Mycoplasma sphenisci
(Frasca et al., 2005)
Etymology
Gr. n. mukes – fungus, Gr. neut. n. plasma – anything formed, N.L. neut. n. Mycoplasma – fungus form; N.L. n. Spheniscus – a genus of penguins, N.L. gen. n. sphenisci – of Spheniscus
Taxonomy
Mycoplasmatales – Mycoplasmataceae – Mycoplasma – Mycoplasma sphenisci (close to the Bovis cluster), effectively but not validly published, related to Mycoplasma lipophilum (16S rRNA gene sequence similarity – 94.84%) (Fig. 1)
Type strain
UCMJT (jackass penguin – Spheniscus demersus, USA, ≤2005), (Fig. 2, 16S rRNA gene sequence)
Genomes
no genome published (per 11/05/2024)
Cell morphology
spherical – coccoid – flask-shaped
Colony morphology
fried egg morphology
Metabolism
hydrolysis of arginine; non-fermentative, non-urea-hydrolyzing
Host
jackass penguin (Spheniscus demersus)
Habitat
upper respiratory tract
Disease(s)
unknown, isolated once from mucocaseous choanal discharge of a jackass penguin
Pathogenicity
factors unknown
Epidemiology
unknown, once isolated from an aquarium-kept jackass penguin
Diagnosis
cultivation and genetic species identification
Fig. 1. Maximum likelihood tree showing the phylogenetic position of Mycoplasma sphenisci UCMJT close to the Bovis cluster of Mycoplasmataceae based on 16S rRNA gene sequences. The sequence of Mycoplasma synoviae WVU 1853T was used as out-group (Synoviae cluster). Numbers at nodes represent bootstrap confidence values (1000 replications). Only values > 80% are shown. Bar, number of substitutions per nucleotide position. Credits: Joachim Spergser (Vetmeduni Vienna)