Comparative impact of Scymnus ningshanensis and Pseudoscymnus tsugae (Coleoptera: Coccinellidae) on the hemlock woolly adelgid

Elizabeth Butin; Joseph Elkinton; Nathan P. P. Havill; Michael Montgomery

Treesearch

Comparative impact of Scymnus ningshanensis and Pseudoscymnus tsugae (Coleoptera: Coccinellidae) on the hemlock woolly adelgid

Informally Refereed

Authors:

Elizabeth Butin, Joseph Elkinton, Nathan P. P. Havill, Michael Montgomery

Year:

2003

Type:

General Technical Report

Station:

Northern Research Station

Source:

In: Fosbroke, Sandra L.C.; Gottschalk, Kurt W., eds. Proceedings, U.S. Department of Agriculture interagency research forum on gypsy moth and other invasive species 2002; 2002 January 15-18; Annapolis, MD. Gen. Tech. Rep. NE-300. Newtown Square, PA: U.S. Department of Agriculture, Forest Service, Northeastern Research Station: 14.

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Abstract

The hemlock woolly adelgid (Adelges tsugae Annand) is an introduced pest thought to be native to Asia. Damage to eastern hemlock and Carolina hemlock can be serious (Salom et al. 1996), but western and Asian hemlocks are seldom damaged. Potential biological control agents have been observed in Japan and China (Sasaji and McClure 1997, Yu et al. 2000). We compared two of these which have been previously imported, Scymnus ningshanensis Yu et Yao, a coccinellid from China (Yu et al. 2000) and Pseudoscymnus tsugae Sasaji & McClure a coccinellid from Japan (Sasaji and McClure 1997).

Parent Publication

Economies of Scale and Forest Management in Mississippi

Citation

Butin, Elizabeth; Elkinton, Joseph; Havill, Nathan; Montgomery, Michael. 2003. Comparative impact of Scymnus ningshanensis and Pseudoscymnus tsugae (Coleoptera: Coccinellidae) on the hemlock woolly adelgid. In: Fosbroke, Sandra L.C.; Gottschalk, Kurt W., eds. Proceedings, U.S. Department of Agriculture interagency research forum on gypsy moth and other invasive species 2002; 2002 January 15-18; Annapolis, MD. Gen. Tech. Rep. NE-300. Newtown Square, PA: U.S. Department of Agriculture, Forest Service, Northeastern Research Station: 14.