sp. nov., isolated from shrimp () pond water.

A novel strain (CAIM 722=SW9=DSM 24596) was isolated in 2003 from water of a shrimp () culture pond located in Los Mochis, Sinaloa, Mexico, and taxonomically characterized using a polyphasic approach. The 16S rRNA gene sequence clustered within those of the genus , showing high similarity to the type strains of the Porteresiae clade. Multilocus sequence analysis using eight housekeeping genes (, , , , , , , and 16S rRNA) and phylogenetic analysis with 139 single-copy genes showed that the strain forms an independent branch.

Photobacterium lucens sp. nov., Isolated from a Cultured Shrimp Penaeus vannamei.

Two bacterial strains were isolated from the hepatopancreas of a cultured shrimp (Penaeus vannamei) in Sinaloa, México. Their partial 16S rRNA gene sequences clustered within those of the genus Photobacterium, showing high similarity to the type strains of Photobacterium angustum and Photobacterium leiognathi, were 87.1% and 97.