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Applied and Environmental Microbiology, May 2009, p. 3344-3347, Vol. 75, No. 10
0099-2240/09/$08.00+0     doi:10.1128/AEM.02839-08
Copyright © 2009, American Society for Microbiology. All Rights Reserved.

Negative Correlation between Individual-Insect-Level Virulence and Colony-Level Virulence of Paenibacillus larvae, the Etiological Agent of American Foulbrood of Honeybees{triangledown}

Sandra Rauch, Ainura Ashiralieva, Kati Hedtke, and Elke Genersch*

Institute for Bee Research, Friedrich-Engels-Strasse 32, 16540 Hohen Neuendorf, Germany

Received 15 December 2008/ Accepted 12 March 2009

Paenibacillus larvae is the etiological agent of American foulbrood (AFB) in honeybees. Recently, different genotypes of P. larvae (ERIC I to ERIC IV) were defined, and it was shown that these genotypes differ inter alia in their virulence on the larval level. On the colony level, bees mitigate AFB through the hygienic behavior of nurse bees. Therefore, we investigated how the hygienic behavior shapes P. larvae virulence on the colony level. Our results indicate that P. larvae virulence on the larval level and that on the colony level are negatively correlated.

* Corresponding author. Mailing address: Institute for Bee Research, Friedrich-Engels-Str. 32, 16540 Hohen Neuendorf, Germany. Phone: 49 (0)3303-293833. Fax: 49 (0)3303-293840. E-mail: elke.genersch{at}rz.hu-berlin.de

{triangledown} Published ahead of print on 20 March 2009.

Applied and Environmental Microbiology, May 2009, p. 3344-3347, Vol. 75, No. 10
0099-2240/09/$08.00+0     doi:10.1128/AEM.02839-08
Copyright © 2009, American Society for Microbiology. All Rights Reserved.





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