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Showing 2 results for Water Pollution
Masoumeh Naghibi , Ahmad Gharaei , Mostafa Ghaffari ,
Volume 1, Issue 4 (3-2014)
Abstract
Sperm motility is one of the fundamental indices in sperm quality assessment. This study was carried to determine the sensitivity rate of Schizothorax zarudnyi spermatozoa at different concentrations of copper and lead. To do so, sperm from four male mature fish were exposed to 0, 0.01, 0.1, 1, 10 and 100 mg/L of PbCl2 and CuCl2 separately (6 treatments of CuCl2 and 6 treatments of PbCl2) and sperm motility percentage and total motility duration times were compared. Results show that sperm motility parameters decreased significantly with increase of pollutant concentration. Over time, with decrease of percentage of motile spermatozoa, their sensitivity is evident even to less concentration. Due to the fact that changes of sperm motility can influence the reproduction efficiency rate of breeder, increasing exposure to copper and lead will decrease quality of sperm of Schizothorax zarudnyi in the reproduction time.
Manochehr Nasri ,
Volume 8, Issue 5 (12-2020)
Abstract
In order to investigate phenotypic abnormality in Khorram-rud River in Lorestan province in Iran, 1982 specimens including 13 species were caught. For this purpose, 8 sites were chosen on Khorram-rud River in Khorramabad city from 10 Km upstream to 10 km downstream of the city. Fish were caught using a cast net. Most of the sampled fish were returned to the river if there were no phenotypic abnormalities. A total of 21 cases of phenotypic abnormalities were observed among Capoeta aculeata, while no cases of phenotypic abnormalities were observed among other species. The observed phenotypic abnormalities in this study can be classified into three general categories including Caudal Deformity Syndrome, semi-operculum, and unidentified tissue lesions. Finally, due to the entrance of various urban, industrial, and agricultural pollutants into the Khorram-rud River and the high frequency of phenotypical abnormalities in C. aculeata, this fish can be proposed as a biological indicator for water pollution monitoring in the Khorram-rud River.
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