Canadian Forest Service Publications

Introduction, establishment, and impact of Lathrolestes thomsoni (Hymenoptera: Ichneumonidae) for biological control of the ambermarked birch leafminer, Profenusa thomsoni (Hymenoptera: Tenthredinidae), in Alaska. 2015. Soper, A.L., MacQuarrie, C.J.K., Van Driesche, R. Biological Control 83: 13-19.

Year: 2015

Issued by: Great Lakes Forestry Centre

Catalog ID: 35930

Language: English

Availability: PDF (request by e-mail)

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Plain Language Summary

This paper documents the successful release and establishment of a biological control agent in urban and rural forests in the state of Alaska, USA, to control the ambermarked birch leafminer, a significant pest of birch trees in the state. The biological control agent was collected from large populations in Alberta and the Northwest Territories, shipped to Alaska and released beginning in the summer of 2004. In 2011 the release was determined to be successful when reproducing populations were found, and later work would document the spread of the insect within the city of Anchorage. This paper shows how the biological control agent may be impacting the populations. The same wasp controlled populations of the ambermarked birch leafminer in Edmonton, Alberta in the 1990s, and the hope is that the same level of control will be observed in Alaska. This was the product of a joint research project carried out by the Canadian Forest Service, The United States Forest Service, The universities of Alberta and Massachusetts (Amherst) and the state of Alaska, with the aid and support of various other agencies in both Canada and the United States.