Kurum Yazarı "Kayış, Şevki" İçin Listeleme
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Acute toxicity and histopathological assessment of bisphenol a in danube sturgeon (Acipenser gueldenstaedtii) larvae
Minaz, Mert; Er, Akif; Ak, Kübra; Kurtoğlu, İlker Zeki; Kayış, Şevki (HARD Publishing Company, 2024)Bisphenol A (BPA), an important component of the plastics industry, is characterized as an endocrine disrupting toxic substance for aquatic organisms. This study focused on the toxic effects of BPA on endangered Danube ... -
Acute toxicity of pozzolanic cement on two crustacean species, water flea (Daphnia magna) and gammarus komareki
Er, Akif; Kayış, Şevki (Springer, 2021)This study was conducted to determining the values of LC50, mortality rates and DNA damages (Daphnia magna) of species exposed to pozzolanic cement concentrations of 50, 100, 150, 200, 250, and 300 mg/L for 24 h. To compare ... -
Aeromonas hydrophila as a causative agent of blue sac fry syndrome in different trout species
Kayış, Şevki; Er, Akif; Yılmaz, Ceyran; Düzgün, Ahmet; Köse, Özay; Kurtoğlu, İlker Zeki (Wiley-Blackwell, 2015)Blue sac fry syndrome (BSFS) occurs in alevins of rainbow trout Oncorhynchus mykiss (Walbaum) and brook trout Salvelinus fontinalis, (Mitchill) and can cause substantial losses during the incubation period. It is generally ... -
Analysis of fish health status in terms of sustainability of aquaculture in Turkey-A SWOT analysis
Kayış, Şevki (2019)The sustainability of activities for the production of food or other industrial products in natural areas all over the world is perhaps one of the most important problems. In order to ensure sustainability in the aquaculture ... -
Antimicrobial agents, triclosan, chloroxylenol, methylisothiazolinone and borax, used in cleaning had genotoxic and histopathologic effects on rainbow trout
Çapkın, Erol; Özcelep, Tuna; Kayış, Şevki; Altınok, İlhan (Pergamon-Elsevier Science Ltd, 2017)Triclosan (TRC), chloroxylenol (PCMX) and methylisothiazolinone (MIT) have been commonly used as an antimicrobial in soaps while borax (BRX) is used in household cleaning. After using these chemicals, they are washed down ... -
Ascidian Tunicate, Botryllus schlosseri (Pallas, 1766) infestation on Seahorse
Kayış, Şevki (2011)An unusual infection by tunicate ascidians on the trunk part of a seahorse caught by gill netting in the Eastern Black Sea Region of Turkey was observed. The colour, zooid diameter and width of the zooids colony of tunicate ... -
Assessment of hematological indicators, histological alterations, and DNA damage in Danube sturgeon (Acipenser gueldenstaedtii) exposed to the organophosphate malathion
Er, Akif; Minaz, Mert; İpek, Zeynep Zehra; Ak, Kübra; Kurtoğlu, İlker Zeki; Kayış, Şevki (Elsevier, 2023)This study focused on organophosphate malathion toxicity in Danube sturgeon (Acipenser gueldenstaedtii) and its negative effects in sub-lethal concentration. In this context, the LC50 value of fish exposed to five different ... -
Bacterial examination of wild and cultured fish present in the same aquatic ecosystem, and the antibiotic resistance of the isolated bacteria
Bingöl, Ahmet; Er, Akif; İpek, Zeynep Zehra; Kayış, Şevki (Central Fisheries Research Inst, 2022)This study investigated the bacteria present in natural and cultured fish species from the same aquatic system, and difference of their antibiotic resistance. A total of 129 fish, Georgian shemaya (Alburnus derjugini), ... -
Bacterial pathogens and health problems of Acipenser gueldenstaedtii and Acipenser baerii sturgeons reared in the eastern Black Sea region of Turkey
Kayış, Şevki; Er, Akif; Kangel, P.; Kurtoğlu, İlker Zeki (Shiraz Univ, 2017)Farming sturgeons is an economically important practice in a number of Asian and European countries. However, since it is not widely implementedin Turkey, fertilized eggs necessary for research and industrial activities ... -
Comparison of the efficacy of two phenotypic identification kits and classic PCR methods to identify Aeromonas hydrophila isolated from fish farms
Balcı, Şerafettin; Er, Akif; İpek, Zehra; Kayış, Şevki (ScientificWebJournals (SWJ), 2023)In recent years, phenotypic identification kits have been reported to give incorrect results in identifying Aeromonas species, whereas molecular identification is quite reliable. In this context, Aeromonas hydrophila ... -
Determination of bacterial contamination and antibiotic resistance of the bacteria in the some trout farm hatcheries in the Eastern Black Sea region of Turkey
Kayış, Şevki; Soyköse, Gökhan; İpek, Zeynep Zehra; Er, Akif (Egirdir Fisheries Research Institute, 2021)This study was carried out to reveal bacterial contamination and antibiotic resistance profiles of isolated bacteria in the hatchery systems of trout farms located in the Eastern Black Sea region of Turkey. Inlet water, ... -
Determination of the use of Ligula intestinalis as a bioindicator in malathion residues
İpek, Zeynep Zehra; Minaz, Mert; Kayış, Şevki (Springer, 2023)In this study, the usability of Ligula intestinalis as a bioindicator for pesticide accumulation was investigated. Two different experiments were designed for the detection of pesticide residues and its withdrawal period. ... -
Disease of rainbow trout caused by Pseudomonas luteola
Altınok, İlhan; Balta, Fikri; Çapkın, Erol; Kayış, Şevki (Elsevier, 2007)Bacteria isolated from rainbow trout, Oncorhynchus mykiss, kept in a farm, in Turkey. During the outbreak, 40% of the rainbow trout (10-40 g) died. Typical clinical signs were exophthalmia, dark pigmentation, hemorrhage ... -
Effect of dıetary kefır on the dıgestıve and lıver enzymes actıvıtıes and glucose level of coruh trout, salmo coruhensıs (actınopterygıı: salmonıformes: salmonıdae)
Can, Şafak Seyhaneyıldız; Kutluyer, Filiz; Can, Erkan; Kayış, Şevki; Sonay, Fatma Delihasan; Köse, Özay; Aksu, Önder; Erdamar, Hüsamettin; Yiğitoğlu, Muhammet Ramazan; Kayım, Murathan (Wydawnictwo Akad Rolniczej W Szczecinie, 2014)The probiotics are very important for aquaculture because of their role in enhancing the fish health status, improving disease resistance, growth performance, and body composition, reducing malformations, improving gut ... -
Effect of pozzolanic cement exposure in nile tilapia (Oreochromis niloticus)
Er, Akif; Minaz, Mert; Kayış, Şevki (İstanbul University Press, 2024)Cement used in structures such as bridges, dams, and retaining walls built on the aquatic ecosystem harms different organisms. The current study reveals the effect of pozzolanic cement (PC) on Nile Tilapia (Oreochromis ... -
Effects of black soldier fly meal feeding on rainbow trout gut microbiota, immune-related gene expression, and Lactococcus petauri resistance
Sayramoğlu H.; Öztürk R.Ç.; Ustaoğlu, D.; Terzi, Y.; Yandı, İlhan; Kayış, Şevki; Çapkın, Erhan; Altınok, İlhan (Brill Wageningen Academic, 2023)Providing a sustainable and affordable food supply is one of the most significant challenges facing the global aquaculture industry. Black soldier fly (BSF), Hermetia illucens, meal is a particularly promising alternative ... -
Effects of ceramic balls on trout welfare during their live transfer conditions
Akdemir, Gülperi; Er, Akif; İpek, Zeynep Zehra; Minaz, Mert; Kayış, Şevki (Ege Üniversitesi, 2022)The effects of ceramic balls on live transfer conditions of rainbow trout (Oncorhynchus mykiss, (Walbaum,1792)) were determined by examining ammonia, pH, dissolved oxygen, and temperature of water and gill histology of ... -
Effects of chicken waste meal and vegetable substrate fed black soldier fly prepupae meal on rainbow trout (Oncorhynchus mykiss)
Yandı, İlhan; Öztürk, Rafet Çağrı; Terzi, Yahya; Kayış, Şevki; Altınok, İlhan (Wageningen Academic Publishers, 2023)A feeding trial was conducted to evaluate the effects of the dietary inclusion of black soldier fly (BSF), Hermetia illucens, prepupae in rainbow trout (Oncorhynchus mykiss) fingerling diets on growth performance, fillet ... -
Effects of concrete additives on vital tissues of rainbow trout (oncorhynchus mykıss): A histological examination
Er, Akif; Öztek, Özgür; Kayış, Şevki (Parlar Scientific Publications (P S P), 2019)The construction of reinforced concrete structures in aquatic systems and water basins has now become an inevitable need. Concrete structures, both simple and large, such as retaining walls, the design of landscape areas, ... -
Effects of lactococcus lactis and bacillus sp. on hatchery performance of Rainbow trout (oncorhynchus mykiss) eggs until larval stage
Piranlıoğlu, Engin; İpek, Zeynep Zehra; Er, Akif; Minaz, Mert; Kayış, Şevki (Isparta Uygulamalı Bilimler Üniversitesi, 2023)In this study, the effect of Lactococcus lactis and Bacillus sp. (Gram-positive bacteria) on survival rates of rainbow trout (Oncorhynchus mykiss) from egg to larval stage was investigated. In addition, the effects of ...