caa a22 4500 445296658 CHVBK 20180317142544.0 cr unu---uuuuu 170323e20101201xx s 000 0 eng 10.1134/S0032945210110135 doi (NATIONALLICENCE)springer-10.1134/S0032945210110135 Assessment of ability of endangered Caspian brown trout, Salmo trutta caspius (Salmonidae) in production of semen with desirable quality [Elektronische Daten] [Saeed Hajirezaee, Bagher Amiri, Ali Mirvaghefi] To assay the effects of stripping frequency on semen characteristics of Caspian brown trout, Salmo trutta caspius, the chemical composition of seminal fluid, sperm production (semen volume, sperm density, spermatocrit,) and sperm motility characteristics (percentage and duration of motility) were investigated over four times stripping during the spawning season. According to data, semen volume, sperm density, osmolality and the concentrations of Na+, Cl−, K+, Ca2+, Mg2+ and total protein gradually decreased by increasing of stripping frequency. The values of glucose and triglyceride had no significant changes over four times stripping. Also, the values of semen pH, the percentage (5 s after activation) and duration of motility were statistically stable until third stripping but a decrease was recorded for these parameters in the fourth stripping. As well as, significant positive correlations were found for sperm density vs. K+, Cl−, Na+, Ca2+, Mg2+, total protein, spermatocrit; the percentage of motile spermatozoa vs. Ca2+, Mg2+, K+, Cl−, Na+, total protein, and also the duration of motility vs. K+, Cl−, total protein and pH. In text, specific objectives of this study have been expressed. Pleiades Publishing, Ltd., 2010 Semen quality nationallicence sperm motility nationallicence sperm density nationallicence sequential stripping nationallicence spawning season nationallicence Caspian brown trout nationallicence Hajirezaee Saeed Department of Fisheries and Environmental Sciences, Faculty of Natural Resources, University of Tehran, Karaj, Iran aut Amiri Bagher Department of Fisheries and Environmental Sciences, Faculty of Natural Resources, University of Tehran, Karaj, Iran aut Mirvaghefi Ali Department of Fisheries and Environmental Sciences, Faculty of Natural Resources, University of Tehran, Karaj, Iran aut Journal of Ichthyology SP MAIK Nauka/Interperiodica 50/11(2010-12-01), 1070-1076 0032-9452 50:11<1070 2010 50 11489 https://doi.org/10.1134/S0032945210110135 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1134/S0032945210110135 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Hajirezaee Saeed Department of Fisheries and Environmental Sciences, Faculty of Natural Resources, University of Tehran, Karaj, Iran aut NATIONALLICENCE 700 1- Amiri Bagher Department of Fisheries and Environmental Sciences, Faculty of Natural Resources, University of Tehran, Karaj, Iran aut NATIONALLICENCE 700 1- Mirvaghefi Ali Department of Fisheries and Environmental Sciences, Faculty of Natural Resources, University of Tehran, Karaj, Iran aut NATIONALLICENCE 773 0- Journal of Ichthyology SP MAIK Nauka/Interperiodica 50/11(2010-12-01), 1070-1076 0032-9452 50:11<1070 2010 50 11489 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer