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Title   How climate change will make management of invasive species such as the Harlequin ladybird (Harmonia axyridis) a significant challenge.

Author(s)   Evans, K. A.; Simpson, B.

Author Affiliation   Crop & Soil Systems, SAC, West Mains Road, Edinburgh EH9 3JG, UK.

Journal article   Aspects of Applied Biology 2010 No. 104 pp. 29-35

ISSN   0265-1491

Publisher information   Association of Applied Biologists, Wellesbourne, UK

Language of Text   English

Record Number   20123310305


The Harlequin ladybird (Harmonia axyridis) is a biological control agent 'gone wrong' in that as well as being an effective predator of aphids, it will also feed on native coccinellid species in the UK, and is likely to out compete many native coccinellids, primarily through resource competition and intra-guild predation. It has already invaded the UK and its potential spread under current and future climates is predicted using CLIMEX models based on its response to climatic stress factors such as temperature, rainfall and induction of diapause. By 2050, whether using low or medium emissions climate change scenarios, H. axyridis has the potential to spread throughout most of Europe and the UK. Factors that can affect its establishment are discussed.

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