Title of article :
Effects of Cd, Cu and Zn on sperm motility indicators of the Caspian lamprey, Caspiomyzon wagneri
Author/Authors :
Eagderi S. Department of Fisheries - Faculty of Natural Resources - University of Tehran - Karaj, Iran , Mojazi Amiri B. Department of Fisheries - Faculty of Natural Resources - University of Tehran - Karaj, Iran , Poorbagher H. Department of Fisheries - Faculty of Natural Resources - University of Tehran - Karaj, Iran , Nasrollah Pourmoghadam M. Department of Fisheries - Faculty of Natural Resources - University of Tehran - Karaj, Iran , Nemati Mobin N. Department of Fisheries - Faculty of Natural Resources - University of Tehran - Karaj, Iran , Pourang N. Iranian Fisheries Science Research Institute (IFSRI) - Agricultural Research Education and Extension Organization (AREEO) - Tehran, Iran
Abstract :
The present study investigated the effects of Cd, Cu and Zn on the sperm motility of
Caspiomyzon wagneri. The sperm of the specimens were exposed to 0.01, 0.1, 1, 10,
100 and 1000 mg L-1 of the heavy metals, and the duration of sperm motility and
percentage of motile sperms were measured using a compound microscope and digital
camera. Based on the results, sperm motility parameters decreased with increasing the
concentrations of heavy metals. A concentration of 1000 mg L-1 of heavy metals
stopped completely the motile sperms. The present study indicated that heavy metals
have detrimental effects on sperm motility and possibly decrease the fertilization and
hatching rates of C. wagneri in the spawning ground, and thus a serious threat to the
survival of this rare and native species.
Keywords :
Heavy metals , Mobility indices , Reproduction Spawning , Pollution
Journal title :
Iranian Journal of Fisheries Sciences
