Yazar "Ozalp, Baris" seçeneğine göre listele
Listeleniyor 1 - 5 / 5
Sayfa Başına Sonuç
Sıralama seçenekleri
Öğe ANTHOZOANS OF THE SEA OF MARMARA(Turkish Marine Research Foundation-Tudav, 2016) Topcu, Nur Eda; Ozalp, Baris[Anstract Not Available]Öğe Bioaccumulation of trace metals in Mediterranean mussels (Mytilus galloprovincialis) from a fish farm with copper-alloy mesh pens and potential risk assessment(Taylor & Francis Inc, 2018) Yigit, Murat; Celikkol, Barbaros; Yılmaz, Sevdan; Bulut, Musa; Ozalp, Baris; Dwyer, Robert L.; Maita, MasashiConcentrations of trace metals were determined in the muscle tissue, digestive gland and gills of Mediterranean mussels (Mytilus galloprovincialis) collected from different locations around an offshore copper alloy fish farm. Levels of copper (Cu), zinc (Zn), manganese (Mn) and iron (Fe) as mg/kg wet weight in the edible part of the mussels collected from distant zone (upstream Zn7.33 > Fe2.8 > Cu0.13 > Mn0.07 and downstream Zn9.9 > Fe5.67 > Cu0.18 > Mn0.17) were significantly lower (p < 0.05) than those sampled from the cage zone (bottom panel Zn22.25 > Fe13.75 > Cu2.39 > Mn0.85 and cage frame Zn17.1 > Fe8.74 > Cu1.39 > Mn0.26). Trace metal concentrations in mussels were significantly higher (p < 0.05) in the samples from the frame and bottom panel of the copper alloy mesh pen, compared to those from distant areas, namely the farm affected downstream - and non-affected upstream locations. However, the rates of target hazard quotients (THQ) for all tested trace metals from all locations in the present study were smaller than one (THQ < 1), indicating that the consumption of mussels grown around a cage farm with copper alloy mesh pens were within safe limits and did not exceed maximum levels suggested by the US Food and Drug Administration (USFDA) and European Union (EU) regulations for seafood consumption.Öğe Comparision of copper alloy mesh with conventional nylon nets in offshore cage farming of gilthead seabream (Sparus aurata)(Central Fisheries Research Institute, 2018) Yigit, Murat; Celikkol, Barbaros; Ozalp, Baris; Bulut, Musa; Dwyer, Robert L.; Yılmaz, Sevdan; Maita, MasashiIn the present study, a new net technology of copper alloy mesh (CAM) was tested and compared with traditional nylon nets either with (TNN+AF)-or without antifouling coats (TNN–AF) in a long-term growth experiment on gilthead seabream (Sparus aurata). Fish performed better growth and feed utilization in the CAM pen over the TNN+AF and TNN–AF, with a survival rate over 85% in all cage environments after the 7 months growth period. Relative wet weight gain of seabream in the CAM and TNN+AF pens were 25% and 15% higher compared to the TNN–AF cage, respectively. Surface of the TNN–AF mesh remained clean for two months after sea water deployment, while the mesh size in the TNN+AF pen remained effective for four months, and shrinking in mesh size thereafter. Dissolved oxygen was highest inside the CAM followed by the TNN+AF and TNN–AF cages, respectively. The results of the present study demonstrate that CAM might be beneficial for cage farming in offshore conditions, however further studies are encouraged to evaluate leaching of metals into the marine environment as well as toxic influences on fish tissues and health risks to human consumers. © 2018, Central Fisheries Research Institute. All rights reserved.Öğe Health Risks Associated with Trace Metals in Gilthead Seabream (Sparus aurata) from Copper Alloy and Antifouling-Coated Polymer Nets(Springer International Publishing Ag, 2020) Yigit, Murat; Dwyer, Robert; Yılmaz, Sevdan; Bulut, Musa; Ozalp, Baris; Buyukates, Yesim; Ergün, SebahattinThe aim of the present study was to evaluate risk levels of trace elements in gilthead seabream (Sparus aurata) from conventional polymer nets and copper alloy mesh with reference to hazard levels and maximum allowable limits for human consumption. Bioaccumulation of trace metals in muscle tissues of fish from copper-alloy mesh, and antifoulant-coated net presented elevated levels in the order of Fe(5.76) > Zn(5.56) > Cu(0.53) > Mn(0.28), and Zn(5.20) > Fe(3.97) > Cu(0.56) > Mn(0.26), respectively, compared to the untreated polymer net pen as Zn(3.61) > Fe(3.12) > Cu(0.44) > Mn(0.16) mg/kg wet weight. However, metal levels in fish harvested from all experimental cages did not exceed maximum permitted levels for seafood safety. Target hazard quotients and total hazard indexes, calculated for the evaluation of non-carcinogenic health risks via metal intake through the consumption of possibly contaminated fish, were found lower than one (THQ < 1; THI < 1). Maximum allowable consumption levels (kg/day/person) were found in the order of Mn(39.27) > Cu(18.87) > Fe(7.81) > Zn(7.19), Mn(42.31) > Cu(17.86) > Fe(11.34) > Zn(7.69), and Mn(68.75) > Cu(22.73) > Fe(15.96) > Zn(11.08) for fish from copper-alloy mesh, antifoulant-treated net, and untreated polymer net pen, respectively. The results of this study showed that the trace metals in the edible muscle of fish from both copper alloy and antifoulant-coated net pens were below human health risk levels, according to the limits suggested by US Food and Drug Administration and EU Regulations for Seafood Consumption.Öğe Macrofloral and macrofaunal biodiversity on the shipwrecks of the Gallipoli Campaign - Life on the deadliest battleships(Turkish Marine Research Foundation-Tudav, 2023) Oz, M. Idil; Acarli, Deniz; Kedioglu, Cetin; Ozalp, Baris; Evcen, AlperA total of 127 macro organisms; 17 floral and 110 faunal, were identified by means of in situ observations on 7 of the Gallipoli Campaign shipwrecks. Twenty species have economical value and four species were determined to have been in IUCN List of Threatened Species on different levels. Protection measures should be taken not only for the sunken ships but also for the marine life growing on them.
