A risk of the effluents of Diyala River on some ecological and physiological for Qattan Barbus xanthopterus at Tigris River middle of Iraq

Abstract

The effect of the confluence of the Diyala River and the Tigris river on the life of the Barbus xanthopterus was studied. Two sites were selected for the study, water and fish samples were collected monthly for the period from July 2017 to January 2018. Some of the physical and chemical properties of the water were measured, water temperature ranged between 8.6 ° C to 31.3 ° C, dissolved oxygen between 2.3 to 10.2 mg / liter, the pH between 6.9 to 5.5 to 7.6, the salinity of the water ranged between 0.3 to 1 g / liter and turbidity was18.9 to 57.3 brownish naphthalene units. The oxygen biological requirement for water was between 0.6 to 15.2 mg / liter. Forty two specimens of Qattan Barbus xanthopterus were cached, with total length from 22.63 to 40.46 cm and total weight from 117.8 to 1070.3 g. The average age was from 1 to 7 years old. The blood characteristics were measured, and the range of the red blood cells RBC ranged between 1.3 to 5.8 cells x 106/mm3 and for white blood cells WBC between 7.7 to 16.2 cells x 103 / mm3 and the PCV ranged between 17.4 to 29.8% and the Hb blood hemoglobin was between 6 to 9.9 g / dL. Some liver enzymes were also measured in the blood, and their concentration of GOT (AST), GPT (ALT) alkaline phosphatase (ALP) and lactate dehydrogenase (LDH) ranged 38.0 to 875.9 U / L, 1.6 to 26.4 U / L, 9.4 To 83.7 U / L and 1051.8 U / L respectively. The current results conclude that there are clear influences of the Diyala estuary at the Tigris River in the second site, and consequently, tangible effects have appeared on the environment and some biological and physiological characteristics of the fish of the current study.