Coenonia anatina gen. nov., sp. nov., a novel bacterium associated with respiratory disease in ducks and geese

Taxon 1502 was originally described as a Riemerella anatipestifer-like bact erium causing exudative septicaemia in ducks and geese. In the present stud y, an integrated genotypic and phenotypic approach was used to elucidate th e phylogenetic affiliation and taxonomic relationships of 12 strains of tax on 1502. Whole-cell protein and fatty acid analyses and an extensive bioche mical examination by using conventional tests and several API microtest sys tems indicated that all isolates formed a homogeneous taxon, which was conf irmed by DNA-DNA hybridizations, 16S rDNA sequence analysis of a representa tive strain (LMC 14382(T)) indicated that this taxon belongs to the Cytopha ga-Flavobacterium-Bacteroides phylum and revealed a moderate but distinct r elationship to species of the genus Capnocytophaga (overall 16S rDNA sequen ce identities were 88.8-90.2 %). Taxon 1502 is concluded to represent a sin gle species that should be allocated to a novel genus, and the name Coenoni a anatina gen. nov., sp, nov. is proposed. The DNA G+C content of represent ative strains was 35-36 mol% and the type strain is LMG 14382(T).