feed to maturity on the stored dung, finally emerging from the soil as new adults. The generation

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