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1 April 2002 Behavioral Activity of Catnip (Lamiaceae) Essential Oil Components to the German Cockroach (Blattodea: Blattellidae)
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Abstract

The essential oil of catnip, Nepeta cataria L., contains two isomers of nepetalactone, E,Z- and Z,E-nepetalactone, and was tested for repellent activity to adult male German cockroaches, Blattella germanica (L.), in a choice-test arena. The two isomers of nepetalactone were purified by using preparative thin-layer chromatography and tested for behavioral activity in the choice-test arena. Significant differences due to concentration were detected by analysis of variance, and the responses were compared by least-squared means analysis. The activities of the essential oil and purified isomers were compared with N,N-diethyl-3-methylbenzamide (DEET) by a paired t-test. E,Z-Nepetalactone was the most active of the compounds tested, being significantly more active to this species than equivalent doses of DEET, the essential oil, or Z,E-nepetalactone. Antennectomized insects showed no response to concentrations that were active against intact insects.

Chris J. Peterson, Leah T. Nemetz, Leah M. Jones, and Joel R. Coats "Behavioral Activity of Catnip (Lamiaceae) Essential Oil Components to the German Cockroach (Blattodea: Blattellidae)," Journal of Economic Entomology 95(2), 377-380, (1 April 2002). https://doi.org/10.1603/0022-0493-95.2.377
Received: 19 March 2001; Accepted: 1 August 2001; Published: 1 April 2002
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