GAMETHOGENESIS OF PACIFIC SALMONS. 1. DEVELOPMENT OF GONAD IN YOUNG CHUM SALMON ONCORHYNCHUS KETA WALBAUM UNDER VARIOUS TEMPERATURE REGIMES
Early stages of gametogenesis in young chum salmon are investigated under various temperature regimes at three fish farms of Sakhalin region and in laboratory conditions. In all cases, sex differentiation started after the mass hatching, the age of differentiation varied from 65 to 213 days, but the...
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| Format: | Article |
| Language: | Russian |
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Transactions of the Pacific Research Institute of Fisheries and Oceanography
2019-09-01
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| Series: | Известия ТИНРО |
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| Online Access: | https://izvestiya.tinro-center.ru/jour/article/view/501 |
| _version_ | 1797696661680553984 |
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| author | O. V. Zelennikov |
| author_facet | O. V. Zelennikov |
| author_sort | O. V. Zelennikov |
| collection | DOAJ |
| description | Early stages of gametogenesis in young chum salmon are investigated under various temperature regimes at three fish farms of Sakhalin region and in laboratory conditions. In all cases, sex differentiation started after the mass hatching, the age of differentiation varied from 65 to 213 days, but the sum of accumulated degree-days was rather stable — from 620.6 to 669.1. The period from the beginning of sex differentiation to the beginning of previtellogenesis lasted 27–144 days depending on conditions, even for fish in the same fish farm. The lower was the water temperature after the beginning of sex differentiation, the smaller sum of degree-days was accumulated by fish before the beginning of previtellogenic growth of oocytes and the shorter was the period of oocyte growth before the fish release from the farm. The period of previtellogenesis in chum salmon always began before the end of larval period, when weight of the yolk sac was from 1.8 to 18.2 % of the total body weight. |
| first_indexed | 2024-03-12T03:29:35Z |
| format | Article |
| id | doaj.art-24abe27385fe44f19416e30478ac3cb2 |
| institution | Directory Open Access Journal |
| issn | 1606-9919 2658-5510 |
| language | Russian |
| last_indexed | 2024-03-12T03:29:35Z |
| publishDate | 2019-09-01 |
| publisher | Transactions of the Pacific Research Institute of Fisheries and Oceanography |
| record_format | Article |
| series | Известия ТИНРО |
| spelling | doaj.art-24abe27385fe44f19416e30478ac3cb22023-09-03T13:29:19ZrusTransactions of the Pacific Research Institute of Fisheries and OceanographyИзвестия ТИНРО1606-99192658-55102019-09-01198320922010.26428/1606-9919-2019-198-209-220475GAMETHOGENESIS OF PACIFIC SALMONS. 1. DEVELOPMENT OF GONAD IN YOUNG CHUM SALMON ONCORHYNCHUS KETA WALBAUM UNDER VARIOUS TEMPERATURE REGIMESO. V. Zelennikov0Санкт-Петербургский государственный университетEarly stages of gametogenesis in young chum salmon are investigated under various temperature regimes at three fish farms of Sakhalin region and in laboratory conditions. In all cases, sex differentiation started after the mass hatching, the age of differentiation varied from 65 to 213 days, but the sum of accumulated degree-days was rather stable — from 620.6 to 669.1. The period from the beginning of sex differentiation to the beginning of previtellogenesis lasted 27–144 days depending on conditions, even for fish in the same fish farm. The lower was the water temperature after the beginning of sex differentiation, the smaller sum of degree-days was accumulated by fish before the beginning of previtellogenic growth of oocytes and the shorter was the period of oocyte growth before the fish release from the farm. The period of previtellogenesis in chum salmon always began before the end of larval period, when weight of the yolk sac was from 1.8 to 18.2 % of the total body weight.https://izvestiya.tinro-center.ru/jour/article/view/501кетасахалинская областьсеменникияичникиооцитыдифференцировка пола |
| spellingShingle | O. V. Zelennikov GAMETHOGENESIS OF PACIFIC SALMONS. 1. DEVELOPMENT OF GONAD IN YOUNG CHUM SALMON ONCORHYNCHUS KETA WALBAUM UNDER VARIOUS TEMPERATURE REGIMES Известия ТИНРО кета сахалинская область семенники яичники ооциты дифференцировка пола |
| title | GAMETHOGENESIS OF PACIFIC SALMONS. 1. DEVELOPMENT OF GONAD IN YOUNG CHUM SALMON ONCORHYNCHUS KETA WALBAUM UNDER VARIOUS TEMPERATURE REGIMES |
| title_full | GAMETHOGENESIS OF PACIFIC SALMONS. 1. DEVELOPMENT OF GONAD IN YOUNG CHUM SALMON ONCORHYNCHUS KETA WALBAUM UNDER VARIOUS TEMPERATURE REGIMES |
| title_fullStr | GAMETHOGENESIS OF PACIFIC SALMONS. 1. DEVELOPMENT OF GONAD IN YOUNG CHUM SALMON ONCORHYNCHUS KETA WALBAUM UNDER VARIOUS TEMPERATURE REGIMES |
| title_full_unstemmed | GAMETHOGENESIS OF PACIFIC SALMONS. 1. DEVELOPMENT OF GONAD IN YOUNG CHUM SALMON ONCORHYNCHUS KETA WALBAUM UNDER VARIOUS TEMPERATURE REGIMES |
| title_short | GAMETHOGENESIS OF PACIFIC SALMONS. 1. DEVELOPMENT OF GONAD IN YOUNG CHUM SALMON ONCORHYNCHUS KETA WALBAUM UNDER VARIOUS TEMPERATURE REGIMES |
| title_sort | gamethogenesis of pacific salmons 1 development of gonad in young chum salmon oncorhynchus keta walbaum under various temperature regimes |
| topic | кета сахалинская область семенники яичники ооциты дифференцировка пола |
| url | https://izvestiya.tinro-center.ru/jour/article/view/501 |
| work_keys_str_mv | AT ovzelennikov gamethogenesisofpacificsalmons1developmentofgonadinyoungchumsalmononcorhynchusketawalbaumundervarioustemperatureregimes |