Sürdürülebilir Kalkınma Amaçları
Yayınlar
- MakaleYalnız künye2026Scopus SJRQ3Characteristics of the growth rate, fatty acid profile, and shell content of the freshwater snail Viviparus contectus (Millet, 1813)
Kocabaş, Filiz Kutluyer; Kizak, Volkan; Özçiçek, Esin; Kocabaş, Mehmet; Yilmaz, Ökkeş
Freshwater snails are a nutritious food source, providing vital amino acids, minerals, and protein with low lipid levels. Hence, the adaptation ability, growth rate, fatty acid (FA) profile, and shell content of Viviparus contectus were determined. Biometric measurements were recorded for 6 months. Over the 6-month cultivation period, specific growth rates were recorded as 0.32% · day-1 for shell length and 0.92% · day-1 for body weight. The FA profile of the freshwater snail included a total of 32 compounds with saturated, monounsaturated, and polyunsaturated FAs represented by 13, 10, and 9 types, respectively. Monounsaturated fatty acids (MUFAs) exhibited the highest concentration, followed by saturated fatty acids (SFAs) s at 35.14% and polyunsaturated fatty acids (PUFAs) at 14.57%. Stearic acid (C18:0), erucic acid (C22:1 n-9), and arachidonic acid (C20:4 n-6) were determined as the most abundant FAs within the saturated, monounsaturated, and polyunsaturated FAs classes, respectively. The energy-dispersive X-ray spectroscopy spectra analysis revealed that the shell powder composition consisted of the elements, such as carbon, oxygen, calcium, iron, manganese, and silicium. Overall, V. contectus showed a clear increase in growth over the cultivation period, and future studies are needed to obtain the best culture conditions and intensive production of the species.
- MakaleAçık Erişim2026Scopus SJRQ4INTEGRATED BIOLOGICAL TREATMENT AND ELECTROCOAGULATION FOR SLAUGHTERHOUSE WASTEWATER: A NOVEL APPROACH USING FRESHWATER SNAILS (Viviparus contactus, Planorbis rubrum, Melanoides tuberculata)
Öğedey, Ayşenur; Kocabaş, Filiz Kutluyer; Kizak, Volkan; Kocabaş, Mehmet; Benzer, Fulya; Erişir, Mine; Öğedey, Hayrullah
As a potential pollution source, slaughterhouse wastewater (SWW) with development of the meat production and processing sector is a threat in the world. Therefore, the determination of economical, favourable, cost-effective and proper treatment method is crucial for sustainable environmental protection. This study focused on the performance and efficiency of a two-stage process combining biological treatment (BT) with freshwater snails and electrocoagulation (EC) of SWW. Viviparus contectus, Planorbis rubrum, Melanoides tuberculata were used in primary treatment while secondary treatment was realized with EC process. The EC of SWW was performed for reducing both turbidity and chemical oxygen demand (COD) concentration to levels compliant with direct-discharge regulations. In addition, the stirring speed, current density, initial pH and reaction time were assessed for evaluation the optimum EC condition. Oxidative stress biomarkers and some antioxidants were assessed in freshwater snails exposed to SWW after 24 and 96 h. The best removal efficiencies of COD (91.43%) and turbidity (92.42%) were obtained at pH 5 and 20 min of operational time by P. rubrum. Notably, MDA (Malondialdehyde) was highest level in M. tuberculata compared to V. contectus and P. rubrum. Overall, removing organic and inorganic pollutants from SWW could be provided with the hybrid process BT/EC as a combining approach.
- MakaleAçık Erişim2025Kafur (Cinnamomum camphora) Esansiyel Yağının Farklı Su Sıcaklıklarında Japon Balıkları Üzerindeki Anestezik Etkinliği
Kizak, Volkan; Akyüz, Nurettin
Bu çalışmada, Japon balıklarında kafur esansiyel yağının farklı su sıcaklıklarında anestezik etkilerinin incelenmesi ve anestezik konsantrasyonu ile su sıcaklığının süre üzerine birleşik etkisinin incelenmesi amaçlanmıştır. Bütün su sıcaklıklarında derin anestezi bakımından en etkili konsantrasyon 300 µl/lt olurken, tam iyileşme dikkate alındığında en optimal konsantrasyon 250 µl/lt olmuştur. Anestezik madde kon-santrasyonu arttıkça derin anestezi süreleri kısalmış, tam iyileşme süreleri ise uzamıştır. Yüksek su sıcaklıklarına kıyasla düşük su sıcaklıklarında anestezi ve iyileşme süreleri uzun kaydedilmiştir. Derin anestezi ve tam iyileşme süreleri arasında 14°C su sıcaklığında zayıf negatif ilişki, 18°C su sıcaklığında kuvvetli negatif ilişki ve 22°C su sıcaklığında negatif ilişki bulunmuştur. Derin anestezi sü-releri ve kon-santrasyonlar arasında tüm su sıcaklıklarında kuvvetli negatif bir ilişki saptanırken, tam iyileşme süreleri ve konsantrasyonlar arasında kuvvetli pozitif bir ilişki tespit edilmiştir. Konsantrasyon ve su sıcaklığının süre üzerine birleşik etkisinin de olduğu saptanmıştır. Sonuç olarak, kafur esansiyel yağı Japon balıklarında üç farklı su sıcaklığında etkili bir anestezik maddedir.
- MakaleAçık Erişim2023Anaesthetic Effects of Rosewood (Aniba rosaeodora) Essential Oil and 2-phenoxyethanol on Goldfish (Carassius auratus) at Different Water Temperatures
Şahin, Barış; Kizak, Volkan
In this study, it was aimed to investigate the anesthetic effects of rosewood essential oil and 2- phenoxyethanol in goldfish at different water temperatures. Anesthetic trials were carried out at water temperatures of 14°C and 20°C. Concentrations of 250, 300 and 350 μl·L-1 for rosewood essential oil and 600, 700 and 800 μl·L-1 for 2-phenoxyethanol were tested. The ideal rosewood essential oil concentration was determined as 300 μl·L-1 at 14°C and 250 μl·L-1 at 20°C. The ideal concentration for 2-phenoxyethanol was determined to be 800 μl·L-1 at both water temperatures. Higher concentrations of rosewood essential oil and 2-phenoxyethanol caused shorter induction times and prolonged recovery times. Concentrations of anesthetic agents were negatively correlated with induction times and positively correlated with recovery times. A weak negative relationship was found between deep anesthesia and full recovery durations at 14ºC and a negative relationship at 20ºC for rosewood essential oil. A negative relationship was detected between deep anesthesia and full recovery times in 2-phenoxyethanol at 14ºC and 20ºC. There is a strong negative relationship between rosewood essential oil deep anesthesia times and rosewood essential oil concentrations at 14ºC and 20ºC, and a similar relationship was found for 2-phenoxyethanol. However, a strong positive relationship was detected between full recovery times and concentrations of both anesthetic agents at different water temperatures. As a result of increasing water temperature, anesthesia and recovery times were observed to be shortened for both anesthetic substances. The interaction of water temperature and anesthetic concentration was found to be important in the induction and recovery durations for rosewood essential oil and 2-phenoxyethanol.
AtıfOpenAlex1TR Dizin1
İncele - 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.
AtıfScopus2OpenAlex2
İncele - MakaleYalnız künye2019Scopus SJRQ4Water quality changes and goldfish growth (carassius auratus) in microgreen aquaponic and recirculating systems
Kizak, Volkan; Kapaligoz, Serdar
Goldfish (Carassius auratus) growth was studied comparatively in microgreen aquaponic (APS) and sump filter systems (SFS), and the ef fects of these two different filter systems on water quality parameters were investigated. Arugula (Eruca vesicaria) was used in APS and produced as microgreens. NH3-N, NO2-N, NO3-N, POj and NH4 were measured at specific periods for 60 days. No statistical differences were found between both systems in terms of food conversion ratio (FCR), specific growth rate (SGR), survival and mean body weight of goldfish. In the beginning of the experi-ment, water pH level was around 8.5 while trend towards declining at the end of period. Nitrification process was successful in both systems, and declin ing pH towards from basic medium to approaching neutral levels made positive contribution to perfor mance of nitrifying bacteria. Although there was a significant decrease in the level of NH4, the level of NO3-N increased continously after the 30,h day in APS. According to these results, arugula micro-greens used mostly NH4 instead of NO3-N in higher pH level. Goldfish-arugula microgreen aquaponic system is similar with SFS in terms of keeping water quality in optimal conditions and any adverse effect on goldfish growth and welfare was not ob served in both systems. Although in high pH, it was also seen that arugula seedlings can be produced efficiently as microgreens.
AtıfScopus7İncele - MakaleYalnız künye2018İstanbul Avrupa Yakasında Bulunan Akvaryum İşletmelerinin Genel Profilinin Belirlenmesi
Kizak, Volkan; Büyüktaş, Erdal
Bu çalışmada, İstanbul ilinin Avrupa Yakası bölgesinde mevcut olan akvaryum işletmelerinin genelprofilinin çıkarılması ve elde edilen veriler doğrultusunda işletmelerin faaliyet özellikleri, sorunları ve talepleriortaya konmaya çalışılmıştır. İstanbul Ticaret Odası kayıtlarına göre İstanbul Avrupa yakasında 134 adetişletme bulunmaktadır. Bunların 65 adedi sektör dışı faaliyet göstermekte ya da faal durumda değildir. Sektöriçinde faaliyet gösteren 69 işletmenin 52 tanesiyle anket çalışması yapılmış ve bunlara göre analizlerhazırlanmıştır. İşletmelerde yapılan anket çalışmasına göre; işletmeci ya da çalışanların %48’inin 25-35 yaşaralığında olduğu, %66’sının ortaöğretim (lise) mezunu olduğu, işletmeler arasında en eski kuruluşun 1953yılında hizmete başladığı, en yenisinin ise 2014 yılı içerisinde faaliyet göstermeye başladığı saptanmıştır.İşletmelerin dönemsel yoğunlukları incelendiğinde %72’sinin kış mevsiminde satışlarının artış gösterdiğigörülmüştür. Analizler sonucunda işletmelerin %52’sinin satış yaptıkları ürünleri toptancılardan alırken,%24’lük bir bölümünün de hem toptancılardan hem de yetiştiricilik yoluyla temin ettiği belirlenmiştir.İşletmelerin giderlerine bakıldığında, %42 ile en büyük gider kaynağının elektrik olduğu, bunu %40 ile kiragiderinin takip ettiği kaydedilmiştir. Araştırma sonucunda sektörün içinde bulunduğu zorluklar ve bunlarayönelik çözüm önerileri sıralanmıştır. Sektörün sorunlarını çözebilmesi ve gelişebilmesi için yasal boşluklarıngiderilmesi önemli olup akvaryumculuk sektörünün ilgili akademik çevre ve kamu kuruluşlarıyla birlikteçalışmasının büyük faydalar getireceği kanısına varılmıştır.
AtıfTR Dizin5İncele - MakaleYalnız künye2018Scopus SJRQ1Anesthetic potential of geranium (Pelargonium graveolens) oil for two cichlid species, Sciaenochromis fryeri and Labidochromis caeruleus
Can, Erkan; Kizak, Volkan; Seyhaneyildiz Can, Şafak; Özçiçek, Esin
The anesthetic potential of geranium oil (Pelargonium graveolens L.) was evaluated in two freshwater aquarium fish species, the electric blue hap (Sciaenochromis fryeri, 2.00 ± 0.61 g) and blue streak hap (Labidochromis caeruleus, 2.31 ± 0.52 g). Fish were exposed to nine concentrations of anesthetic (25, 50, 75, 100, 125, 150, 200, 250, 300 μl L−1). The induction time generally decreased significantly with increasing concentration of geranium oil for both of the fish species. The recovery time increased with the enhancing geranium oil concentration. Deep anesthesia took between 61.19 ± 7.25 s and 165.43 ± 6.78 s for S. fryeri and between 73.32 ± 8.92 s and 171.12 ± 10.74 s for L. caeruleus. Recovery occurred after 96 ± 6.87 s (L. caeruleus), with the longest being 291.45 ± 8.31 s (S. fryeri). The minimal effective concentration was 75 μl L−1 for deep anesthesia for both two species, and 50 μl L−1 was found as the minimal sedative concentration at the stage of loss of equilibrium. These findings suggested that geranium oil is a new potential anesthetic for two ornamental fish species.
AtıfScopus33WoS29OpenAlex34
İncele - MakaleYalnız künye2018Scopus SJRQ1Evaluation of anesthetic potential of rosewood (Aniba rosaeodora) oil as a new anesthetic agent for goldfish (Carassius auratus)
Kizak, Volkan; Can, Erkan; Danabaş, Durali; Can, Şafak Seyhaneyildiz
The aim of this research was to investigate the efficacy of rosewood (Aniba rosaeodora) essential oil (EO) as a new herbal anesthetic compared with camphor (Cinnamomum camphora) EO and commonly used chemical agent 2-phenoxyethanol (2-PE) on goldfish (Carassius auratus). The anesthetic efficacies of these herbal EOs and 2-PE were evaluated in goldfish with mean body weight of 7.36 ± 0.77 g. Fish were exposed to each anesthetic concentrations and the lowest effective concentrations (LECs) were established according to deep anesthesia (AD < 3 min) and full recovery (RF < 5 min) times. RD and CP showed anesthetic characteristics and induced AD. The LECs for each anesthetic were established at 250 μl L−1 for RD (AD; RF → 171 ± 2.28 s; 297 ± 7.69 s), 250 μl L−1 for CP (AD; RF → 129 ± 4.18 s; 291 ± 2.81 s) and 700 μl L−1 for 2-PE (AD; RF → 177 ± 2.35 s; 214 ± 4.93 s). At concentrations of 50, 100, 150, 200 μl L−1 for RD, 50, 100, 150 μl L−1 for CP and 400, 500 μl L−1 for 2-PE failed to induce AD in goldfish. There were significantly differences found among RD, CP and 2-PE concentrations in terms of induction and recovery times (p < 0.05). The fastest AD and RF were obtained by 300 μl L−1 CP (120 ± 1.94 s) and 600 μl L−1 2-PE (190 ± 4.34 s), respectively. Fish exposed to 300 μl L−1 RD and 800 μl L−1 2-PE took slightly longer to achieve AD than 300 μl L−1 CP. Induction and recovery times for EOs and 2-PE were significantly dependent on concentrations. Negative relationships was recorded between AD and RF for all anesthetics. No mortality or adverse effects occurred and fish stayed calm during trials. Results showed that RD was found to be an effective anesthetic as well as CP for goldfish and can be used at least 3-fold lower concentrations than 2-PE. In conclusion, rosewood (Aniba rosaeodora) EO, as a new potential anesthetic for fish, proved to be an effective natural agent resulting in rapid induction and recovery.
AtıfScopus25WoS20OpenAlex23İncele - MakaleYalnız künye2018Scopus SJRQ3Anesthetic efficacy of cymbopogon citratus essential oil as a herbal agent in two ornamental fish species
Kizak, Volkan; Can, Erkan; Can, Şafak Seyhaneyildiz; Özçiçek, Esin
The efficacy of Cymbopogon citratus essential oil (CcEO) as a herbal anesthetic agent was evaluated for two ornamental fish species, Sciaenochromis fryeri and Labidochromis caeruleus. Fish were exposed to various essential oil concentrations and the lowest effective concentrations were determined according to deep anesthesia (AD<3 min) and full recovery (RF<10 min) times. CcEO showed anesthetic traits and induced AD in S. fryeri and L. caeruleus. The lowest effective concentrations was 200 µl/L for S. fryeri (AD; RF → 122 ± 1.8 s; 638 ± 8.9 s) and 200 µl/L for L. caeruleus (AD; RF → 139 ± 6.9 s; 625 ± 11.1 s). At concentration of 25 µl/L C. citratus essential oil did not induce AD in both of ornamental fish species. No significant differences were found between fish species in terms of induction and recovery times for same concentrations excluding AD time of 200 µl/L concentration. Although the fastest AD were obtained by 300 µl/L, recovery times were prolonged and fish did not full recover in 20 min. Induction and recovery times for CcEO were significantly dependent on concentrations and negative relationships were recorded between AD and RF. Neither mortality nor adverse effects were observed on two fish species. As a result, CcEO showed anesthetic properties for S. fryeri and L. caeruleus.
AtıfScopus8İncele - MakaleYalnız künye2017Scopus SJRQ3The efficacy of chamomile (Matricaria chamomilla) oil as a promising anaesthetic agent for two freshwater aquarium fish species
Can, Erkan; Kizak, Volkan; Özçiçek, Esin; Seyhaneyildiz Can, Şafak
The efficacy of anesthetic chamomile oil (from Matricaria chamomilla L.) was evaluated in two freshwater aquarium fish species, Electric Blue Hap (Sciaenochromis fryeri) and Yellow Princess (Labidochromis caeruleus). Fish were exposed to ten concentrations of anesthetic (0.1, 0.2, 0.3, 0.4, 0.5, 0.6, 0.7, 0.8, 0.9 and 1.0 ml/L). The optimal concentrations identified as 0.6 ml/L for deep anesthesia (A5) for both two species. The minimal sedative concentration at the stage of loss of equilibrium (A3) was found to be 0.3 ml/L. The induction time generally decreased significantly with increasing concentrations of chamomile oil for all treatment groups. Recovery time tended to increase with increased chamomile oil at concentrations lower than 0.7 ml/L, but after this concentration it decreased. Chamomile oil proved to be effective as an anesthetic for both ornamental fish species. These findings suggest that chamomile oil is a promising anesthetic agent for aquaculture. However, further studies should be focused on species based investigations on the effect of temperature, transfer of fish, and their effect on antioxidant and oxidant status, in order to gather further information.
AtıfScopus10İncele - MakaleYalnız künye2016Scopus SJRQ3Production Optimisation of a Land-Based Trout Farm and the Reduction of its Environmental Effects
Guner, Yusuf; Kizak, Volkan; Saygi, Hulya; Turan, Gamze; Tekogul, Hatice; Karacalar, Ulviye; Gulec, Fatih; Hekimoglu, Muge
In this study, certain water quality parameters (water temperature, dissolved oxygen (DO), pH, total inorganic nitrogen (TIN), phosphate (PO4), nitrite (NO2), nitrate (NO3), ammonium (NH4), and (BOD5) in the effluents and the efficiency of the treatment systems for eliminating wastes at a commercial trout farm with a capacity of 10 tons/year in Izmir (Kemalpasa) were examined. The DO, temperature, pH, TIN, PO4, NO2, NO3, and BOD5 measured, were different in the outlet waters when compared with the inlet waters (p<0.05). The settling basin did not reduce the TIN and PO4, on the contrary, it caused an increase in the nitrogen (N) up to 19.9% and phosphorus (P) up to 20.30%, while the wetlands reduced the N, P, and BOD5 up to 53.2%, 58.2%, and 36.5%, respectively (p<0.05). According to the chemical and biological methods, the averages of the TIN and P loads for one tone of cultured trout without treatment were estimated to be were 80 kg and 7 kg, respectively. The annual TIN load of this trout farm was estimated to be 21.3 kg while the TP load was 2.9 kg for one tone of cultured trout when the treatment efficiency was taken into account. The microbiological analyses conducted with the effluent waters showed that the rate of aerobic mesophilic bacteria was found to be high in the summer but low in the winter. It was also detected that the coliform group bacteria were present in the environment in the summer while their occurence was with-in standards in the winter. Interactions of the 9 water quality parameters were identified through the linear regression analysis in order to reduce the environmental effects of the facility DO=28.296 - (0.248 x BOD5)- (2.948 x pH) + (0.189 x temperature) + (0.851 x inlet water) + (0.163 x winter) (R-2=0.912). According to this model, the DO values were increased by the temperature, inlet water and the winter season while reduced by the BOD5 and pH. The dissolved oxygen content in the wetland outlet water was measured as being high because of the nutrient and temperature rises which boosted photosyntesis. It was concluded that using mechanical settling methods were inadequate to minimise the nutrients released into the receiving water body so wetlands should be constructed in such a way as to receive the flow of effluents from the trout farms. As a result the quality of water used by the facility has no adverse impact on the aquaculture and environmental ecosystem.
AtıfWoS1OpenAlex1İncele - MakaleAçık Erişim2016Scopus SJRQ3Spawning and Larval Rearing in Hybrid Striped Bass (Morone chrysops ♀ X Morone saxatilis ♂) in Turkey
Guner, Yusuf; Kizak, Volkan; Altunok, Muhammet; Celik, Ihsan
This study is the first spawning and larval rearing of the F-1 hybrid striped bass (Morone chrysops female X M. saxatilis male) grown in culture conditions in Turkey. The F-1 Hybrid striped bass was fed with commercial pellet feed in floating net cages. They reached the sexual maturity at two years old. Female brood fish were given 30 mu g/kg of LHRH-a (Lutenizing hormone releasing hormone analogue) and male fish given 10 mu g/kg; of CHP(Dried carp pituitary), 4 mg/kg was used for the female and half that amount for the male for induced breeding. The fish injected LHRHa were successfully induced to both strip spawning and tank spawning by a single hormone injection. However, fish injected CPH and saline, untreated control did not spawn. Latency period was found to be 20.41 +/- 0.91 hour. In term of fertilization rate, larval deformity rate no significant difference was found between tank spawning and strip spawning (p>0.05). Fertilization rates ranged from 56.3% to 85.4% and hatch rates were between 0.99% and 46.88%, whereas the level of larval deformities ranged between 81.25% and 100%. Hatched larvae were placed into 400-liter rectangular tanks with water discharge of 4 liter/minute at a stocking density of 30 larvae/liter. After larvae hatching, they were given artemia nauplii for 5-19 days. Trout granule feed (300-500 micron) also started to be given in addition to artemia nauplii afterwards. Granule feed was started eating completely 24 th days. The larvae obtained from a single hatch in the production season reached 2.87 cm length in 32 days with 2.7% survival rate. Of this study was terminated due to white spot disease (Ichtyophthirius multifilis) arising from sudden change in water temperature. The F-2 progenies were not deemed to be available for aquaculture due to poor fertilization, poor hatching, low survival rate and high deformity rate. For the progenies of the hybrid striped bass that grow in natural water, it was suggested that their ecology in waters in Turkey be first studied and brought into aquaculture afterwards.
- MakaleAçık Erişim2014Scopus SJRQ3First record of F2 hybrid striped bass (Morone chrysops ♀ x Morone saxatilis ♂ x Morone chrysops ♀ x Morone saxatilis ♂) in Kemer Dam Lake
Kizak, Volkan; Güsner, Yusuf
The morphometric and meristic characters of 2 F-2 hybrid striped bass (M. chrysops female x M. saxatilis male x M. chrysops female x M. saxatilis male) from the family Moronidae are described. Two specimens were caught from Kemer Dam Lake. The body of the F-2 hybrid striped bass was elongated, moderately compressed, and scaly. Dorsal surface and sides were silver and black to olive-gray, and the abdomen was white in color. Four or 5 longitudinal broken stripes ran above the lateral line to the caudal fin. The stripes were less visible behind the pectoral fins and below the lateral line. The bodies of the F-2 specimens were deeper than 1/4 the fork length. The 2 dorsal fins were separated entirely. The first dorsal fin had 8-9 spines, and the second dorsal fin had a spine and 13-14 soft rays. The caudal fin was slightly forked. The anal fin had 3 spines with 12-14 soft rays. One tooth patch was present on the anterior of the tongue. According to our results, the fish were F-2 hybrid striped bass offspring of F-1 hybrid striped bass, which can reproduce naturally in Turkey. Morphological criteria showed that the F-2 hybrids tended to resemble white bass (M. chrysops).
AtıfWoS4OpenAlex3İncele - MakaleYalnız künye2014Scopus SJRQ3Use of Clove Oil and Eugenol to Anesthetize Fingerling Shabut Barbus grypus
Ögretmen, Fatih; Gölbasi, Selami; Inanan, Burak E.; Kizak, Volkan; Kayim, Murathan
In this study, the efficacy of four doses of clove oil and eugenol were compared to sedate fingerling Shabut Barbus grypus to various stages of sedation and recovery. The results from the present study indicated that effective concentrations were at 50L/L for eugenol (induction time: 58 8s; recovery time: 199 +/- 15s [mean +/- SD]) and clove oil (induction time: 76 +/- 6s; recovery time: 161 +/- 34s). The induction times decreased significantly with the increasing concentrations of clove oil and eugenol, while recovery times increased with increasing concentrations of anesthetic (P < 0.05). Exposure of fish to 75 or 100L/L clove oil or to 50, 75, or 100L/L eugenol resulted in mean induction times 1min. Fish did not become fully sedated within 3min when treated with 25L/L clove oil. Other concentrations of both anesthetics, fish reached to full induction at 3min and recovered from anesthesia 5min. Our results showed the clove oil and eugenol are effective anesthetics for fingerling Shabut when used at concentrations of 50-100L/L. Received March 25, 2013; accepted July 5, 2013
AtıfWoS10OpenAlex14İncele - MakaleYalnız künye2013Scopus SJRQ3Triploit ve diploit dere alabalıklarında (Salmo trutta fario L, 1758) büyüme performansı, gonat yapısı ve eritrosit boyutunun karşılaştırılması
Kizak, Volkan; Türel, Murat; Güner, Yusuf; Kayim, Murathan
The aim of this study was to compare growth, gonadal structure and red blood cell sizes of triploid and diploid brown th trout (Salmo trutta fario). Triploidy was induced by providing a heat shock treatment to the fertilized eggs. From the 18month post-fertilization triploid (TBT) and control diploid (CBT) brown trout groups were investigated up to 32 nd month. Survival, specific growth rate, feed conversion ratio, condition factor, relative growth rate, absolute growth rate, gonadosomatic index, hepatosomatic index and carcass yield were determined in both groups. It has been determined that the triploid fish showed greater live weight than diploid fish despite the difference was not significant (P>0.05). In triploid group triploidisation success was obtained as 95% and male/female ratio was found as 44.4-55.6%. The red blood cells were significantly larger in triploids than diploid ones (P<0.05). Regarding histological section of gonads, triploidy resulted in reduced gonadal development in female, while triploid males seem to exhibit normal gonadal development. Our results suggest that since triploid females could grow more than males, the growth performance studies on triploid brown trout should be performed with all-female stocks under fish farming practices especially for the production of large size trout.
AtıfTR Dizin3İncele - MakaleYalnız künye2013Scopus SJRQ3Comparison of Growth Performance, Gonadal Structure and Erythrocyte Size in Triploid and Diploid Brown Trout (Salmo trutta fario L, 1758)
Kizak, Volkan; Güner, Yusuf; Türel, Murat; Kayim, Murathan
The aim of this study was to compare growth, gonadal structure and red blood cell sizes of triploid and diploid brown trout (Salmo trutta fario). Triploidy was induced by providing a heat shock treatment to the fertilized eggs. From the 18th month post-fertilization triploid (TBT) and control diploid (CBT) brown trout groups were investigated up to 32nd month. Survival, specific growth rate, feed conversion ratio, condition factor, relative growth rate, absolute growth rate, gonadosomatic index, hepatosomatic index and carcass yield were determined in both groups. It has been determined that the triploid fish showed greater live weight than diploid fish despite the difference was not significant (P>0.05). In triploid group triploidisation success was obtained as 95% and male/female ratio was found as 44.4-55.6%. The red blood cells were significantly larger in triploids than diploid ones (P<0.05). Regarding histological section of gonads, triploidy resulted in reduced gonadal development in female, while triploid males seem to exhibit normal gonadal development. Our results suggest that since triploid females could grow more than males, the growth performance studies on triploid brown trout should be performed with all-female stocks under fish farming practices especially for the production of large size trout.
AtıfWoS24OpenAlex22İncele - MakaleYalnız künye2013Scopus SJRQ3Seasonal Variations of Proximate and Total Fatty Acid Composition of Wild Brown Trout in Munzur River, Tunceli-Turkey
Ates, Mehmet; Çakirogullari, Gul Celik; Kocabas, Mehmet; Kayim, Murathan; Can, Erkan; Kizak, Volkan
Seasonal variations of proximate composition and fatty acid profiles of wild brown trout (Salmo trutta macrostigma Dumeril, 1858) caught from the Munzur River, Tunceli-Turkey were investigated in this study. It was determined that wild brown trout was high in mono-unsaturated, poly-unsaturated and saturated fatty acids, respectively. C18:1 omega-9 (oleic acid) was the most abundant fatty acid in all seasons ranging from 20.27 to 29.35 %. C22:6 omega-3 (docosahexaenoic acid-DHA), C18:3 omega-3c (cis-linolenic acid), C18:2 omega-6c (linoleic acid), and C20:5 omega-3 (eicosapentaenoic acid-EPA) were found to be predominant fatty acids in PUFAs. As a conclusion, wild brown trout living in Munzur river could be considered as an important protein and omega-3 fatty acid source according to the nutritional quality results evaluated in terms of proximate and fatty acid composition.
AtıfWoS13OpenAlex11İncele - MakaleAçık Erişim2012Scopus SJRQ3The Effects of Different Dosage of Kefir with Different Durations on Growth Performances and Antioxidant System in the Blood and Liver Tissues of Coruh Trout (Salmo coruhensis)
Can, Erkan; Kurtoglu, Ilker Zeki; Benzer, Fulya; Erisir, Mine; Kocabas, Mehmet; Kizak, Volkan; Kayim, Murathan; Çelik, Huseyin Tugrul
The objective of the present work is to examine the effects of different doses (0, 10, 20 and 40 g kg(-1) fish diet mass) of kefir on growth performance and oxidant-antioxidant status in the blood and liver tissues of Coruh trout, Salmo coruhensis, in different periods (2 and 3 months). In this study, survival was more than 88.3%, and irrespective of dietary kefir levels at the end of the study. There were no significant differences in SGR (Specific growth rate), FCR (Feed conservation rate), CF (Condition factor) among fish fed diets with 0, 10, 20 and 40 g kg(-1) kefir, however, these growth values were significantly different in terms of durations between 2-month and 3-month treatment (P<0.05). Our results indicated that TAS (Total Antioxidant Status) and TOS (Total Oxidant Status) in blood tissues reduced with kefir treatment at the end of third month (P<0.05). Malondialdehyde (MDA) levels in liver decreased in all groups compared with control group and a considerable extent decrease was observed in 40 g dose of kefir treatment at the end of third month. The data obtained from this experiment indicated that the same dose of kefir was more effective at the end of 3-month treatment than 2-month treatment (P<0.001). Although there was no statistical difference among groups, an increase in the glutathione peroxidase (GSH-Px) enzyme activity was observed in all groups compared to control groups. While catalase (CAT) activity decreased in all groups compared to control group at the end of second month (P<0.01), the decrease was insignificant level at the end of third month. In glutathione (GSH) levels, statistical differences were no observed in all groups compared to the control group with 2-month treatment while there were significant increases with 3-month treatment (P<0.001). It was concluded that kefir could play an antioxidant role and its effectiveness depended on dosage and time of application in Coruh trout, S. coruhensis.
AtıfWoS15OpenAlex15İncele - MakaleYalnız künye2011Scopus SJRQ3Proximate Composition, Fatty Acid Profile and Mineral Content of Wild Brown Trout (Salmo trutta sp.) From Munzur River in Tunceli, Turkey
Kayim, Murathan; Öksüz, Abdullah; Özyilmaz, Ayse; Kocabas, Mehmet; Can, Erkan; Kizak, Volkan; Ates, Mehmet
In present study, the proximate composition, fatty acid profile and mineral content of wild brown trout living in Munzur river (Tunceli/Turkey) were investigated. The average level of protein, lipid, moisture and ash content of muscle of the wild brown trout was calculated to be 17.48, 2.3, 77.8 and 1.5 %, respectively. Thirty fatty acids were identified in this study. Identification of the fatty acid was carried out with gas chromatography-mass spectrometry (GC-MS). The total polyunsaturated fatty acids (PUPA) were found the highest fatty acid followed by that of saturated fatty acids (SFA) and monounsaturated fatty acids (MUFA). Docosahexaenoic acid (DHA, C22:6n3) and eicosapentaenoic acid (EPA, C20:5n3), linolenic acid (LNA, C18:3n3) and linoleic acid (LA, C18:2n6) were found to be predominant fatty acids in PUFAs with the percentages of 11.25, 6.82, 6.30 and 4.88, respectively. The ratio of n3/n6 and DHA /EPA was calculated to be 4.55 and 1.65, respectively. Twelve elements were determined in this study. Determination of elements was performed with ICP-AES. P and K were the predominant element among the minerals analyzed and calculated to be 1305.56-2967.06 and 1908.68-1220.10 mg kg(-1) in muscle-skin of the wild brown trout, respectively.
AtıfWoS8İncele