International Conference on Advances in Natural and Applied Sciences (ICANAS), Antalya, Türkiye, 21 - 23 Nisan 2016, cilt.1726
The population structure of Salmo trutta caspius living in Avnik Brook located in Aras Basin, and some physical and chemical parameters of water were examined. For this purpose, water anf fish samples were taken between February 2010 and August 2010. The temperature of Avnik Brook ranged between 3-22 degrees C and mean temperature was determined as 10,14 degrees C. Chemical parameters of water such as, pH, Ca+2, Mg+2, hardness, water flow rate and water were determined as 7.5; 67.8 mg/L, 15.6 mg/L 7.02 FrS, 2.8 cm3/s respectively. The distribution of age in population varied between 1 and 4, and the an age group was dominant with 38,8 proportion. The population composed of 44,4% males and 55.6%. In our study population by age groups according to the mean fork lengths between 9.8 cm and 16.6 cm, while the average total weights ranged between 16.2 g and 148.1 g. Biotic and a biotic environmental factors, especially in this situation or about the height measurements, the researchers say that originated from their use of the total length. The weight of the basins in the region differs in two age groups of fish fork length of fish in the 4 years age group were not different statistically.