Blood biochemical changes in common carp (Cyprinus carpio Linnaeus, 1758) fed different levels of copper sulphate and zeolite

In this study, copper toxicity, was investigated after the addition of zeolite to the diet of common carps (Cyprinus carpio). The experiment included four groups with three replicates each. The 4 group feeds were [CuSO4; CuSO4 Zeolite; Zeolite, and the control without CuSO4 or Zeolite with three replicates each. Fishes were kept in 80 L glass aquariums with 10 fishes with a mean weight of 60.6 0.2 g. At the end of each period, a necropsy was performed on fishes from each treatment, and gross clinical signs were recorded. We found significant changes in the blood parameters of the common carps with or without different levels of zeolite and copper. Changes in cholesterol (CHOL), triglyceride (TG), low density lipoprotein (LDL), alanine aminotransferase (ALT), aspartate aminotransferase (AST), alkaline phosphatase (ALP), calcium (Ca2), phosphorus (P), sodium (Na), potassium (K), chloride (Cl-), magnesium (Mg2), and ferrous (Fe2) were also significant. Our results suggest that zeolite can be used in fish feeds at a rate of 40 mg/l to mitigate the toxic effects of copper

Physicochemical analysis of water quality of brook kuruçay

Bu çalışmada, Temmuz 2011 ile Haziran 2012 arasında 9 istasyondan alınan su örneklerinin analizi ile Kuruçay deresinin su kalitesi parametrelerindeki aylık ve mevsimsel değişimleri incelemek, su kalitesi özelliklerini belirlemek, kirlilik problemlerini ortaya çıkarmak, sucul yaşam işin uygunluğu belirlemek ve Yüzey Suları Kalite Kontrol Yönetmeliğinin Kıta İçi Yüzey Suları Sınıflandırması kriterlerine göre su kalitesini sınıflandırması amaçlanmıştır. Çalışma alanı Sivas ili Hafik ilçesinin güneydoğu kesiminde yer almakta ve rakım 2608m'dir. Dere üzerindeki 9 istasyondan su örnekleri alınmış ve bu su örneklerinde bazı fiziko -kimyasal parametreler ve ağır metal konsantrasyonları analiz edilmiştir. Ekipmanların, saha tipi ölçüm aletlerinin ve cam örnekleme kaplarının temizlik ve bakımları su örneklerini almaya çıkmadan bir gün önce gerçekleştirilmiştir. Örnekleme tüpleri su yüzeyinin 15 cm altına daldırılmış ve suyun kendi cazibesi ile tüpe dolması sağlanmıştır. Ağır metal konsantrasyonları Sivas İl Kontrol Laboratuvarı'nda aynı gün, en geç 5 saat içerisinde gerçekleştirilmiştir. Toplam alkalinite, toplam sertlik, amonyum azotu, fosfat, nitrit, nitrat, sülfat, sodyum, potasyum, askıda katı madde (AKM), kimyasal oksijen ihtiyacı (KOİ), biyolojik oksijen ihtiyacı (BOİ), kalsiyum, magnezyum, demir, kurşun, bakır, çinko, nikel, civa ve kadmiyum analizleri gerçekleştirilmiştir. Analizler sonucunda; Kuruçay deresi, çevresindeki bazı köylerin içme suyu ihtiyacını da karşıladığı için kirliliğe karşı en yüksek düzeyde hassas su kaynağı sınıfına girmektedir. Bu sebeple Kuruçay deresinin su kalitesi düzenli olarak izlenmelidir.In this study, through the analyses of water samples taken from 9 stations on the brook between July 2012 and June 2013, we aimed to determine the monthly and seasonal changes in water quality parameters of Brook Kuruçay, to determine the waterquality properties, to reveal the pollution problems, to determine the suitability level in terms of aquatic life and to classify the quality of water in accordance with Surface Water Quality Management Regulation's Inland Surface Water Classes criteria. The study area is located southeast of the Hafik District of Sivas city and the altitude is 2608 m. The water samples were collected from 9 stations established on the brook, and some physicochemical parameters and heavy metal concentrations were analyzed in water samples. The cleaning and maintenance of all of the equipment, land-type measurement tools, and glass sampling containers to be used in sampling were made 1 day before sampling. Sampling tubes were immersed into 15 cm below the water surface for taking water samples. Heavy metal concentrations were determined in the Sivas Provincial Control Laboratory in the same day with sampling (within 5 hours). The total alkalinity, total hardness, ammonium nitrogen, nitrite, nitrate, ammonium azote, phosphate,sulfite, sulfate, chloride, sodium, potassium, suspended solid matter (SSM), chemical oxygen demand (COD), biological oxygen demand (BOD), calcium, magnesium, ferrous, lead, copper, zinc, nickel, mercury and cadmium analyses of water samples were performed.As a result of the analyses, it was determined that, since Brook Kuruçay falls into the water resource class, which is the most sensitive to pollution, the water quality of the brook should be monitored regularly

Determination of water quality and usability level of eglence pond (Boyabat, Sinop)

WOS: 000457209400004In this study, the first quality data on water quality of Eglence pond which is located in Boyabat province of Sinop, was evaluated. The monitoring study was performed monthly in three sampling sites between September 2015 and August 2016. A total of 21 physicochemical parameters and 7 heavy metal levels were evaluated on the seasonal, and annual. Then, these values have been classified according to the WHO and Turkey's Water Quality Management Regulation criteria. The Egence Pond water is generally suitable for aquatic organisms and irrigation. However, the high water temperatures detected during the autumn season can pose a threat to living sensitive aquatic organisms. In this study, water temperature, sulphite, nitrate and pH changes do not a very dangerous situation. The sources of pollution threatening this Pond can be primarily the climate, and the fertilizers used in agricultural activities around the Eglence pond

Length-Weight and Length-Length Relationships of the Main Commercial Fish Species in Izmir Bay (Aegean Sea Coast of Turkey) / 2020-2021 Fishing Season

In this study, a total of 366 samples were collected and 30 of them belonged to Sardina pilchardus, 54 of Engraulis encrasicolus, 30 of Belone svetovidovi, 18 of Caranx rhonchus, 12 of Trachurus mediterraneus, 10 of Trachurus trachurus, 21 of Mullus Barbatus, 30 of Mullus surmuletus, 30 of Boopss boops, 35 of Oblada melanura, 46 of Scomber colias, 22 of Scomber scombrus and 28 of Solea solea, were obtained by commercial fishermen in the Izmir Bay (Aegean sea coast of Turkey) during period of 2020 and 2021 fishing season. Negative allometry was determined for Caranx rhonchus, Scomber colias and Solea solea while positive allometry was present for Engraulis encrasicolus and the remaining 9 fish species have isometric growth. The results indicated further that the length-length relationships were highly correlated for all examined fish species (r²>0.900, P0.05)

Determination of Water Quality Parameters and Heavy Metal Content in Surface Water of Çiğdem Pond (Kastamonu/Turkey)

The main aims of this study were to observe the seasonal variations of physicochemical parameters and heavy metal content, to determine the water quality properties and the suitability level in terms of aquatic life, and also to classify the quality of water in accordance with the Surface Water Quality Management Regulation (SWQMR) criteria at Çiğdem Pond (Kastamonu/Turkey). In total, 21 physicochemical parameters and 7 heavy metals were investigated for water quality assessment of the studied pond between July 2015 and June 2016 in 3 stations. The water quality in Çiğdem Pond was found to be Class I according to SWQMR. The results of this study provide a data baseline for future studies on subsequent evaluations of possible future environmental contamination. Also, to protect the water quality and to ensure the health of aquatic life in this area, it is required to make regular observations

Yağlıdere Çayı (Giresun) Sediment Kalitesinin Belirlenmesi

Sucul ekosistemlerde sediment endüstriyel ve tarımsal deşarjlar, evsel atıklar, atık su arıtma tesisleri ve yağmur gibi doğa olayları sonrasında çeşitli kirleticiler tarafından sıklıkla kirletilmektedir. Bu etkilerinden dolayı sucul ekosistem ve insan sağlığını korumak için sediment kalitelerinin geliştirilmeye ihtiyacı vardır. Bu çalışmada Yağlıdere Çayı'ndan 5 istasyondan toplanan sediment örneklerinde bazı metallerin (As, Se, Ag, Cd, Na, K) pH, elektriksel iletkenlik, (%) su içeriği ve (%) organik madde miktarı analiz edilmiştir. Elde edilen veriler ile yerkabuğundaki iz element miktarlarından faydalanılarak Jeoakümülasyon İndeks değeri tahmin edilmiş ve örneklerin çoğunda antropojenik etkinin varlığı belirlenmiştir. Sonuç olarak, çalışma alanında K, Na, As ve Se'nin baskın olarak biriktiği gözlemlenmiştir. Bu metaller Yağlıdere Çayı'nda olumsuz etkiye sahip ve çevresel risk yaratabilir.Sediments in aquatic systems are often contaminated by various pollutants originating from the sources such as industrial and agricultural discharges, municipal wastewater treatment plants, and storm water. These effects lead to the need to develop sediment quality objectives regarding the protection of aquatic ecosystems and human health. In this study, the sediment samples were collected from five sampling sites and then analyzed in order to identify the concentrations of certain metals (As, Se, Ag, Cd, Na, and K), the levels of pH, conductivity, water content (%) and organic matter (%) in the Yağlıdere Stream. Finally, Geo-accumulation index values calculated based on the estimations regarding the background trace element concentrations suggested the anthropogenic influences in most of the samples. In conclusion, it was observed that K, Na, As, and Se dominantly accumulated in the study area. These metals may have a negative impact on the research area and create an environmental risk

Determining the Sediment Quality of Yağlıdere Stream (Giresun)

Sediments in aquatic systems are often contaminated by various pollutants originating from the sources such as industrial and agricultural discharges, municipal wastewater treatment plants, and storm water. These effects lead to the need to develop sediment quality objectives regarding the protection of aquatic ecosystems and human health. In this study, the sediment samples were collected from five sampling sites and then analyzed in order to identify the concentrations of certain metals (As, Se, Ag, Cd, Na, and K), the levels of pH, conductivity, water content (%) and organic matter (%) in the Yağlıdere Stream. Finally, Geo-accumulation index values calculated based on the estimations regarding the background trace element concentrations suggested the anthropogenic influences in most of the samples. In conclusion, it was observed that K, Na, As, and Se dominantly accumulated in the study area. These metals may have a negative impact on the research area and create an environmental risk

Yüzey suyundaki su kalitesi parametreleri ve ağır metal içeriğin belirlenmesi

Bu çalışmanın temel amaçları, Çiğdem Göleti'nde (Kastamonu-Türkiye) fizikokimyasal parametreler ve ağır metal içeriğin mevsimsel değişimini gözlemlemek, su kalitesi özelliklerini ve sucul yaşam açısından uygunluk seviyesini belirlemek ve ayrıca su kalitesini Yüzeysel Su Kalitesi Yönetimi Yönetmeliğine göre sınıflandırmaktır. Çalışmanın yürütüldüğü göletin su kalitesinin değerlendirilebilmesi için, Temmuz 2015 ve Haziran 2016 tarihleri arasında, 3 istasyonda toplam 21 fizikokimyasal parametre ve 7 ağır metal incelenmiştir. Sonuçta Çiğdem Göleti'ndeki su kalitesi, Yüzey Su Kalitesi Yönetimi Yönetmeliğine göre 1. sınıf olarak bulunmuştur. Ayrıca çalışma sonuçları, gelecekteki olası çevresel kirliliğinin değerlendirilmesi açısından ileriki çalışmalar için bir veri altyapısı sağlayacaktır. Bununla birlikte, su kalitesini korumak ve bu alanda sucul yaşamın sağlığını sağlamak için, düzenli gözlemler yapılması gerekmektedirThe main aims of this study were to observe the seasonal variations of physicochemical parameters and heavy metal content, to determine the water quality properties and the suitability level in terms of aquatic life, and also to classify the quality of water in accordance with the Surface Water Quality Management Regulation (SWQMR) criteria at çiğdem Pond (Kastamonu/Turkey). In total, 21 physicochemical parameters and 7 heavy metals were investigated for water quality assessment of the studied pond between July 2015 and June 2016 in 3 stations. The water quality in çiğdem Pond was found to be Class I according to SWQMR. The results of this study provide a data baseline for future studies on subsequent evaluations of possible future environmental contamination. Also, to protect the water quality and to ensure the health of aquatic life in this area, it is required to make regular observations

A preliminary study of fecundity of whiting, Merlangius merlangus euxinus (Linnaeus, 1758) in coast of Tirebolu (Eastern Black Sea)

In this research, a preliminary study was carried out in January and February 2014 todetermine the fecundity of the whiting species in Tirebolu, Eastern Black Sea. After thetotal length (cm) and weight (0.01 g) of the 70 fish specimens were measured in thelaboratory, they were dissected for sex determination. Using the 20 ovaries at the thirdand fourth maturation stages, 3 sub-samples which is 2-5% of the total ovary weight(from the anterior, median and posterior parts of the ovary) were taken from each ovaryto determine the fecundity, and hydrated oocytes were counted with gravimetric method.Total fecundity, total oocytes number in the ovary were computed with the formulaF(nG)/g. The total length-weight values were 12.6-23.3 cm (mean 17.082.12) and15.59-95.72 g (mean 41.07 16.75), respectively, and total length-weight relationshipwas computed as W0.0073L3.024 (R20.94) for the 70 fishes evaluated. Fecundity wascomputed as 3.247-30.534 (mean: 10.1396.953) eggs and a linear relationship betweenfecundity and total length was calculated as F0.0186L4.5631 (R20.70). In conclusion, thefecundity results of this prelaminar study were compared with similar studies on thewhiting species from Black Sea and other seas