Incubation rate and larvae size of Persian sturgeon (Acipenser persicus Borodin 1897) in relation to sperm restripping |
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| Authors: | Hadiseh Dadras Hossein Khara Shahrouz Baradaran Noveiri |
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| Institution: | 1. Department of Fishery Science, Faculty of Natural Resources, Islamic Azad University of Lahijan, , Lahijan, Iran;2. International Sturgeon Research Institute, , Rasht, Iran |
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| Abstract: | In this study, 11 wild male brood fish were used and their mean ages were 15.08 ± 1.66. The luteinizing hormone‐releasing hormone analogue (LH‐RH‐A2) was used to stimulate twice in few days interval (3–7 days) and then semen samples were stripped. The results showed that there was significant difference among the percentage of motile spermatozoa, sperm density and spermatocrit during two strippings (P < 0.05). The duration of sperm motility in first and second stripping was 315/83 ± 162.16 and 212.5 ± 110.53 s respectively. Also, sperm pH was 8.41 ± 0.53 and 8.05 ± 0.33 in first and second stripping respectively. There was significant differences between hatching rate, as well as larvae size significantly changed in both hatching and initiation of active feeding (P < 0.05). |
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| Keywords: | incubation rate larval size Persian sturgeon stripping |
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