Two tributyrin hydrolysis negative Moraxella isolates, from cases of keratoconjuncitivits in Camelus dromedarius (Canary Islands), showed highest 16S rRNA gene sequence similarity to Moraxella canis. DNA relatedness of 79% to the M. canis type strain confirmed the identity of the isolates as a tributyrin hydrolysis negative biovar of M. canis.
Tejedor-Junco, M. T., Gutiérrez, C., González, M., Fernández, A., Wauters, G., De Baere, T., Deschaght, P., & Vaneechoutte, M. (2009). Outbreaks of keratoconjunctivitis in a camel herd caused by a specific biovar of Moraxella canis. Journal of Clinical Microbiology, 48(2), 596-598. https://doi.org/10.1128/JCM.02329-09 (Original work published 2010)