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Öğe Chemometric classification of some elements in wild and farmed bluefin tuna (Thunnus thynnus L1758) [Doga ve çiftlik orkinoslari{dotless}nda (Thunnus thynnus l1758) tespit edilen bazi{dotless} elementlerin kemometrik si{dotless}ni{dotless}flandi{dotless}rmasi{dotless}](2011) Sogut O.; Percin F.; Konyalioglu S.Bluefin tuna Thnunnus thynnus 1758 (BFT) belongs to Scombridae family, is native species to subtropical regions of Atlantic Ocean, Mediterranean and Black Sea. The concentration some essential elements (Cu, Fe, Mg, Mn, Ni, Zn) and non-essential element (Pb) have been determined a total of 60 individuals of T. thynnus were collected: 30 captured in the wild and 30 sampled from a tuna farm using flame atomic absorption spectrometry. A preliminary chemometric study with the use of patttern recognition methods was carried out in order to characterise, classify and distinguish the different parts BFT. Multivariate chemometric techniques such as principle component analysis (PCA) and K nearest neighbour (KNN) are used to classify BFT to their type and origin on the basis of chemical data. Metal concentrations seem to be good candidates for classification system, as they are stable. This study clearly reported that PCA procedures appear useful tools for differentiation and classification of wild and farmed BFT using the profile of trace elements.Öğe Magnesium levels in vital organs of Bluefin Tuna, Thunnus thynnus L., from the Turkish region of Eastern Mediterranean(2010) Percin F.; Sogut O.One of the macro elements, Magnesium (Mg) found in the heart, liver and kidney tissues was analyzed and compared between wild/fattened and female/male Bluefin Tuna (BFT) in the Turkish region of the Eastern Mediterranean. For this purpose, 110 individual (i.e., 55 female and 55 male) samples of wild and fattened tuna were investigated. Mean Mg levels in the heart, liver and kidney tissues of wild BFT were found to be as follows: 42.52, 46.73 and 38.60 mg/100 g w wt. Analogous data for the fattened fish were as follows: 38.06, 49.74 and 41.13 mg/100 g w wt. In comparison of wild with fattened fish, Mg differences in the heart, liver and kidney tissues were significant (p<0.05). In terms of gender, mean Mg values in the heart, liver and kidney tissues of 55 wild and 55 fattened individual female BFT were analyzed, respectively to be as follows: 45.12, 49.47, 41.08 and 38.37, 51.02, 44.24 mg/1 OOg w wt. Additionally, these parameters for the same tissues of 55 wild and 55 fattened male specimens were detected, respectively to be as follows: 39.93, 43.98, 36.12 and 37.74, 48.45, 38.02 mg/100 g w wt. According to gender, differences in levels of Mg in the heart and kidney tissues of wild vs. fattened female samples were significant except for liver tissues (p<0.01) however, for male specimens, differences in Mg in the same tissues of wilds vs. females were significant (p<0.05). © Medwell Journals, 2010.Öğe Serum biochemical profiles of captive and wild northern bluefin tuna (Thunnus thynnus L. 1758) in the Eastern Mediterranean(2008) Percin F.; Konyalioglu S.Northern bluefin tuna (NBT) are a prominent marine pelagic fish species. There are few reference values for their blood chemistry and this is the first report to demonstrate blood biochemical values in the Eastern Mediterranean. The study was carried out with 60 captive (penned) and 60 wild NBTs from Ildir Bay (Izmir) and Antalya Bay in the Eastern Mediterranean, from winter to early summer 2003. The aim of this research was to determine the biochemical parameters of wild male/female and captive male/female NBTs. According to the present results, the blood biochemical values of the captive NBTs were significantly higher than those of wild NBTs (P<0.05) except albumin, globulin, total protein and very low-density lipoprotein levels. Moreover, many of the biochemical parameters were detected at high levels in captive and wild male NBTs than those of the females. Especially, the values of glucose, lactate dehydrogenase, creatine phosphokinase, ?-glutamyl transferase, cholesterol, triglyceride, low-density lipoprotein, ferritin, transferrin and iron levels were significantly higher, although high-density lipoprotein values were significantly lower in wild and captive male samples than those of both groups of females (P<0.05). © 2008 The Authors.Öğe Serum electrolytes of wild and captive bluefin tuna (Thunnus thynnus L.) in Turkish seas(2010) Percin F.; Konyalioglu S.; Firat K.; Saka S.The aim of the study was to investigate serum electrolytes-sodium (Na), potassium (K), chloride (Cl), Calcium (Ca), Magnesium (Mg) and phosphorus (P) in wild and captive Bluefin Tuna (BFT) in the Eastern Mediterranean. For this purpose, 127 individual samples consisting of 62 wild and 65 farmed samples were chosen. The wild fish was obtained from Antalya Bay and the captives were taken from a tuna farm in Ildir Bay (Izmir) during the spring. The mean serum electrolyte levels of wilds were found to be as follows: 209.84 mmolL-1, 9.84 mEqL-1, 183.47 mmolL-1, 7.49 mEqL-1, 7.83 mg 100 ML-1, 5.03 mg 100ML-1. Analogous data for the captive fish were detected as follows: 205.85 mmolL-1, 6.46 mEqL-1, 180.45 mmolL-1, 7.19 inEqL-1, 6.68 mg 100 mL-1, 3.32 mg 100 mL-1. In comparing the wild with the captive fish, the K, Mg and P differences were significant, except for Na, Ca and CL (p<0.05). On the other hand in terms of gender, the mean serum electrolyte levels of 30 wild and 30 captive individual female BFT were determined, respectively to be as follows: Na, 205.58, 201.47 mmolL-1;K,8.73,6.38 mEqL-1;CL,186.25,182.63mmolL-1;Ca,7.19, 6.71 mEqL-1;Mg, 5.92, 6.52 mg 100 mL-1; P, 4.43, 3.06 mg 100 mL-1. In addition, these parameters for 32 wild and 35 captive male specimens were detected, respectively to be as follows: Na, 214.09, 210.23 mmolL-1; K, 10.95, 6.54mEqL-1; CL, 180.68, 178.27 mmolL-1; Ca, 7.78, 7.67 mEqL-1; Mg, 8.47, 6.83 mg 100mL-1; P, 5.62, 3.58 mg 100 mL-1. According to gender, the differences in K, Mg and Pin wild vs. captive female and wild vs. captive male samples were significant (p<0.05). However, the Na, Cl and Ca differences were not significant between wild and captive female and male specimens (p>0.05). © Medwell Journals, 2010.Öğe Some morphometric relationships in fattened blucfin tuna, Thunnus thynnus L., from the Turkish Aegean Sea(2010) Percin F.; Akyol O.This study reports Length-Weight (LWR), Length-Length (LLR) and Length-Girth (LGR) relationships of Bluefin Tuna (BFT), Thunnus thynnus raised in captive conditions during 18 months in the Turkish Aegean Sea. A total of 702 specimens, 346 males and 356 females were measured for Fork Length (FL) and weighed on the deck of the harvesting ship during December 2009. Fish ranged between 113 cm FL (16.5 kg) and 286 cm FL (355.5 kg) with an average of 171±1.4 cm (84.9±2.4 kg) in both sexes. The LWRs indicated positive allometric growth in both sexes (the mean value of b was 3.193±0.08). Results indicated that the LLRs and LGRs were highly correlated (R2>0.99- >0.98, p <0.001). Fulton's condition factor (K) was also calculated for each fork length class for both sexes. K values ranged from 1.30-1.55 (mean: 1.46±0.03) in males and from 1.29-1.51 (mean: 1.44±0.02) in females. The daily feed intake of BFT was 16.7% and according to the girth values, some BFTs (>230 cm FL and 180 kg) were observed to be over-fattened. © Medwell Journals, 2010.Öğe Trace elements in heart tissue of wild and fattened bluefin tuna {Thunnus thynnus L. 1758 in the Turkish part of the Eastern Mediterranean(WFL Publisher Ltd., 2010) Percin F.; Sogut O.The objective of this research was to analyze four essential elements, copper (Cu), manganese (Mn), zinc (Zn) and iron (Fe), one potentially essential element, nickel (Ni), and one non-essential element, lead (Pb), in heart tissues between wild/fattened and female/male bluefin tuna in the eastern Mediterranean near Turkey. Hundred individual samples of wild and fattened tuna, including 50 female and 50 male fish, were investigated. Wild fish were obtained from Antalya Bay and the fattened samples were taken from a tuna fish farm in Ildir Bay (Izmir) during the spring. The mean trace elements of wilds were determined to be: Pb, 0.051 ; Cu, 0.725; Mn, 0.123; Ni, 0.130; Zn, 3.398; and Fe, 6.459 (µg/g wt wt). Values for fattened fish were as follows: Pb, 0.044; Cu, 0.558; Mn, 0.125; Ni, 0.107; Zn, 3.328; Fe, 6.749 (µg/g wt wt). In comparing wild and fattened fish, all differences were significant except those of Mn and Zn (p<0.05). On the other hand, in terms of gender, mean trace element contents in the heart tissue of wild and fattened female BFTs, respectively, were Pb, 0.052, 0.043; Cu, 0.762, 0.571; Mn, 0.125, 0.130; Ni, 0.146, 0.105; Zn, 3.401, 3.506; and Fe, 6.511,6.583. In addition, these parameters for wild and fattened male BFTs, respectively, were as follows: Pb, 0.050,0.045; Cu, 0.688,0.545; Mn, 0.121,0.120; Ni, 0.114,0.109; Zn, 3.395,3.150; and Fe, 6.407,6.914. In terms of gender, the Pb, Cu, and Ni differences between wild female and fattened female samples were significant (p<0.05). Furthermore, all differences between wild males and captive males were significant except that of Mn (p<0.05). Thus, the mean trace element content in the heart tissue of all BFTs were: Pb, 0.048; Cu, 0.642; Mn, 0.124; Ni, 0.119; Zn, 3.363; and Fe, 6.604.
