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Appl. Environ. Microbiol. doi:10.1128/AEM.02798-07
Copyright (c) 2008, American Society for Microbiology and/or the Listed Authors/Institutions. All Rights Reserved.

Evolutionary relationships of Endobugula bacterial symbionts and their Bugula bryozoan hosts

Scripps Institution of Oceanography, Marine Biology Research Division, University of California, San Diego, La Jolla, California 92093-0202; Department of Environmental and Biomolecular Systems, OGI School of Science & Engineering, Oregon Health & Science University, Beaverton, Oregon 97006-8921, and Department of Biology, Randolph-Macon College, Ashland, Virginia 23005

	Abstract

Ribosomal gene sequences were obtained from bryozoans in the genus Bugula and their bacterial symbionts; analyses of host and symbiont phylogenetic trees did not support a history of strict cospeciation. Symbiont-derived compounds known to defend host larvae from predation were only detected in two out of four symbiotic Bugula species.