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Carriage of potentially fish-pathogenic bacteria in Sparus aurata cultured in Mediterranean fish farms

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Carriage of potentially fish-pathogenic bacteria in Sparus aurata cultured in Mediterranean fish farms

dc.contributor.author	Pujalte Domarco, María Jesús
dc.contributor.author	Sitjà-Bobadilla, Ariadna
dc.contributor.author	Álvarez Pellitero, P.
dc.contributor.author	Garay Auban, Esperanza
dc.date.accessioned	2011-08-19T09:12:55Z
dc.date.available	2011-08-19T09:12:55Z
dc.date.issued	2004
dc.identifier.citation	PUJALTE DOMARCO, M Jesus ; Sitjà-Bobadilla, Ariadna ; Álvarez-Pellitero, P. ; Garay Auban, Esperanza, 2004, Carriage of potentially fish-pathogenic bacteria in Sparus aurata cultured in Mediterranean fish farms, Diseases of Aquatic Organisms, vol. 54, no. 2, p. 119-126	en
dc.identifier.uri	http://hdl.handle.net/10550/20049
dc.description.abstract	A bacteriological survey of gilthead sea bream Sparus aurata from different fish farms and culture systems on the Spanish Mediterranean coast was conducted. Three different studies were performed. Study A included hatchery-reared larvae; Study B, periodic examination of randomly sampled growing fish; and Study C, growing fish sampled only during mortality/morbidity events. In Studies B and C, sea cages, earth ponds and indoor tanks were surveyed, and in both cases diseased (showing clinical signs) and non-diseased fish were included. In Study A, a shift from Vibrio spp. (30 d after hatching) to oxidative species (60 d after hatching) was detected, and no mortality events were registered. The percentage of fish yielding bacterial growth were similar in Studies B and C, reaching 57.4 and 61.3%, respectively. A statistically significant relationship between the bacterial carriage and the type of facility was only found in Study B, showing that fish from sea cages had a higher bacterial occurrence than fish from other facilities. A statistically significant relationship between bacterial carriage and signs of disease was found, although the pattern differed in each study. Thus, in Study B only 36.2% of fish yielding abundant bacterial growth were diseased, versus 68.0% in Study C. In total, 25.0% of the fish examined were diseased. Bacterial species composition was similar in asymptomatic and diseased fish, except for a group of V. ichthyoenteri-like isolates that occurred almost exclusively in asymptomatic fish. Dominant bacterial species were V. harveyi and V. splendidus, followed by V. ichthyoenteri-like isolates, Photobacterium damselae ssp. damselae and V. fisheri. Non-fermenters were less frequent but, among them, unidentified halophilic Cytophaga-Flavobacterium isolates and Pseudoalteromonas haloplanktis were the most abundant. An association of individual species with disease was not clear, which suggests the involvement of mixed infections.	en
dc.language.iso	en	en
dc.subject	Sparus aurata ; Vibrio harveyi ; Vibrio splendidus ; Photobacterium damsela ; Pseudoalteromonas haloplanktis ; Vibrio ichthyoenteri ; Mediterranean aquaculture	en
dc.title	Carriage of potentially fish-pathogenic bacteria in Sparus aurata cultured in Mediterranean fish farms	en
dc.type	journal article	es_ES
dc.subject.unesco	UNESCO::CIENCIAS DE LA VIDA	en
dc.subject.unesco	UNESCO::CIENCIAS DE LA VIDA::Biología animal (Zoología)	en
dc.identifier.doi	10.3354/dao054119	en
dc.identifier.idgrec	001538	en
dc.type.hasVersion	VoR	es_ES
dc.identifier.url	http://www.int-res.com/articles/dao2003/54/d054p119.pdf	en