Abstract
The occurrence of Mycobacterium species in clinically healthy pet reptiles was studied in Italy during the period 2004–2006. The feces samples of 223 animals were examined bacteriologically. Thirty-seven strains were isolated, in particular from 13/18 (72.2%) ophidians, 13/134 (9.7%) saurians and 11/71 (15.5%) chelonians. The isolates were classified, after HPLC analysis of bromophenacyl esters of cell wall mycolic acids, as Mycobacterium fortuitum (14 strains, 37.8%), Mycobacterium fortuitum-like (17, 45.9%), Mycobacterium peregrinum (4, 10.8%), and Mycobacterium chelonae (1, 2.7%). M. fortuitum was isolated from seven pythons, five saurians and two turtles; M. fortuitum-like from six saurians, six pythons and five turtles; M. peregrinum from four turtles; M. chelonae from one lizard. One isolate from an Iguana iguana could not be identified by HPLC analysis showing a previously unreported profile. Comparative 16S rDNA sequencing showed a low similarity with Mycobacterium triviale (97.2%) and Mycobacterium confluentis (97.1%). On the basis of such data the unidentified bacterium turned out to belong to a not yet described Mycobacterium species.
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