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Applied and Environmental Microbiology, June 2006, p. 4440-4445, Vol. 72, No. 6
0099-2240/06/$08.00+0     doi:10.1128/AEM.00021-06
Copyright © 2006, American Society for Microbiology. All Rights Reserved.

SHORT REPORT

Depth-Related Gradients of Viral Activity in Lake Pavin

J. Colombet,1 T. Sime-Ngando,1* H. M. Cauchie,2 G. Fonty,1 L. Hoffmann,2 and G. Demeure1

Laboratoire de Biologie des Protistes, Université Blaise Pascal (Clermont-Ferrand II), UMR CNRS 6023, F-63177 Aubière Cedex, France,1 CRP-Gabriel Lippmann, Cellule de Recherche en Environnement et Biotechnologies, 162a Avenue de la Faïencerie, L-1511 Luxembourg, Luxembourg2

Received 4 January 2006/ Accepted 14 March 2006

High-resolution vertical sampling and determination of viral and prokaryotic parameters in a deep volcanic lake shows that in the absence of thermal stratification but within light, oxygen, and chlorophyll gradients, host availability empirically is prevalent over the physical and chemical environments and favors lytic over lysogenic "viral life cycles."

* Corresponding author. Mailing address: Laboratoire de Biologie des Protistes, Université Blaise Pascal (Clermont-Ferrand II), UMR CNRS 6023, F-63177 Aubière Cedex, France. Phone: 33 4 73 40 78 36. Fax: 33 4 73 40 76 70. E-mail: Telesphore.SIME-NGANDO{at}univ-bpclermont.fr.

Applied and Environmental Microbiology, June 2006, p. 4440-4445, Vol. 72, No. 6
0099-2240/06/$08.00+0     doi:10.1128/AEM.00021-06
Copyright © 2006, American Society for Microbiology. All Rights Reserved.





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