The aim of this work was to present a preliminary knowledge of the parasitic copepods of marine fish of Turkey. In this study, four parasitic crustaceans were reported from five different fish species found in Turkish seas: Lepeophtheirus europaensis (Zeddam, Berrebi, Renaud, Raibaut & Gabrion, 1988) was found on the gills of the European flounder, Platichtys flesus (Linnaeus, 1758 (Pleuronecti...

Life cycle assessment is used in this study to evaluate the potential environmental impacts of producing gilthead seabream in an offshore sea farm exposed to storms in the Spanish Mediterranean Sea. The farming methods used can be considered as “basic” since no centralized or automatic food distribution system exists and there is no control system. This study aims to identify the main hotspots ...

the major sources of pahs are anthropogenic. these may be generated by pyrolytic and petrogenic processes. low molecular weight pahs come into the aquatic system through the accidentally leakage of oil spills. incomplete combustion at high temperature will release high molecular weight pahs by products of pyrolytic processes. the methods for assigning sources of pahs include paired isomeric rat...

Food and feeding habits of the Santer Seabream Cheimerius nufar were studied from the Arabian Sea coast of Oman for two years during April 2005-March 2007. The stomach contents consisted of substantial quantities of semi-digested matter and identifiable items like sardines, crab, squid, cuttlefish and other crustacean remains indicating the fish is an active carnivore. There was not much variat...

Some S. aurata (one wild and two farmed fish) populations namely, (D, A & K21) were genetically characterized using some DNA markers. The homogeneity value was high within each estimated fish population. The genetic dissimilarity values were calculated for reconstruction the dendrogram among them. The (D) population was distantly related from (A & K21) populations. The results suggested that, t...

The key event in prion pathogenesis is the structural conversion of the normal cellular protein, PrP(C), into an aberrant and partially proteinase K resistant isoform, PrP(Sc). Since the minimum requirement for a prion disease phenotype is the expression of endogenous PrP in the host, species carrying orthologue prion genes, such as fish, could in theory support prion pathogenesis. Our previous...

An analytical method involving anion exchange high performance liquid chromatographic determination of vitellogenin (Vtg) in fish plasma after postcolumn fluorescence derivatization with o-phthalaldehyde (OPA) was developed. The retention time of Vtg was about 11 min. The reagent variables for derivatization were optimized. The fluorophore was excited at 335 nm and detected at 435 nm. A calibra...

Polycyclic aromatic hydrocarbons (16 EPA list) were determined in oils, fish feed, and fillets from gilthead sea bream fed through a full production cycle (14 months) with feed containing different proportions of fish oil replaced by vegetable oils, followed by a finishing phase with fish oil. At the beginning of the study, fish presented 46.6 microg/kg fresh weight of the sum of PAHs in fillet...