Sex steroids in the seminal fluid and milt quality indices in the endangered Caspian brown trout,Salmo trutta caspius |
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| Authors: | Hamid Reza Jamalzadeh Maryam Akhundian Milad Kabir Hossein Khara Saeed Hajirezaee |
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| Institution: | 1. Department of Marine Biology, Tonekabon Branch, Islamic Azad University, , Tonekabon, Iran;2. Khorramshahr Marine and Technology University, , Khorramshahr, Iran;3. Department of Fisheries, Faculty of Agriculture Sciences and Natural Resources, Gorgan University, , Gorgan, Iran;4. Department of Fishery Science, Faculty of Natural Resources, Islamic Azad, University of Lahijan, , P.O. Box 1616 Lahijan, Iran;5. Department of Fisheries and Environmental Sciences, Faculty of Natural Resources, University of Tehran, , PO Box 31585‐431 Karaj, Iran |
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| Abstract: | In this study, the relationships between the seminal fluid sex steroids sperm quality parameters (i.e. sperm motility and sperm production were investigated in the endangered Caspian brown trout. According to results, the variation of sex steroid concentrations was comparatively high. The seminal fluid levels of 17α‐Hydroxyprogesterone (OHP) had positive correlation with percentage and duration of sperm motility. Similar correlation was found between the seminal fluid concentration of testosterone (T) and estradiol‐17β (E2) with sperm concentration. As well as, there was no significant correlation between progesterone (P) with sperm quality indices. The significant correlation of some steroids i.e. OHP, T and E2 and sperm quality parameters of Caspian brown trout confirms the key role of these steroids in acquisition of the potential of motility during final stage of the maturation. |
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| Keywords: | seminal fluid sperm quality sex steroids Caspian brown trout |
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