NDLI: Harmonia axyridis in Great Britain: analysis of the spread and distribution of a non-native coccinellid

Content Provider	Springer Nature Link
Author	Brown, Peter Michael James Roy, Helen E. Rothery, Peter Roy, David B. Ware, Remy L. Majerus, Michael E. N.
Copyright Year	2007
Abstract	Harmonia axyridis (Pallas) (Coleoptera: Coccinellidae) is native to Asia, and was widely introduced as a biocontrol agent of aphids and coccids in Europe and North America. In Europe H. axyridis is considered to be an invasive alien species. Although not known to have been deliberately introduced to Great Britain, it was first recorded there in 2004, in south-east England. Harmonia axyridis arrived in Great Britain by various means, primarily from mainland Europe, but also from Canada. Extensive national and local media coverage, and a dedicated website (http://www.harlequin-survey.org), facilitated public involvement in recording H. axyridis in Great Britain; in excess of 4,000 verified records of the species were received between 2004 and 2006. Through detailed mapping, the objective of our study was to quantify and analyse the spread of H. axyridis in its early stages of invasion in Great Britain. Our data shows that between 2004 and 2006, the species spread north through Great Britain at the rate of 58 km year-1 and west at the rate of 144.5 km year-1. In England H. axyridis spread north to Yorkshire and west to Cornwall by the end of 2006, and also reached Wales. Recorded occurrence (of one or more H. axyridis individuals at larval, pupal and/or adult stage) in 10 km squares in Great Britain was: 2004—51; 2005—149; 2006—447. Records of juvenile H. axyridis extend through most of the recorded British range of the species, and we present evidence of bi-voltinism in the population in 2006.
Starting Page	55
Ending Page	67
Page Count	13
File Format	PDF
ISSN	13866141
Journal	BioControl
Volume Number	53
Issue Number	1
e-ISSN	15738248
Language	English
Publisher	Springer Netherlands
Publisher Date	2007-11-07
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Alien species Biological control Coccinellidae Harlequin ladybird Harmonia axyridis Invasive species Non-native species Entomology Plant Pathology Agriculture Animal Ecology Animal Biochemistry Behavioural Sciences
Content Type	Text
Resource Type	Article
Subject	Insect Science Agronomy and Crop Science

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