Bioclimatic analyses of distributions of a parasitoid Peristenus digoneutis and its host species Lygus spp. in Europe and North America. (13th September 2012)

• Record Type: Journal Article
• Authors: Haye, Tim; Olfert, Owen; Weiss, Ross M.; Gariepy, Tara D.; Broadbent, Bruce; Kuhlmann, Ulrich
• Is Part Of: Agricultural and forest entomology. Volume 15:Number 1(2013:Feb.)
• Page Start: 43
• Page End: 55
• Publication Date: 2012-09-13
• Subjects: Insect pests -- Control -- Periodicals; Agricultural pests -- Control -- Periodicals; Forest insects -- Control -- Periodicals; 632.7
• DOI: 10.1111/j.1461-9563.2012.00590.x
• Languages: English
• ISSNs: 1461-9555

Abstract

<abstract abstract-type="main" xml:lang="en"> <title> <x xml:space="preserve">Abstract</x> </title> <p> <list id="l1" list-type="simple"> <list-item> <label>1</label> <p> <italic>Peristenus digoneutis</italic> Loan is a parasitoid of <italic>Lygus</italic> plant bugs, which was successfully introduced from Europe into North America in the 1980s for controlling native <italic>Lygus</italic> populations. Surveys confirmed that <italic>P. digoneutis</italic> populations have become established throughout eastern North America and that the spread of the parasitoid continues. For unknown reasons, previous releases of <italic>P. digoneutis</italic> in Western Canada were not successful.</p> </list-item> <list-item> <label>2</label> <p>A bioclimate (<sc>climex</sc>®; Hearne Scientific Software Pty Ltd, Australia) model for <italic>P. digoneutis</italic> in North America was developed, based on climate and ecological parameters, and then validated with actual distribution records. The current distribution of <italic>P. digoneutis</italic> in eastern North America was consistent with the predicted distribution. The model suggests that <italic>P. digoneutis</italic> will probably continue its spread westwards throughout the U.S.A. along the Great Lakes.</p> </list-item> <list-item> <label>3</label> <p>The southern distribution of <italic>P. digoneutis</italic> is expected to be limited by hot summer temperatures, whereas its northern range is limited by the number of <italic>Lygus</italic> host generations rather than cold stress.</p> </list-item> <list-item> <label>4</label> <p> <italic>Peristenus digoneutis</italic> has the potential to occur in the southern parts of the prairie ecozone of western Canada; however, Ecoclimatic Index values in the prairies indicate mainly marginal or unfavourable conditions, which may explain why earlier releases of <italic>P. digoneutis</italic> in Western Canada failed.</p> </list-item> </list> </p> </abstract>