Is Pseudoscymnus tsugae the solution to the hemlock woolly adelgid problem?: An early perspective

Mark S. McClure; Carole A. S-J. Cheah; Timothy C. Tigner

Treesearch

Is Pseudoscymnus tsugae the solution to the hemlock woolly adelgid problem?: An early perspective

Informally Refereed

Authors:

Mark S. McClure, Carole A. S-J. Cheah, Timothy C. Tigner

Year:

2000

Type:

General Technical Report

Station:

Northern Research Station

Source:

In: McManus, Katherine A.; Shields, Kathleen S.; Souto, Dennis R., eds. Proceedings: Symposium on sustainable management of hemlock ecosystems in eastern North America. Gen. Tech. Rep. NE-267. Newtown Square, PA: U.S. Department of Agriculture, Forest Service, Northeastern Forest Experiment Station. 89-96.

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Abstract

Hemlock woolly adelgid, Adelges tsugae Annand (Homoptera: Adelgidae) is native to Japan where it is an innocuous inhabitant of Tsuga diversifolia Masters and T. sieboldii Carriere. Native populations of this insect are regulated by host resistance and natural enemies. However, introduced populations in eastern North America attain damaging levels on T. canadensis (L.) Carriere and T. caroliniana Engelmann and are regulated mainly by weather and negative density-dependent feedback mechanisms related to host deterioration.

Parent Publication

Proceedings: symposium on sustainable management of hemlock ecosystems in eastern North America

Citation

McClure, Mark S.; Cheah, Carole A. S-J.; Tigner, Timothy C. 2000. Is Pseudoscymnus tsugae the solution to the hemlock woolly adelgid problem?: An early perspective. In: McManus, Katherine A.; Shields, Kathleen S.; Souto, Dennis R., eds. Proceedings: Symposium on sustainable management of hemlock ecosystems in eastern North America. Gen. Tech. Rep. NE-267. Newtown Square, PA: U.S. Department of Agriculture, Forest Service, Northeastern Forest Experiment Station. 89-96.