Yazarlar
- Kocabaş, Mehmet(8)
- Serdar, Osman(7)
- Can, Erkan(5)
- Kizak, Volkan(5)
- Danabas, Durali(4)
- Kutluyer Kocabaş, Filiz(4)
- Ozcan, Ebru Ifakat(4)
- Yildirim, Numan(4)
- Yildirim, Nuran Cikcikoglu(4)
- Özçiçek, Esin(4)
- Başusta, Nuri(3)
- Demirol, Ferhat(3)
- Gündüz, Fatih(3)
- Kocabaş, Filiz Kutluyer(3)
- Kuzgun, Nermin Karaton(3)
- Yilmaz, Ökkeş(3)
- Aksu, Onder(2)
- Alak, Gonca(2)
- Alp, Ahmet(2)
- Altunok, Muhammet(2)
- Ates, Mehmet(2)
- Bastürk, Ozden(2)
- Başusta, Asiye(2)
- Camas, Mustafa(2)
- Danabas, Seval(2)
- Demir, Veysel(2)
- Ergin, Cemil(2)
- Erol, Nida Demirtas(2)
- Erol, Nida Demirtaş(2)
- Kaya, Gulderen Kurt(2)
- Kayim, Murathan(2)
- Kocabas, Mehmet(2)
- Kurt Kaya, Gülderen(2)
- Kutluyer, F.(2)
- Kutluyer, Filiz(2)
- Onal, Ayten Oztufekci(2)
- Tayhan, Nilgun(2)
- Unlu, Erhan(2)
- Uslu, Gulsad(2)
- Yüksel, Fahrettin(2)
Yayınlar
- MakaleAçık Erişim2023Determination of lipid quality and mercury levels of sardine and rainbow trout cooked with different methods
Çakli, Sukran; Erol, Nida Demirtas; Sen Yilmaz, Evren Burcu; Baldemir, Pinar; Çakli, Atilla
This study aimed to investigate the effects of baking and pan-frying methods on the lipid quality and mercury (Hg) levels of two important fish species in Turkiye, namely, fileted sardine (Sardina pilchardus) and rainbow trout (Oncorhynchus mykiss). The results revealed that sardines significantly decreased n-3 fatty acids depending on the cooking process, while the best n-6/n-3 ratio was observed in baked sardines, with higher rates found in pan-fried fish. Notably, pan-fried rainbow trout cooked with butter showed the highest atherogenic index (AI) of 0.71 +/- 0.32 and thrombogenic index (TI) of 0.61 +/- 1.43, as well as a hypocholesterolemic/hypercholesterolemic index (HH) of 0.79 +/- 0.17. Conversely, fried sardines exhibited lower atherogenic and thrombogenic scores, with fried sardines cooked in sunflower oil having a hypocholesterolemic/hypercholesterolemic index of 4.85 +/- 0.3. There were no significant variations in Hg content between raw and cooked fish. However, when compared to the raw control, the rise in Hg content for baked fish was substantial (p < 0.05) (baked rainbow trout 0.18 mg/kg and sardine 0.29 mg/kg). The decrease in FAs (Fatty Acids) due to cooking methods can be ordered as follows: Raw sardine > baked > fried. Conversely, the increase in FAs due to the cooking methods can be ordered as follows: fried > baked > raw sardine. Baked rainbow trout had much lower levels of palmitic acid, stearic acid, and myristic acid than the raw material. However, these levels were significantly increased in rainbow trout cooked in a frying pan. Additionally, oleic acid levels in fried rainbow trout were detected to be lower than in other preparations, whereas they were equivalent in baked rainbow trout.
AtıfWoS1OpenAlex2TR Dizin1
İncele - MakaleAçık Erişim2023Scopus SJRQ3Seasonal changes in fatty acid profile of the freshwater snail Viviparus contectus (Millet, 1813) from lake habitat
Özçiçek, Esin; Kutluyer Kocabaş, Filiz; Kocabaş, Mehmet; Yilmaz, Ökkeş
The freshwater snail, Viviparus contectus, is an important shellfish owing to its nutritional composition (i.e., high amounts of protein, essential amino acids, fatty acid profile and minerals) and its promise as a candidate for the treatment of some diseases in traditional medicine. Hence, the seasonal changes in the fatty acid (FA) profile of Viviparus contectus caught from Demirköprü Dam Lake were determined in this study. Saturated fatty acid (SFAs) (64.54–80.39% of total fatty acids) had the highest concentration followed by polyunsaturated fatty acids (PUFAs) (10.63–21.83%) and monounsaturated fatty acids (MUFAs) (6.57–10.13%). Stearic acid (C18:0) was the major SFA while arachidonic acid (C20:4 n−6) was the major PUFA. The season significantly affected the FA profile of V. contectus while no significant difference was determined between seasons with respect to tissue MUFAs levels. A higher level of total SFAs was detected during spring (80.39%) while a higher proportion of MUFAs was detected during the winter (10.13%). The total amounts of PUFAs were highest in winter (21.83%). Overall, V. contectus has nutritional value. However, V. contectus caught in autumn may be nutritionally the most valuable for human consumption due to higher eicosapentaenoic acid 20:5 n−3 and docosahexaenoic acid contents.
AtıfScopus3WoS1OpenAlex4
İncele - MakaleAçık Erişim2023Scopus SJRQ1Evaluation of metal pollution related to human health risk in freshwater snail Viviparus contectus (Millet, 1813) as a potential bioindicator species in Lake Habitat (Turkey)
Kutluyer Kocabaş, Filiz; Göktürk Aksu, Emsiye; Kocabaş, Mehmet
Freshwater mollusks are employed as bioindicators for the assessment of water quality in biomonitoring studies since the water quality of natural resources is crucial for humans. The freshwater snail species known as Viviparus contectus (Viviparidae: Gastropoda) is one that people eat. Here, the levels of heavy metals (Cd, Cr, Pb, As, Zn, and Cu) in water and V. contectus samples were determined. An Inductively Coupled Plasma Atomic Emission Spectrometer (ICP-AES, Spectro Arcos, vertical plasma) was used for the analysing the heavy metal concentrations in water and freshwater snail samples. The results of the current investigation demonstrated that freshwater snails accumulated metals in their water and soft tissues in the following orders: Pb > Cr = Zn = Cu = Cd = As and Zn > Cu > Pb > Cd > As = Cr. Autumn was the time of year when higher amounts of heavy metals (As, Cr, Cu, Zn, and Hg) were found. Pb content in the freshwater snail samples was strongly impacted by seasonal fluctuations (P 0.05). For adults, the EDI (estimated daily intake) values were lower than the TDI (tolerable daily intake) values, and the HI (hazard index) values were below 1. Freshwater snail samples had Zn and Pb levels that were over the FAO/WHO, Turkish Food Codex, JECFA, and EC limit values. Except for Pb, the water study shows mean metal concentrations below the USEPA, Turkish Pollution Control Regulation, and World Health Organisation maximum allowed levels. Aquatic ecosystems were negatively impacted by anthropogenic activities overall, and this study can provide a helpful data set for investigations on metallic contamination in water bodies and biomonitoring in freshwater ecosystems.
AtıfScopus7WoS6OpenAlex6
İncele - MakaleAçık Erişim2023Scopus SJRQ4Single and combined effects of dimethoate and malathion on oxidative stress biomarkers in the non-target freshwater mussel Dreissena polymorpha
Serdar, Osman; Yildirim, Numan; Yildirim, Nuran Cikcikoglu
This study evaluates the single and combined effects of dimethoate (DI) and malathion (MA) on oxidative stress biomarkers in the freshwater mussel Dreissena polymorpha, estimating the potential harm of these pesticides on aquatic ecosystems. Superoxide dismutase (SOD) and catalase (CAT) activities, and glutathione (GSH) and lipid peroxidation (TBARS) levels were determined in D. polymorpha exposed to sublethal concentrations of DI, MA and a combination of the two during 24 and 96 h periods. The results showed that the GSH levels were decreased but the TBARS levels were increased in all the exposure groups after 24 and 96 h compared to the control. It was observed that SOD activity decreased but CAT activity increased in all the DI exposure groups after 24 h compared to the control. At the end of 96 hours, it was observed that CAT and SOD activities increased again in some exposure groups compared to the control. Exposure time also had an effect on biomarkers in different levels. According to the results, the cytotoxicity of DI and MA combination depended on their concentrations. DI or/ and MA, in sub-lethal concentrations, induced oxidative damages in D. polymorpha. Combined exposure of the pesticides can alter their toxicity and may be evidence of increased toxicity and oxidative stress.
AtıfScopus3WoS3OpenAlex2İncele - MakaleAçık Erişim2022Tunceli Uzunçayır Baraj Gölü’ndeki Kababurun (Chondrostoma regium, (Heckel, 1843)) Balıklarının Et Veriminin Belirlenmesi
Yüksel, Fahrettın; Demirol, Ferhat; Kurt Kaya, Gülderen; Gündüz, Fatih
Bu çalışma, Uzunçayır Baraj Gölü’nden avlanan kababurun balığı (Chondrostoma regium, (Heckel, 1843))’nın et verimliliğini belirlemek amacıyla yürütülmüştür. Bu amaçla çalışmada, C. regium türüne ait yaşları I-VIII arasında dağılım gösteren 100 adet balık kullanılmış olup, et verimliliği ile farklı vücut kısımları arasındaki ilişkiler incelenmiştir. İncelenen örneklerde, ortalama yüzgeç ağırlığı, omurga ağırlığı, deri ağırlığı, baş ağırlığı, iç organ ağırlığı ve tüketilebilir kısımların vücut ağırlığına göre yüzde oranları sırasıyla %1,72, %3,57, %7,50, %10,55, %9,94 ve %66,72 olarak belirlenmiştir. Çalışmanın sonunda kababurun örneklerinde en yüksek tüketilebilir et oranının III. yaş grubunda (%67,91), en düşük et oranının ise I. yaş (%62,04) grubunda olduğu belirlenmiştir.
- MakaleAçık Erişim2022Scopus SJRQ2Age- and Sex-Specific Bioaccumulation of Selected Metals in Freshwater Mussel (Unio elangatulus eucirrus Bourguignat, 1860) Populating from Keban Dam Lake (Elazig, Turkey)
Danabaş, Durali; Kutluyer, Filiz; Ural, Mesut; Özçelik, Mehtap; Kocabaş, Mehmet
In aquatic life, environmental chemicals are accumulated by mussels due to their sentinel nature and filter-feeding characteristics. Herein, the present study focused on assessing the concentrations of Cu, Zn, Mg, Mn, Fe, Cd, Pb, Ca, K, and Na levels in freshwater mussels (Unio elangatulus eucirrus) depending on sex and age. For all trace metals, some important differences of bioaccumulations were determined depending on ages and sex. In details, the results indicated that an important age-related accumulation of Mg, Cd, Ca, and K was in females and all trace elements, except Cu, Mg, and K levels in males (p < 0.05). No statistical differences were determined in mean concentrations of Cu, Zn, Mg, and Na. There are statistical differences in Mg, Mn, Fe, and Ca levels between females and males in four aged mussels (p < 0.05). Lead levels were under detectable limits. Overall, metal levels and their toxicity in freshwater mussels should be closely monitored for health of the environment, animals, and humans, since mussels and fish species fed on them are consumed highly in the research region and around.
AtıfScopus5WoS6OpenAlex7İncele - MakaleAçık Erişim2021Scopus SJRQ3Murat Nehri’ndeki Garra rufa (Heckel, 1843)’nın Bazı Populasyon Parametreleri
Yüksel, Fahrettın; Çoban, Mehmet Zülfü; Aslan, Şaban
Bu çalışmada, Murat Nehri’nde yaşayan ve “doktor balık” olarak bilinen Garra rufa (Heckel, 1843)’nın bazı populasyon parametrelerinin belirlenmesi amaçlanmıştır. Araştırmada kullanılan toplam 322 adet balık örneği, serpme ağı ve elektroşoker cihazı kullanılarak, Mart 2016 ile Şubat 2017 tarihleri arasında Murat Nehri’nden temin edilmiştir. Populasyonun I-V yaş grupları arasında dağılım gösterdiği ve dişi/erkek oranının 1:1.24 olduğu tespit edilmiştir. Boyağırlık ilişkisi regresyon analizi ile belirlenmiştir. Buna göre; regresyon katsayısı (b) dişilerde 2.4551 (negatif allometrik büyüme), erkeklerde 2.2039 (negatif allometrik büyüme) ve tüm bireylerde 2.3167 (negatif allometrik büyüme) olarak belirlenmiştir. İncelenen balık örneklerinin total boyları 5.1- 15.5 cm, ağırlıkları ise 3.0-50.6 g arasında değişiklik göstermiştir. Populasyonun genelinde tüm yaş gruplarının kondisyon faktörü değerlerinin ortalaması 1.17 olarak tespit edilmiştir. Populasyonun büyüme parametreleri dişilerde; L∞ = 16.33 cm, K = 0.37 yıl⁻¹, t₀ = -0.18 yıl, W∞ = 42.59 g, erkeklerde; L∞ 15.25 cm, K = 0.43 yıl⁻¹, t₀ = -0.03 yıl, W∞ = 31.37 g ve tüm bireylerde; L∞ = 15.88 cm, K = 0.39 yıl⁻¹, t₀ = -0.13 yıl, W∞ = 36.62 g olarak belirlenmiştir. Büyüme performans indeksi (Ǿ) dişilerde 4.59, erkeklerde 4.61 ve populasyonun genelinde 4.59 olarak hesaplanmıştır.
AtıfOpenAlex3TR Dizin1İncele - MakaleYalnız künye2020Scopus SJRQ3Potential anesthetic properties of bay leaf (Laurus nobilis) essential oil compared with 2-phenoxyethanol on blue dolphin cichlid, cyrtocara moorii
Kizak, Volkan; Can, Erkan; Seyhaneyildiz Can, Şafak
The efficacy of Bay leaf (Laurus nobilis) essential oil (LnEO) as a herbal anesthetic agent was evaluated with 2-Phenoxyethanol (2-PE) in Blue Dolphin Cichlid, Cyrtocara moorii. Fish were exposed to different anesthetic concentrations and the lowest effective concentrations (LECs) were determined according to deep anesthesia (AD<3 min) and full recovery (RF<5 min) times. LnEO showed anesthetic properties, and all applied concentrations of both agents induced AD in C. moorii. The LECs of LnEO and 2-PE for C. moorii were determined as 800 µl L-1 (AD; RF → 183 ± 6.3 s; 191 ± 2.6 s) and 600 µl L-1 (AD; RF → 171 ± 3.2 s; 239 ± 4.9 s), respectively. Significant differences were found between anesthetic agents in terms of deep anesthesia and full recovery times for the same concentrations (p<0.05). Induction and recovery times decreased with increasing in LnEO concentrations. On the other hand, anesthesia times were decreased with increasing of 2-PE concentrations, while recovery times increased. Induction and recovery times for LnEO were significantly dependent on concentrations and positive relationships were recorded between AD and RF, whereas the relationship was negative in 2-PE. Bay leaf essential oil has not been used as an anesthetic agent in fish until now. Our results showed that LnEO was an effective anesthetic agent with some minor side effects on C. moorii.
AtıfScopus2OpenAlex2İncele - MakaleYalnız künye2020Scopus SJRQ2Investigation of antioxidant responses in Gammarus pulex exposed to Bisphenol A
Tatar, Şule; Türkmenoğlu, Yener
One of the most important environmental problems in the world is micro-pollutants. The aim of this study was to investigate the antioxidant responses of Gammarus pulex to Bisphenol A (BPA), an endocrine-disrupting agent. For this purpose, sublethal concentrations of BPA were applied to G. pulex and biochemical responses were studied. Enzymatic antioxidants superoxide dismutase (SOD) and catalase (CAT) activities and nonenzymatic antioxidants glutathione (GSH) and thiobarbituric acid reagents (TBARS) levels in G. pulex were determined in four different groups during 24 and 96 h. Biochemical biomarkers were measured using commercial kits in a microplate reader. When we compared with control, SOD enzyme activity increased in all groups during both administration periods and CAT enzyme activity decreased in all groups. GSH and TBARS levels were increased after 24 and 96 h of application periods in all groups when compared with control. For changes in SOD and CAT activities and GSH, TBARS levels have been determined to be useful as biomarkers against BPA in G. pulex tissues. It has also been proven that G. pulex is an effective bioindicator that shows BPA pollution in water. The different results of biochemical biomarkers can be evaluated as a marker of possible metabolic processes, and the biochemical response of G. pulex can reveal to some extent the environmental consequences of BPA pollution resulting from industrial waters.
AtıfScopus5WoS3OpenAlex7İncele - MakaleAçık Erişim2020Scopus SJRQ3Age and growth of the lessepsian migrant lagocephalus spadiceus (Actinopterygii: Tetraodontiformes: Tetraodontidae) from the gulf of iskenderun, north-eastern mediterranean, turkey
Başusta, Asiye; Başusta, Nuri; Ozcan, Ebru Ifakat; Girgin, Hülya
Background. The population of Lagocephalus spadiceus (Richardson, 1845), one of the Lessepsian species that migrated from the Red Sea to the Mediterranean Sea through the Suez Canal, has been growing rapidly in Turkey in recent years. This situation poses a serious danger to fisheries and human health. There is little information about the biology of this species. The presently reported study permits a greater understanding of the age and growth characteristics of the pufferfish L. spadiceus from the Gulf of Iskenderun, north-eastern Mediterranean. Materials and methods. Samples were captured by commercial bottom trawlers at depths of 24–50 m during 9 trawling operations conducted during the fishing seasons between 2012 and 2013 in the Gulf of Iskenderun, northeastern Mediterranean. Age determinations were carried out using vertebrae. Images of vertebrae suitable for age determination were obtained with a dissecting microscope. The index of the mean percentage error (IMPE) was calculated to assess the precision of the age determinations between two independent readers. Growth parameters for all individuals were then determined by fitting observed and length-at-age data using the von Bertalanffy growth equation. In addition, the condition factor (CF) was determined. Results. A total of 1116 specimens (529 females and 587 males) were sampled, ranging from 6.7 to 34.0 cm in total length and from 4.30 to 557.64 g in weight. The female-to-male ratio was 1:1.1. Age determination was conducted using vertebral band counts. The age of the examined specimens ranged from 0 to 10 years. One female individual was determined to be 17 years of age (45.6 cm and 1269.0 g). The von Bertalanffy growth equations were Lt = 47.21[1 – e–0.116(t+ 2.04)] and Wt = 1296.18 [1 – e–0.116(t+ 2.04)]2.846 for females, Lt = 46.36 [1 – e–0.133(t+ 1.76)] and Wt = 1381.86 [1 – e–0.133(t+ 1.76)]2.817 for males and Lt = 46.90 [1 – e–0.120(t+ 1.97)] and Wt = 1345.67 [1 – e–0.120(t+ 1.97)]2.831 for all individuals. The growth performance index (Ф´) value was calculated as 2.421 for all individuals. The condition factor ranged from 0.890 to 2.768 for females and from 0.899 to 2.767 for males. Conclusions. It is very important to investigate L. spadiceus, an invasive species, in order to prevent its harmful effects on fisheries and human health. As this study is the first study on the age and growth of L. spadiceus in the northeastern Mediterranean, it will significantly contribute to future ecosystem conservation and management strategies.
AtıfScopus6WoS5OpenAlex6İncele - MakaleAçık Erişim2020Scopus SJRQ3Age and growth of the phaeton dragonet, Synchiropus phaeton (Actinopterygii: Perciformes: Callionymidae), from the gulf of iskenderun, north-eastern mediterranean, Turkey
Başusta, Asiye; Ozcan, Ebru İfakat; Başusta, Nuri
Background. Synchiropus phaeton (Günther, 1861) is a sexually dimorphic, benthic species that inhabits mud bottoms. This fish is one of the important by catch species in the trawl fishing. There is no commercial value. But it has ecological importance in this area. The information about the biology of S. phaeton is very limited. This study was conducted to investigate the age and growth relation of phaeton dragonet inhabiting the Gulf of Iskenderun, north-eastern Mediterranean coast of Turkey. Materials and methods. A total of 289 phaeton dragonets were collected as discards during the commercial trawl fishing at the depth range of 100–150 m in the Gulf of Iskenderun, north-eastern Mediterranean. The fish age was determined from sagittal otoliths. The age readings were performed using Leica S8APO microscope and were documented with the Leica Application Suite (Ver. 4.8.0) software. The index of the mean percentage error (IMPE) was calculated to assess the precision of the age determination between two independent readers. Growth parameters for all specimens were subsequently determined by fitting the observed and the length-at-age data using the von Bertalanffy growth equations. Total length–weight relations (LWRs) and the condition factor (CF) were determined. Results. The total length and weight of S. phaeton ranged from 7.0 to 19.0 cm and from 2.01 to 22.0 g, respectively. The age of the studied individuals ranged from 2 to 7 years. The parameters of von Bertalanffy growth fitted to the mean observed total lengths-at age for each sex separately and were estimated as L∞ = 23.358 cm, K = 0.248 year–1, t0 = –0.501 years for females and L∞ = 26.543 cm, K = 0.156 year–1, t0 = –0.662 years for males, respectively. The overall growth performance index (G) value was determined as 3.46 for the combined sexes. The total length– weight relations were determined as W = 0.0121TL2.55, R² = 0.94; 95% confidence intervals of b = 2.395–2.687, t-test P < 0.05 for females and W = 0.0094TL2.64,R2 = 0.93; 95% confidence intervals of b = 2.470–2.803, t-test P < 0.05 for males. The types of growth were found negatively allometric (b < 3). The highest condition factor was found at the age of 2 (0.62), while the lowest was found at the age of 6 (0.26). Conclusions. The presently reported study provides the first data on the age and growth of the S. phaeton that had not been studied previously in the Gulf of Iskenderun, north-eastern Mediterranean of Turkey. This study will contribute significantly to the conservation and management strategies of the species of S. phaeton in the future.
AtıfScopus2WoS2OpenAlex2İncele - MakaleAçık Erişim2019Karasu Nehri’nde (Doğu Anadolu, Türkiye) yaşayan Chondrostoma regium (Heckel, 1843)’un bazı büyüme parametreleri
Serdar, Osman; Ozcan, Ebru Ifakat
Bu çalışma, Karasu Nehri’nin 14 farklı istasyonunda yaşayan kababurun (Chondrostoma regium (Heckel, 1843))’un yaş tayini ve bazı büyüme özelliklerinin araştırılması ile ilgilidir. Bu amaçla, 2014 ve 2016 yılları arasında elektroşokerle toplam 236 C. regium balık örneği (124 dişi ve 112 erkek) yakalandı. Örneklenen C. regium bireylerinin total boy ve ağırlığı sırasıyla 11,0-33,0 cm ile 33,0-324,0 g arasında değiştiği görülmüştür. İncelenen bireylerin yaşlarının 1-7 arasında değiştiği görülmüş ve dişi:erkek oranı 1:0.903 olarak belirlenmiştir. von Bertalanffy büyüme parametreleri tüm bireyler için Lt=40,17[1-e-0,154(t+2,14)]; Wt=495,009[1-e-0,154(t+2,14)]2,50 ve büyüme performans indeks değeri (Ф') ise 2,395 olarak hesaplanmıştır. İncelenen populasyon için boy-ağırlık ilişkileri ise W=0,0503L2,50 (R² = 0,97; b’nin güven aralıkları=2,41-2,70; p<0,001) şeklinde bulunmuştur. Bu değerlere göre, C. regium’un büyüme tipinin negatif allometrik özellik gösterdiği görülmüştür.
AtıfOpenAlex3TR Dizin1İncele - MakaleAçık Erişim2019Gölova Baraj Gölü (Sivas)’nde Yaşayan Pullu Sazan (Cyprinus carpio Linnaeus, 1758)’ın Bazı Büyüme Özellikleri ve Et Veriminin İncelenmesi
Yüngül, Mücahit; Gokhan, Haci Bayram; Dörücü, Mustafa
Bu çalışmada, Temmuz 2017 - Mart 2018 tarihleri arasında Gölova Baraj Gölü’nden yakalanan 82 adet pullu sazan (Cyprinus carpio Linnaeus, 1758)’ın cinsiyet ve yaş gruplarına göre bazı büyüme özellikleri ile et verimliliği araştırılmıştır. Örneklerin % 32.93’ünü dişi, % 67.07’sini erkek bireyler oluşturmuştur. Dişi ve erkek bireyler II-V arası yaşlarda tespit edilmiştir. Ortalama total boy ve ağırlığın dişilerde 40.99±1.07 cm ve 1001.27±82.97 g; erkeklerde 37.27±0.41 cm ve 734.34±30.69 g; tüm bireylerde 38.49±0.49 cm ve 822.23±36.65 g olduğu saptanmıştır. Tüm örnekler için boy-ağırlık ilişkisi W=0.0151TL2.9743 (R2=0.8796) ve ortalama kondisyon faktörü 1.385±0.018 olarak belirlenmiştir. C. carpio’da et verimliliği ile çeşitli vücut kısımları arasındaki ilişkiler incelendiğinde; fileto ve karkas ağırlıklarının ortalama et verimleri sırasıyla dişilerde % 47.59±0.71 ve % 59.19±0.82; erkeklerde % 49.80±0.32 ve % 60.67±0.34; tüm bireylerde % 49.07±0.34 ve % 60.18±0.36 olarak saptanmıştır. Tüketilmeyen vücut kısımlarından iç organ, baş, yüzgeç, deri ve kemik ağırlıklarının vücut ağırlığına göre ortalama oranları da tüm bireyler için sırasıyla % 12.98±0.39, % 22.32±0.23, % 4.51±0.79, % 8.49±0.25 ve % 2.63±0.04 olarak belirlenmiştir.
AtıfOpenAlex2TR Dizin2İncele - MakaleAçık Erişim2019Age and some growth parameters of Squalius cephalus (Linnaeus, 1758) inhabiting Karasu River (East Anatolia, Turkey)
Özcan, Ebru Ifakat; Serdar, Osman
The present study was carried out concerns a research of the age determination and some growth parameters of chub, Squalius cephalus (Linnaeus, 1758) living in 14 different station from Karasu River (East Anatolia, Turkey). For this purpose, a total of 196 fish specimen (100 females and 96 males) of S.cephalus were captured between 2014 and 2016 by electroshocker. Female/male ratio was 1/0.96. Minimum-maximum length and weight of captured fishes were determined as 7.6-23.9 cm and 4.8-198.2 g, respectively. The age groups were determined between 0 and 6. The parameters of von Bertalanffy growth function estimated as L-infinity=31.98 cm, k=0.136 year(-1), t(0)=-1.40 year for all individuals. The growth performance index (phi>) value was computed as 2.143. The length and weight relationships W=0.0060L(3.27) (R-2=0.98) for all individuals. Significant statistical differences in condition factors between age groups and sexes were not found (P > 0.05, t-test).
AtıfWoS1OpenAlex3TR Dizin5İncele - MakaleAçık Erişim2018Reproduction Biology of Capoeta trutta (Heckel, 1843) in the Uzuncayir Dam Lake
Gündüz, Fatih; Çoban, M. Zulfu; Yüksel, Fahrettin; Demirol, Ferhat; Alpaslan, Kenan; Alp, Ahmet
In the study, on the purpose of contribute to sustainable fisheries strategies. the reproductive characteristics of Capoeta trutta in Uzuncayir Dam Lake were investigated. The fish samples were caught from Uzuncayir .Dam Lake by using gill nets with different mesh sizes (36-100 mm) between January - December 2013. During research period, a total of 385 C t mita samples that were caught from Uzuncayir Dam Lake yielded 167 female (43.00%) and 218 male (57.00%) with an age composition of population varied from I to XII age groups. GSI values reached a maximum in May and rapidly declined after that month, and it can be concluded that C trutta in Uzuncayir Dam Lake deposites its sperms and eggs between May-July. Egg size varied between 0.30-1.07 mm in dimeter. The relationships between fecundity-total length and fecundity-total weight were determined respectively as r= 29.708*TL-593.36 (N= 35. r= 0.27), F = 9.6148*W+5488.3 (N= 35. r= 0.38). The fecundity of C trutta individuals changed from 1362 to 15428 according to age groups. Sexual maturity length was determined as 20.77 cm and 19.35 cm for female and males. respectively.
AtıfWoS1OpenAlex3İncele - MakaleAçık Erişim2018Scopus SJRQ2A research on coliform bacteria in the golden Horn Estuary (Sea of Marmara, Turkey)
Karabas, Necati; Tas, Seyfettin; Erguven, Gokhan Onder; Bayhan, Hurrem
Spatio-temporal variation of the total and fecal coliform groups as bacteriological indicators in the marine environment was investigated in surface water of the Golden Horn Estuary in monthly intervals between June 2012 and May 2013. Temperature, salinity, Secchi depth, pH, dissolved oxygen and oxygen saturation were measured at 10 stations simultaneously with bacteriological analyses. Highest total coliform counts in surface water was 940×103 CFU/100 ml at the Alibeykoy Creek in November and highest fecal coliform was 178×103 CFU/100 ml at the same area in October. The lowest coliform counts were observed during summer, while the highest counts were in autumn. During rainy days, some domestic wastewater overflowing from sewerages are discharged to the estuary, which those water adversely affect water quality. The total and fecal coliform counts in surface water increased gradually from the lower to upper section of the estuary. Although the Black Sea water pumping from the Strait of Istanbul to the Golden Horn by Kagithane Creek is an important factor in the decrease of pollution and better water quality, there are still some runoff materials including uncontrolled discharges particularly in the Alibeykoy Creek. The results of this study showed that that the bacteriological pollution increased due to municipal wastewater resulting from overflow after the precipitation and the surrounding waters of the Golden Horn basin mix with surface waters. Thus, the most important factor in order to decrease the bacteriological pollution is to provide a full control of the surface discharges.
AtıfScopus10WoS10OpenAlex13İncele - MakaleAçık Erişim2018Scopus SJRQ3Preliminary study on age, growth and reproduction of mustelus mustelus (Elasmobranchii: Carcharhiniformes: Triakidae) inhabiting the gulf of Iskenderun, north-eastern mediterranean sea
Ozcan, Ebru Ifakat; Başusta, Nuri
Background. Shark populations within the eastern Mediterranean are declining due to overfishing. Unfortunately, our knowledge on the biology of sharks and specifically dogfishes within eastern Mediterranean is extremely limited due to the lack of landings. Mustelus mustelus (Linnaeus, 1758) is one of such deficiently known cartilaginous fishes and the relevant information on its age and growth in the eastern Mediterranean is missing. The understanding of growth and reproductive behaviour is important for management and conservation of this species. The presently reported study was intended to determine age, growth, and some reproductive parameters of Mustelus mustelus collected in the Gulf of Iskenderun, the north-eastern Mediterranean Sea. Materials and methods. In this study, a total of 155 Mustelus mustelus were caught in the north-eastern Mediterranean Sea between March 2012 and October 2015. Fish age was determined based on band counts of sectioned vertebrae. The periodicity of band pair formation was examined using the marginal increment analysis. Growth parameters for all specimens were then determined by fitting the observed and the length-at-age data using the von Bertalanffy Growth Equation. The size and age at which 50% of both sexes reached maturity was estimated by a logistic model for maximum likelihood process and the gonadosomatic index was determined. Results. The total length and weight of the specimens examined ranged from 44.3 to 162.6 cm and from 241.3 to 12 060 g, respectively. The presently reported study provides new maximum lengths (162.6 cm) for M. mustelus from the north-eastern Mediterranean. The fish studied represented age groups from 0 through 25. The observed sex ratio was 1 ÷ 1.04 (females ÷ males). Von Bertalanffy growth parameters were estimated to be L∞ = 195.13 cm, W∞ = 20 060 g, K = 0.06, and t0 = −4.27 for all specimens. Length–weight relation was found to be W = 0.0027L3.0054 (R2 = 0.98) and 95% confidence intervals of b = 2.936–3.075, t-test P < 0.05. All studied specimens of M. mustelus represented isometric growth (b = 3). Condition factor ranged from 0.148 to 2.87 for females and from 0.103 to 1.024 for males. The length at 50% maturity and the age at 50% maturity were 109 cm and 8 in females and 92 cm and 7 in males, respectively. It was observed that mean GSI values were low in September and July, reaching a maximum in January to February. Conclusion. The results of this study could give useful insight for management plans and conservation of M. mustelus in the Mediterranean coast of Turkey.
AtıfScopus13WoS10OpenAlex12İncele - MakaleYalnız künye2018Scopus SJRQ2The using of Gammarus pulex as a biomonitor in ecological risk assessment of secondary effluent from municipal wastewater treatment plant in Tunceli, Turkey
Tatar, Sule; Cikcikoglu Yildirim, Nuran; Serdar, Osman; Yildirim, Numan; Ogedey, Aysenur
The objectives of this research are the assessment of secondary effluents (SEs) quality by evaluating chemical parameters and biomarkers. For this purpose, MDA and GSH levels were determined by spectrofotometer. SOD, CAT, and GPX activities were determined by using ELISA kit in the groups of control and the groups exposed to SE. The level of MDA and the activities of SOD in Gammarus pulex vary depending on the exposure time. GSH levels and GSH-PX activities increased in G. pulex exposed to the effluent compared to the control during 24 h and 96 h. CAT activities were in SE group were found lower than the control in G. pulex during 24 h and 96 h. Current experimental results show that SOD, CAT, GPX activities, and GSH and MDA levels in G. pulex are sensitive and appropriate responses for assess the effects of anthropogenic contaminants on the aquatic ecosystems, particularly effluent complex mixtures.
AtıfScopus19WoS19OpenAlex22İncele - MakaleAçık Erişim2018Scopus SJRQ2Effect of brine and dry salting methods on the physicochemical and microbial quality of chub (Squalius cephalus Linnaeus, 1758)
Bonoco, Arzu; Kurt Kaya, Gülderen
The present study, looks at the physicochemical and microbiological quality changes that occur due to different salting techniques (20% salt concentration) of chub (Squalius cephalus) and when stored in 4 ± 0.5 °C. Samples of fish from each group was taken on the 15, 30, 45, 60, 90 and 120th day and was analyzed for nutritional component (crude protein, lipid, moisture, crude ash), pH value, salt content and the microbial flora (total mesophilic aerobic bacteria count, total coliform, total psychrophilic aerobic bacteria count, yeast and mould). Ot was determined that crude protein, lipid, crude ash and salt amounts in the group where dry salting method was applied were higher than the group where brine salting occurred, in addition protein and lipid values decreased as storage period was longer (P < 0.05). Ot was determined that there is an increase in total aerobic mesophilic, psycrophile bacteria and enumeration of yeast and mould as storage period increased, while coliform bacteria decreased (P < 0.05).
AtıfScopus21WoS15OpenAlex30İncele - MakaleAçık Erişim2018Scopus SJRQ1The investigation of the shelf life at 2 ± 1 °C of Luciobarbus esocinus fillets packaged with films prepared with the addition of different essential oils and chitosan
Karaton Kuzgun, Nermin; Gürel İnanlı, Ayşe
In this study, the chemical, microbiological and sensory changes during storage at 2 ± 1 °C of Luciobarbus esocinus fillets coated with edible films prepared with chitosan incorporation of thyme, clove, rosemary essential oils were examined. To create the experimental samples, a total of six groups of L. esocinus fillets coated with different edible films (normal, vacuum-packed, chitosan, chitosan with added thyme oil, chitosan with added clove oil, and chitosan with added rosemary) were used. The food composition of the fillets and experimental samples were determined after they had been coated with edible films. The results of analysis showed that, the preservation period of fresh fillets ended on day 12th, that of vacuum-packed fillets on day 15th, that of fillets coated with chitosan incorporation of rosemary on day 27th, that of fillets coated with chitosan incorporation of thyme and chitosan incorporation of cloves on day 30th. In comparison with the control group, fish spoilage was significantly delayed in samples coated with chitosan incorporation of thyme and chitosan incorporation of cloves (p < 0.05). The lowest bacterial growth, values of PV, TBA and TVB-N were obtained in fish samples coated with thyme + chitosan and cloves + chitosan. In terms of the general acceptability of the fish, as determined by qualified panelists, it was determined that the highest score was given to the experimental group to which essential oil of clove had been applied.
AtıfScopus16WoS12OpenAlex17İncele
