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Forestry Advance Access originally published online on September 7, 2007
Forestry 2007 80(4):471-479; doi:10.1093/forestry/cpm029
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© Institute of Chartered Foresters, 2007. All rights reserved. For Permissions, please email: journals.permissions@oxfordjournals.org

The threat of the ambrosia beetle Megaplatypus mutatus (Chapuis) (=Platypus mutatus Chapuis) to world poplar resources

René I. Alfaro1,*, Leland M. Humble1, Paola Gonzalez2, Raul Villaverde3 and Gianni Allegro4

1 Natural Resources Canada, Pacific Forestry Centre, 506 West Burnside Road, Victoria, BC, Canada
2 Centro de Investigaciones de Plagas e Insecticidas (CITEFA-CONICET) J- B. De LaSalle 4397 (B1603ALO), Buenos Aires, Argentina
3 Faculty of Agriculture and Forestry, University of La Plata, Argentina
4 Istituto di Sperimentazione per la Pioppicoltura Casale Monferrato, Italy

* Corresponding author. E-mail: ralfaro{at}pfc.forestry.ca


  Abstract

We describe the life cycle of Megaplatypus mutatus (Chapuis) (=Platypus mutatus) and the damage it causes to poplar resources in Argentina. This insect, native to the subtropical and tropical areas of South America, has extended its range into temperate regions, reaching as far south as Neuquén in Argentinean Patagonia. The damage is caused by the adult insects, which bore large gallery systems into living poplars (Populus spp.), willows (Salix spp.) and many other broadleaf species, including important fruit trees species such as apples (Malus spp.), walnuts (Juglans spp.) and avocados (Persea spp.). The galleries degrade the lumber and weaken the tree stems, which often then break during windstorms. A recent introduction of M. mutatus to Italy demonstrates that this insect can be transported long distances between countries, and therefore presents a threat worldwide—particularly to poplar cultivation. We review the taxonomic nomenclature for this pest, provide a summary of the life cycle, hosts and damage and summarize actions taken to reduce the risk of introduction of M. mutatus to Canada.


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