Cultured Sea Bass Dicentrarchus Labrax Research Articles

Associated Immune Status of Cultured Sea Bass Dicentrarchus Labrax Vaccinated with Killed Vaccine Against Vibriosis

Associated Immune Status of Cultured Sea Bass Dicentrarchus Labrax Vaccinated with Killed Vaccine Against Vibriosis

Bacterial communities 16S rDNA fingerprinting as a potential tracing tool for cultured seabass Dicentrarchus labrax

Traceability of seafood has become crucial with market globalization and consumer’s awareness. The present study used PCR-DGGE and 454 pyrosequencing to assess if bacterial communities fingerprint associated to seabass (Dicentrarchus labrax) skin mucus can be used to discriminate the geographic origin of fishes cultured in three semi-intensive fish farms. PCR-DGGE and pyrosequencing results were congruent and suggested that this molecular approach has the potential to trace fish farms with a spatial resolution <500 m. Pyrosequencing results provided a detailed insight into the bacterial community composition of seabass skin mucus and revealed the existence of a core of bacterial communities within family Pseudomonadaceae and Rhodobacteraceae. This approach also allowed to recognized key OTUs that are potentially relevant to discriminate the geographic origin of the fish being surveyed. Overall, the present study increased our knowledge on farmed seabass microbiome and demonstrated that specific and unique bacterial taxa can act as natural signatures that allow us to trace fish to its respective geographic origin. Our study provides valuable clues that should be more investigated in future studies as a way to fulfill current traceability needs in the global trade of seafood.

Fish farming and anti-fouling paints: a potential source of Cu and Zn in farmed fish

AEI Aquaculture Environment Interactions Contact the journal Facebook Twitter RSS Mailing List Subscribe to our mailing list via Mailchimp HomeLatest VolumeAbout the JournalEditorsTheme Sections AEI 5:163-171 (2014) - DOI: https://doi.org/10.3354/aei00101 Fish farming and anti-fouling paints: a potential source of Cu and Zn in farmed fish Marina Nikolaou*, Nikos Neofitou, Konstantinos Skordas, Ioanna Castritsi-Catharios, Lamprini Tziantziou School of Agriculture, Department of Ichthyology and Aquatic Environment, University of Thessaly, Fytokou St., N. Ionia, 38446 Volos, Greece *Corresponding author: maze55@live.com ABSTRACT: The accumulation of copper and zinc, the basic components of anti-fouling paints, was examined in cultured sea bass Dicentrarchus labrax and sea bream Sparus aurata. Samplings were carried out at 4 eastern Mediterranean fish farms. Two of the farms used nets treated with anti-fouling paints, and 2 used untreated nets. At each farm samples of sediment and fish tissue (muscle, liver and gills) were analysed for heavy metal concentrations. The results showed that while total copper and zinc concentrations in sediments were quite similar in samples collected from the 4 farms, the extractable copper concentration in sediment from farms using anti-fouling treatment was 2 to 3 times higher than from those using untreated nets. Statistical analysis revealed no significant differences for either metal between sediment samples from farms using anti-fouling treatment and those which did not, except for extractable copper concentrations. However, analysis of the biological samples showed that copper concentrations in muscle tissue were lower in samples from farms using untreated nets, with the highest copper concentrations being observed in fish livers from farms using anti-fouling paints. General linear model results indicated significant differences between heavy metal concentrations in fish samples from farms using anti-fouling paints and those which did not. Furthermore, 1-way ANOVA indicated that these differences were confined to liver tissue for zinc, whereas significant differences for copper were seen in all tissues (except for gills of sea bream) for both species studied. These results indicate that the use of anti-fouling paints may be a potential source of metal accumulation in cultured fish. KEY WORDS: Aquaculture · Anti-fouling · Copper · Zinc · Fish · Eastern Mediterranean Full text in pdf format PreviousNextCite this article as: Nikolaou M, Neofitou N, Skordas K, Castritsi-Catharios I, Tziantziou L (2014) Fish farming and anti-fouling paints: a potential source of Cu and Zn in farmed fish. Aquacult Environ Interact 5:163-171. https://doi.org/10.3354/aei00101 Export citation RSS - Facebook - Tweet - linkedIn Cited by Published in AEI Vol. 5, No. 2. Online publication date: June 18, 2014 Print ISSN: 1869-215X; Online ISSN: 1869-7534 Copyright © 2014 Inter-Research.

Use of muscle activity indices as a relative measure of well-being in cultured sea bass Dicentrarchus labrax (Linnaeus, 1758)

Use of muscle activity indices as a relative measure of well-being in cultured sea bass Dicentrarchus labrax (Linnaeus, 1758)

Preliminary trials on the efficacy and toxicity of ivermectin against Lernathropus kroyeri Van Beneden, 1851 in cultured sea bass Dicentrarchus labrax L.

Preliminary trials on the efficacy and toxicity of ivermectin against Lernathropus kroyeri Van Beneden, 1851 in cultured sea bass Dicentrarchus labrax L.

First record of Emetha audouini, a cymothoid isopod parasite, from cultured sea bass Dicentrarchus labrax in Greece.

For the first time, Emetha audouini (Milne Edwards, 1840), a cymothoid isopod, is reported parasitising cage cultured sea bass Dicentrarchus labrax L., 1758 in Greece. The specimens observed are larvae (Pulli II). They were found in great numbers in the buccal and branchial cavity of young (3.5 m.o. old) sea bass, in an intensive cage farm facility. This parasite is certainly transferred to sea bass from wild populations of Sparidae or Centracanthidae. Serious lesions were visible and typical of a crustacean infection, with extensive and deep skin damage in the head area. The cumulative mortality, over a 2 wk period, was 10.75%. The parasitic problem was successfully dealt with by optimization of management practices rather than use of costly and dangerous chemotherapeutants.

First report of Ichthyophonus disease in wild and cultured sea bass Dicentrarchus labrax from the Spanish Mediterranean area

First report of Ichthyophonus disease in wild and cultured sea bass Dicentrarchus labrax from the Spanish Mediterranean area