Biochemical Effects of Gadolinium on a Freshwater Invertebrate Dreissena polymorpha (original) (raw)
Related papers
The Aggregation of Boron on the Tissues of Gold Fish (Carassius auratus Linnaeus, 1758
Bu çalışmada, model bir balık türü olabilen Japon balığının (Carassius auratus Linnaeus, 1758) karaciğer ve kas dokusundaki, yem ve su kaynaklı bor birikiminin dağılımı incelenmiştir. Her bir uygulama için her bir akvaryuma 12 adet balık örneği konulmuştur. Uygulamalarda, akvaryum gruplarının suyuna belirli oranlarda (1 mg/L, 10 mg/L ve 20 mg/L) borik asit ve borik asit emdirilmesi ile elde edilen yemlerden (1 mg/kg, 5 mg/kg ve 10 mg/kg) verilmiştir. Dokulardaki bor birikimi mikrodalga yaş yakma ve indüktif olarak eşleştirilmiş kütle spektroskopisi (ICP-MS) tekniği ile belirlenmiştir. Japon balıklarının farklı dokularında incelenen maksimum bor birikimi 20mg/L sulandırılmış borik asit uygulamasında karaciğer dokusunda 1,78±0,02 mg/kg olarak tespit edilmiştir. 1 mg/kg yem uygulamasında kas dokusunda ise herhangi bir bor birikiminin olmadığı gözlemlenmiştir. Borlu su grupları için Transfer faktör (TF) değeri en düşük dozda en yüksek oranda iken doz miktarı arttıkça TF değeri azalmış ve 0,1'e yakın bir sabitlik göstermiştir. Bor ilaveli yem kullanılan deney gruplarında ise TF değeri en düşük dozda (1 mg/kg) 0 iken yemde kullanılan borun miktarı arttıkça (5 mg/kg) TF değerinin 0,06'ya çıktığı tespit edilmiştir. Bu çalışmada ortaya konulan iki önemli tespit; bor birikiminde karaciğer hedef organlardan biri iken, kas dokusunun bor birikimi açısından hedef organ olmadığı ve yem ile alınan borun dokularda birikim oranının düşük olmasıdır. In this study, it was aimed to determine the water-borne and food-borne boron accumulation in the liver and muscle tissues of Gold Fish (Carassius auratus Linnaeus, 1758). For each treatment, 12 individuals were. The water-borne boron treatments were applied as boron acid concentration of 1 mg/L, 10 mg/L and 20 mg/L in the aquarium water, while the food-borne boron treatments were prepared food contained the defined levels of boron (1 mg/kg, 5 mg/kg and 10 mg/kg) as boric acid. The boron levels in the tissues were determined by an ICP-MS procedure. The maximum boron concentration was found in the 20mg/L water borne boron treatment in the liver tissue (1.78±0.02 mg/kg). In the water-borne boron treatments, the maximum Transfer Factor (TF) was found in the 20mg/L boron concentration, and TF values were increased when the boron concentrations were decreasing. In the 1 mg/kg food-borne boron treatment, TF was found as 0, and increasing concentration of boron in the food caused an increase in TF reached about 0.06. This study suggested that the target organ for boron accumulation is the liver rather than the muscles and the accumulation of food-borne boron is lower when comparing water-borne boron.
In this study, annual variations of nutrient (NO -2+NO -3, PO -3 4 and SiO4) and chlorophyll-a connected with physicochemical parameters of the surface waters in a station next the Çanakkale Marina between March 2001 and March 2002 were determined. Temperature, salinity, pH, conductivity, ÇO (dissolved oxigen), ORP (Oxidation Reduction Potential), TDS (Total Dissolved Solids) parameters of surface water in Dardanelles were also measured. Nitrit+nitrat (NO -2+NO -3) peaks were noticed in three separate time such as November (1.606 µM), January (2.320 µM) and March (1.3003 µM). However, peaks of phosphate (PO -3 4) were noticed in June (0.700 µM), October (0.400 µM) and January (0.500 µM). Like other nutrient concentrations, there were three different peaks in silicate (SiO4), March (3.70 µM), October (4.40 µM) and January (4.45 µM). Except February (1.503 µM), silicate was no lower than 2.500 µM during the year. Like nutrient concentrations, chlorophyll-a is a indicator of phytoplankton activity demonstrated three different peaks during the year. These peaks occurred in July (3.3431 µg l -1 ), January (1.7543 µg l -1 ) and May (1.0757 µg l -1 ). In correlation coefficient between bio-physicochemical parameters, there were very important negative correlations between temperature and salinity (r= -0.8587), between DO and temperature (r= -0.5177) and between TDS and temperature (r= -0.8532). However, there were very important positive correlations between salinity and conductivity (r= 0.5374) and between salinity and TDS (r= 0.9863). But, there were no important correlations between nutrient concentration, other physicochemical parameters (temperature, salinity e.g.) and chlorophyll-a. An important positive correlation between silicate and phosphate (r= 0.5190) was found, only. Results showed that seasonal variations in the physico-chemicals, nutrients and chlorophyll-a are effected with the counter flows in the Dardanelles. In addition, there were very important differences (10-15 times) between minimum and maximum concentration in nitrit+nitrat during the sampling period. But, variations in phosphate and silicate were lower than nitrit-nitrat variations.
Ege Üniversitesi Ziraat Fakültesi Dergisi, 2015
ÖZET u çalışmanın amacı kesme çiçek olarak üretilen glayöl bitkisine uygulanan potasyumlu ve kalsiyumlu gübre seviyelerinin bitki besin maddesi durumu ile bitki boyu, bitki ağırlığı, başak uzunluğu, kandil sayısı ve vazo ömrü üzerine etkilerinin incelenmesidir. Çalışmada potasyumlu gübreleme 12-24 g m-2 K2O, kalsiyumlu gübreleme 6-12 g m-2 CaO olacak şekilde uygulanmıştır. Artan gübre uygulamaları bitki kısımlarındaki K ve Ca miktarı ve kalite parametrelerine önemli düzeyde pozitif yönde etki yapmıştır. ABSTRACT he objective of the study was to examine the effect of differential supplies of potassium and calcium to the plant nutrients, spike length, stem length, the number of florets per spike, stem diameter and vase life of gladiolus. The applied levels of fertilizers were 12-24 g m-2 for K2O and 6-12 g m-2 CaO. The uptake of K and Ca by plant part were increased with increasing fertilizers levels and the quality of gladiolus which was found significant at 1% level.
Toxic Effects of Bisphenol S on the Gonad and Visceral Organs of Goldfish (Carassius auratus)
Acta Aquatica Turcica, 2020
Bisfenol A (BPA), polikarbonat plastiklerin ve epoksi reçinelerinin üretiminde kullanılan çevresel bir kirleticidir. Bununla birlikte bisfenol S (BPS), son zamanlarda BPA ürünlerine alternatif olarak kullanılmaya başlanan bir bisfenol analoğudur. Bu çalışmada farklı BPS konsantrasyonlarına (0, 100 ve 500 μg/L) 21 gün maruz bırakılan japon balıklarının (Carassius auratus) karaciğer, böbrek, gonad ve solungaç dokularındaki bir dizi etki histopatolojik olarak belirlenmiştir. Solungaçlarda BPS’nin hiperemi, ödem, epitel hücrelerinde deskuamasyon ve nekroza neden olduğu dikkat çekmiştir. Böbreklerde nekroz ve melanomakrofaj infiltrasyonları sıklıkla gözlenmiştir. Karaciğerde BPS’nin hiperemi ve inflamatuar hücre infiltrasyonlarına neden olduğu saptanmıştır. Bu çalışma, BPS'nin Carassius auratus'un çeşitli viseral organlarında dejeneratif değişikliklere neden olduğu ve histopatolojik değişikliklerin şiddetinin doza bağlı olduğunu ortaya koymuştur
1. In this study, water quality of Kelkit Stream was presented. 2. Sampling were realised in nine sites along the Kelkit Stream between 14 and 31 July 2008. 3. Water quality were assessed by the application of Hilsenhoff Family Index, EPT Index, taxa richness, contribution of dominance family and also physicochemical properties of the sites were evaluated. 4. The polluted sites were concentrated in lower part of the stream. 5. Kelkit Stream is affected by pollution (originated from urban sewage, agricultural and industrial activities), physical degradation of habitats and dams which were strongly associated with altered hydrologic regime.
Uptake of Organic Chemicals across Fish Gills: Alternatives to the Use of Fish Populations
Atla-alternatives To Laboratory Animals, 1993
Çalışmamızda, yara yeri örneklerinden izole edilen patojen mikroorganizmaların retrospektif olarak değerlendirilmesi ve antibiyotik duyarlılıklarının belirlenmesi amaçlanmıştır. Laboratuvarlarımıza farklı kliniklerden gönderilen yara yeri örneklerinin kültürü yapılmış, kültürde üreme tespit edilen mikroorganizmalar konvansiyonel yöntemlerle identifiye edilmiş ve Kirby-Bauer disk difüzyon yöntemiyle Clinical and Laboratory Standards Institute (CLSI) önerilerine göre antibiyotik duyarlılıkları belirlenmiştir. Stafilokok suşlarında metisilin direnci sefoksitin ve oksasilin diskleriyle, Escherichia coli ve Klebsiella spp. suşlarında GSBL varlığı çift disk sinerji yöntemiyle araştırılmıştır.
Ege Journal of Fisheries and Aquatic Sciences, 2013
The preservative effect of humic acid versus cadmium toxicity on brown trout was investigated (Salmo trutta fario Linneaus, 1792), in terms of some hematological parameters in this study. Fish had been exposed to cadmium chloride or/and humic acide (2 ppm Cd, 2ppm Cd+5 ppm humic acid and control) for 7 days. At the end of the trial period, change of hematological parameters; hemoglobin, hematocrite, erythrocyte, mean carpuscular hemoglobin (MCH), mean cell volume (MCV) and mean carpuscular hemoglobin concentration (MCHC) were observed. Statistical analyses showed that the differences in all values but RBC, hematocrite, platelet counts, MCV and MCH were important at p<0.05.
Ege Journal of Fisheries and Aquatic Sciences, 2019
In this study, the effect of Mediterranean mussels (Mytilus galloprovincialis) which accumulate contaminants in the marine environment exposed to 20 and 40 µg/Lsublethal zinc pyrithion (ZnPT) at high levels for 48 and 96 hours on total hemocyte counts was determined. Total hemocyte count is a good bioindicator to assess the effects of environmental pollutants . It was determined that total hemocyte counts were increased in mussels exposed to zinc pyrithione when compared to the control group (p<0.05). It has been found that this substance, which has different usage areas and contaminate aquatic environment, negatively effect the mussels even in low concentrations.
Kocatepe veteriner dergisi, 2021
Seafood are an ideal animal products as adequate and balanced nutrition for human. However, fish affected by environmental pollution maybe transfer the harmful effects of pollution to humans at the end of the food chain. Bafa Lake has been frequently mentioned with the environmental pollution problems in recent years. In this study, the accumulation of copper (Cu), zinc (Zn), iron (Fe), cadmium (Cd), and lead (Pb) heavy metal elements were investigated in the fillet, gonad, liver, and gills of grey mullet fish, which is one of the most caught fish species from Bafa Lake. According to the results obtained, more element concentration levels were determined in the liver and gills than ones in the muscle tissue. Cu concentration was ranked according to tissues, liver ˃ gill > gonad ˃ fillet form; Zn amount, liver ˃ gonad ˃ gill ˃ fillet form; Fe amount, liver ˃ gill ˃ gonad ˃ fillet shaped; Cd amount, liver ˃ filet ˃ gill ˃ gonad. The amount of Pb was found in the form of gonat ˃ liver ˃ filet ˃ gill. It was determined that 16% Cd and 68% Pb out of all the muscle tissue in the samples had above the consumable limit respectively. So, these results are a very risky situation for public health. In order to prevent environmental pollution in Bafa Lake and its harmful effects on humans and other living things, it should not be disconnected from the Meander (Büyük Menderes) River, industrial discharges to be made in the Meander River should be done after treatment, and basin management should always be at the forefront in the development works around the lake.
Endokrin Sistemi Bozan Kimyasallardan Cinsiyet Steroidlerinin Balıklardaki Etkileri
jfas.ege.edu.tr
The Effects of Sex Steroids of Endocrine Disrupting Chemicals on Fishes. Endocrine disrupting chemicals (EDCs) are anthropogenic compounds that have similar properties as endogenous hormones in vertebrates and they are capable of interfering with the endocrine system. EDCs have been detected in sewage receiving effluents from industries and livestock feedlots. Fish living in the recipients contaminated with these EDCs are reported to have reproductive disabilities. The deleterious effects of EDCs have also been reported in amphibians, reptiles, aves, mammals and humans. The natural estrogen, 17β-estradiol (E2), stimulates the fish liver to synthesize vitellogenin (Vtg). Vtg is the protein that nourishes the maturation of eggs. 17αethinylestradiol (EE2) is a potent, synthetic estrogen used in oral contraceptive preparations. It mimics E2 leading to enhanced circulatory Vtg concentrations and male to female sex reversal in fish. 17β-trenbolone (Tb), an androgenic steroid, is used as growth promoter in beef cattle. It has been reported to cause declined Vtg concentrations and masculinization in fish. In the near future, many serious problems can be seen in human and wildlife reproduction systems because of EDCs.