Oncorhynchus mykiss is amongst the most important species in internal water fish breeding. O. mykiss having very high economical value is largely used in acute toxicity tests. The target of this study is to elucidate the genotoxic effect of CuCl2 upon O. mykiss. The bio assay was carried out in triplicate. The 96h LC50 value was found to be 0.48 mg/L (0.43-0.54 mg/L) from the literature and the sublethal concentration was taken as 0.048 mg/L as the 1/10 of this value. The blood samples taken for the determination hematocrit level were centrifuged at 11500 rpm for 4 minutes. Micronucleus test (MN) was carried out using blood preparations obtained. The mean MN values of the experimental group were found to be higher than those of control group. The hematocrit level of the control and the experimental groups were found to be 29.91 % and 25.01 % respectively. The study reveals that the MN frequencies of O. mykiss species in the experimental group was observed to be higher than those of experimental group while the hematocrit level of the control group was found to be higher than the experiential group. These data clearly show that the CuCl2 has a high level toxic effect upon O. mykiss.

The aim of this study is to determine the quality performance of 30 different bread wheat varieties developed for Eskiþehir ecological conditions. In the study, thousand grain weight, grain protein ratio and grain hardness, zeleny sedimentation, wet gluten content and gluten index, hectoliter weight, moisture content, the amount of ash determination, falling number, glutenin band pattern, gliadin band pattern properties were investigated. The study was carried out in the laboratories of the Department of Field Crops of the Agricultural Faculty of ESOGÜ. In this study, quality characteristics of 30 bread wheat varieties were examined and their performances were revealed. According to the results obtained in our study, Konya, Altay, Alpu, Kutluk, Bagci and Seyhan bread wheat varieties exhibited a higher quality ratio compared to others with a higher quality performance. In addition, the most stable varieties in terms of parameters were determined as Baðcý, Ýkizce, Konya, Sultan, Þanlý and Altay varieties.

The purpose of this study was to investigate the morphometric and meristic features, length- weight relation and the condition factor of Squalius pursakensis (Hankó, 1925) population living in Bayýndýr stream, a branch of Sakarya River. The study was carried out upon 46 S. pursakensis samples caught between April-November 2017. The fish were caught by the use of 12 volt DC 5 A Samus brand 725 MP and PWM2 model electro-shocker device and scoops with various mesh sizes. The weight, total length and the variation parameter of their anatomic and meristic properties, and the ratio of the anatomic features to the standard length were calculated. The b value of the weight-length relation which reflects the success in the adaption of the S. pursakensis population to the locality and the correlation coefficient were found to be 2.936 and 0.9052 respectively. The condition factor was calculated to be C=1.0461±0.1042 (0.7939-1.3652). It is recommended that the bioecological features of S. pursakensis population living in Bayýndýr stream should be constantly monitored due to the fact that the environmental pollution has been observed to reach threatening dimensions.

Benthic mud samples were taken with a hand scoop along the coastline surrounding Çatoren Dam. As a result of the examination of the mud samples, Annelida, Gammaridae, Ephemeroptera, Odonata, Chironomidae and Trichoptera samples were determined. Very few Gastropoda and Hydracarina specimens were found.