Effects of different water treatment methods and antibiotic addition on larval survival and gut microflora development in Atlantic halibut ( Hippoglossus hippoglossus L.) yolk-sac larvae

The survival of Atlantic halibut ( Hippoglossus hippoglossus) yolk-sac larvae and the development of their gut bacterial flora were compared in pilot-commercial scale rearing trials under different conditions. Four different treatments were tested; water recirculation using non-disinfected embryos (...

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Bibliographic Details
Published in:Aquaculture 2004-04, Vol.232 (1), p.129-143
Main Authors: Verner-Jeffreys, David W, Shields, Robin J, Bricknell, Ian R, Birkbeck, T.Harry
Format: Article
Language:English
Subjects:
Animal aquaculture
Animal productions
Antibiotics
Aquaculture
Atlantic halibut
Bacteria
Biological and medical sciences
Digestive system
Fish
Fundamental and applied biological sciences. Psychology
General aspects
Gut microflora
Hippoglossus hippoglossus
Larval rearing
Marine
Pseudoalteromonas
Recycled water
Water treatment
Yolk-sac larvae
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Summary:The survival of Atlantic halibut ( Hippoglossus hippoglossus) yolk-sac larvae and the development of their gut bacterial flora were compared in pilot-commercial scale rearing trials under different conditions. Four different treatments were tested; water recirculation using non-disinfected embryos (RN); water recirculation using disinfected embryos (RS); flow-to-waste water with disinfected embryos (F); flow-to-waste water with disinfected embryos and addition of antibiotics, oxytetracycline, oxolinic acid and amoxycillin at 20 mg l −1 (FA). Mean survival was greatest in the FA group (53%), which was significantly higher ( p71% morphologically normal larvae in all treatments. Addition of antibiotics appeared to prevent the colonisation of yolk-sac larvae by Marine Agar (MA)-culturable bacteria (
ISSN:0044-8486
1873-5622
DOI:10.1016/S0044-8486(03)00525-8