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Hakan I.,Central Fisheries Research Institute | Bolat Y.,Firat University
Turkish Journal of Fisheries and Aquatic Sciences | Year: 2011

Existence of viral hemorrhagic septicemia virus (VHSV) has been recently reported in Turkey. A total of 5967 marine and freshwater fish were sampled to detect VHSV between 2007 and 2009 in the Black Sea region of Turkey. Of the 5967 fish, five fish tested positive by PCR reactions of tissue filtrates and supernatants of cell cultures showing CPE indicated by a specific 587 bp fragments from the glycoprotein (G) gene of VHSV. All the VHSV positive fish were turbots and none of the other fish species was VHSV positive. The nucleotide sequences among five isolates had shown 96% to 99% homology. In the phylogenetic study, all the new isolates were genogroup 1e. In this study, it was also discovered that an IPNV-VHSV mixed infected wild turbot. © Published by Central Fisheries Research Institute (CFRI) Trabzon, Turkey in cooperation with Japan International Cooperation Agency (JICA), Japan.

Dalgic G.,Recep Tayyip Erdogan University | Gumus A.,Ondokuz Mayis University | Zengin M.,Central Fisheries Research Institute
Turkish Journal of Zoology | Year: 2013

One female specimen of Serranus hepatus (Linnaeus, 1758) (Perciformes, Serranidae) was captured of the Black Sea coast of Turkey by bottom trawl at a depth of 80-90 m on 23 March 2012. This is the first record of this species for the Black Sea. © TÜBİTAK.

Kasapoglu N.,Central Fisheries Research Institute | Duzgunes E.,Karadeniz Technical University
Mediterranean Marine Science | Year: 2014

The length-weight (L-W) relationships of 19 fish species, 4 molluscs and 2 crustacean species, caught during January 2009 and November 2011, are presented. The mean value of 'parameter b' was 2.881±0.399, ranging from 1.758 to 3.616. The L-W relationships for all studied species were significant (P<0.01), whereas they were isometric only for three species (i.e. Scorpaena porcus, Pomatomus saltatrix and Neogobius melanostomus).

Alkan N.,Karadeniz Technical University | Aktas M.,Central Fisheries Research Institute | Gedik K.,Karadeniz Technical University
Bulletin of Environmental Contamination and Toxicology | Year: 2012

In this study, it was aimed to determine accumulation of the metal concentrations in fish species in different regions which are Sürmene and Yomra bay at southeastern Black sea in Trabzon-Turkey. For this purpose, concentrations of metals (Cr, Co, Ni, Cu, Zn, As, Se, Cd, Sb, Hg, Pb) were measured by inductively coupled plasma mass spectrometry (ICP-MS) in muscle of red mullet (Mullus barbatus ponticus) and whiting (Merlangius merlangus euxinus). Metal concentrations were found for whiting ranged as follows; 0.35-1.64 (Cr), 0.01-0.09 (Co), 0.01-0.71 (Ni), 0.71-1.45 (Cu), 18.64-68.06 (Zn), 2.05- 9.66 (As), 0.15-14.16 (Se), 0.01-0.22 (Cd), 0.01-0.01 (Sb), 0.01-0.15 (Hg), 0.01-0.25 (Pb) and for red mullet as 0.43-1.04 (Cr), 0.05-0.23 (Co), 0.02-0.67 (Ni), 0.74-2.32 (Cu), 19.89-43.50 (Zn), 6.04-24.82 (As), 0.02-9.83 (Se), 0.01-0.11 (Cd), 0.01-0.01 (Sb), 0.07-0.18 (Hg), 0.01-0.20 (Pb) μg g -1 dry weight. Metal concentrations in samples were found to be lower than legal limits proposed by Turkish Food Codex (2008), Food and Agricultural Organization (1983), and European Commission (Off J Eur Union L364-5-L364-24, 2006) for human consumption. © Springer Science+Business Media, LLC 2012.

Ture M.,Central Fisheries Research Institute | Altinok I.,Karadeniz Technical University
Diseases of Aquatic Organisms | Year: 2016

Lactococcus garvieae is the causative agent of lactococcosis and has been isolated from a wide variety of animals. In the present study, 34 strains of L. garvieae isolated from fish from different sources and locations were tested for the presence or absence of the following putative virulence genes: a capsule gene cluster (CGC), hemolysins 1, 2, and 3 (hly1, -2, -3), NADH oxidase, superoxide dismutase (sod), phosphoglucomutase (pgm), adhesin Pav (adhPav), adhesin PsaA (adhPsaA), enolase (eno), LPxTG-containing surface proteins 1, 2, 3, and 4 (LPxTG-1, LPxTG-2, LPxTG-3, LPxTG-4; where LPxTG means Leu-Pro-any-Thr-Gly), adhesin clusters 1 and 2 (adhCI, adhCII), and adhesin (adh). To determine the presence of the CGC, we developed a multiplex PCR. All strains of L. garvieae had the hly1, -2, -3, NADH oxidase, pgm, adhPav, LPxTG-2, LPxTG-3, sod, eno, adhPsaA, adhCII, and adhCII genes, while only the Lg2 strain contained the CGC. The virulent Lg2 strain contained all 17 virulent genes. All Turkish, Spanish, Italian, and French strains did not contain the CGC. The multiplex PCR assay was useful for the detection of the CGC genes. In conclusion, the CGC is not the only virulent factor in L. garvieae because strains that lack the CGC are virulent to rainbow trout. Single genes also might not be responsible for the virulence of L. garvieae. © Inter-Research 2016.

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