Presence of acid-fast bacteria in wild and cultured silver mullets (Mugil curema VAL., 1836) from Margarita Island Venezuela

Citation
At. Perez et al., Presence of acid-fast bacteria in wild and cultured silver mullets (Mugil curema VAL., 1836) from Margarita Island Venezuela, INTERCIENCI, 26(6), 2001, pp. 252-256
Citations number
48
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Multidisciplinary
Journal title
INTERCIENCIA
ISSN journal
0378-1844 → ACNP
Volume
26
Issue
6
Year of publication
2001
Pages
252 - 256
Database
ISI
SICI code
0378-1844(200106)26:6<252:POABIW>2.0.ZU;2-H
Abstract
Twenty specimens of silver mullet (Mugil curema Val., 1836) from the La Res tinga coastal lagoon complex in Margarita Island, Venezuela, and 20 specime ns of the same species cultured in sea water ponds at Boca de Rio, in the s ame locality, were examined for the presence of acid-fast bacteria. Samples from the faeces and intestinal contents, kidney, fiver and spleen were tre ated by Petroff method. Smears were taken from the centrifuged sediment and stained by a modified Ziehl-Neelsen technique, and the sediment was cultur ed on tubes of Lowenstein-Jensen medium. Acid-fast bacteria were detected i n smears from five (25%) of the wild mullets, and five (25%) of the culture d mullets. Three strains of mycobacteria were isolated from the wild fish a nd one strain from the cultured fish. These four strains were identified as Mycobacterium chelonei subsp. abscessus, M. chelonei subsp. chelonei, M. f ortuitum and M. scrofulaceum. The strains were isolated from the faeces and spleens of the infected fish. The presence of mycobacteria as the aetiolog ical agents of tuberculosis in grey mullets and other fish species is discu ssed in relation to the importance of these organisms as potential human pa thogens. It is recommended that populations of mullets used as a source of seed or spawning stock for aquaculture operations be carefully monitored to detect the possible occurrence of latent and/or patent acid-fast bacterial infections.