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Title

A model for experimental infections with Vibrio (Listonella) anguillarum in first feeding turbot (Scophthalmus maximus L.) larvae under hatchery conditions

AuthorsPlanas, Miguel ; Pérez-Lorenzo, María ; Vázquez, José Antonio ; Pintado, José
KeywordsInfection model
Larval rearings
Vibrio anguillarum
Rotifer
Turbot
Scophthalmus maximus
Issue Date2005
PublisherElsevier
CitationAquaculture 250(1-2): 232-243 (2005)
AbstractVibriosis is one of the main causes of mortality in all stages of fish. In larvae, further improvements on the control and knowledge of bacterial diseases require the development of models for experimental infections. A reproducible model for in vivo infections of first feeding turbot (Scophthalmus maximus) larvae with the pathogen Vibrio (Listonella) anguillarum is described. Experimental challenges were carried out under hatchery conditions considering different ways of delivery of V. (Listonella) anguillarum strain 90-11-287 serotype O1 to turbot larvae: via rotifers (orally) and via water of the larval rearing tanks (bath). The effect of the supernatant of the bacteria culture was also considered and discussed. The model proposed is based on the incorporation of the bacteria into previously enriched rotifers and the delivery to the larvae during the rotifer feeding period. The effect of infections was already evident 24–72 h after the first challenged day. Final mortalities (days 8–14) in infected larvae were 56–72% with respect to unchallenged larvae. Mortalities achieved by applying the protocol of infection are reliable, reproducible and adequate for experimental purposes. The model of infection via rotifers proposed in this study is a useful tool for experimental purposes in the larval rearing of marine fish.
Description12 páginas, 4 figuras, 4 tablas
Publisher version (URL)http://dx.doi.org/10.1016/j.aquaculture.2005.04.050
URIhttp://hdl.handle.net/10261/51514
DOI10.1016/j.aquaculture.2005.04.050
ISSN0044-8486
Appears in Collections:(IIM) Artículos
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