Characteristics of spawners of chum salmon <i>Oncorhynchus keta</i> from commercial stock of Iturup Island
Chum salmon spawners returned for spawning in the rivers of Prostor and Kurilsky Bays on Iturup Island (Kuril Islands, Sakhalin Region) were examined in the period from September 19 to November 4, 2022. Both females and males had mostly the age 3+ (68.8 % in the Prostor Bay and 62.2 % in the Kurilsk...
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Transactions of the Pacific Research Institute of Fisheries and Oceanography
2023-04-01
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| Series: | Известия ТИНРО |
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| Online Access: | https://izvestiya.tinro-center.ru/jour/article/view/829 |
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| author | A. N. Elnikov O. V. Zelennikov |
| author_facet | A. N. Elnikov O. V. Zelennikov |
| author_sort | A. N. Elnikov |
| collection | DOAJ |
| description | Chum salmon spawners returned for spawning in the rivers of Prostor and Kurilsky Bays on Iturup Island (Kuril Islands, Sakhalin Region) were examined in the period from September 19 to November 4, 2022. Both females and males had mostly the age 3+ (68.8 % in the Prostor Bay and 62.2 % in the Kurilsky Bay). The portion of males in the age 2+ was in 3.8 times higher than the portion of females, with the average value of 19.2 %; the summary portion of older age groups (4+ and 5+) was 15.4 %. Chum salmon spawners were distinguished by relatively small body weight, similar for the fish of the same age in both bays, on average 2.27 and 2.57 kg for females and males of age 3+, respectively, that was lower than the weight of chum salmon spawners in the previous 8 years. |
| format | Article |
| id | doaj-art-d37cd92589984bb2b873e7788ffd3c10 |
| institution | DOAJ |
| issn | 1606-9919 2658-5510 |
| language | Russian |
| publishDate | 2023-04-01 |
| publisher | Transactions of the Pacific Research Institute of Fisheries and Oceanography |
| record_format | Article |
| series | Известия ТИНРО |
| spelling | doaj-art-d37cd92589984bb2b873e7788ffd3c102025-08-20T02:53:50ZrusTransactions of the Pacific Research Institute of Fisheries and OceanographyИзвестия ТИНРО1606-99192658-55102023-04-010014615110.26428/losos_bull17-2023-146-151734Characteristics of spawners of chum salmon <i>Oncorhynchus keta</i> from commercial stock of Iturup IslandA. N. Elnikov0O. V. Zelennikov1Russian Federal Research Institute of Fisheries and OceanographySt. Petersburg State UniversityChum salmon spawners returned for spawning in the rivers of Prostor and Kurilsky Bays on Iturup Island (Kuril Islands, Sakhalin Region) were examined in the period from September 19 to November 4, 2022. Both females and males had mostly the age 3+ (68.8 % in the Prostor Bay and 62.2 % in the Kurilsky Bay). The portion of males in the age 2+ was in 3.8 times higher than the portion of females, with the average value of 19.2 %; the summary portion of older age groups (4+ and 5+) was 15.4 %. Chum salmon spawners were distinguished by relatively small body weight, similar for the fish of the same age in both bays, on average 2.27 and 2.57 kg for females and males of age 3+, respectively, that was lower than the weight of chum salmon spawners in the previous 8 years.https://izvestiya.tinro-center.ru/jour/article/view/829chum salmon<i>oncorhynchus keta</i>iturupcharacteristics of spawners |
| spellingShingle | A. N. Elnikov O. V. Zelennikov Characteristics of spawners of chum salmon <i>Oncorhynchus keta</i> from commercial stock of Iturup Island Известия ТИНРО chum salmon <i>oncorhynchus keta</i> iturup characteristics of spawners |
| title | Characteristics of spawners of chum salmon <i>Oncorhynchus keta</i> from commercial stock of Iturup Island |
| title_full | Characteristics of spawners of chum salmon <i>Oncorhynchus keta</i> from commercial stock of Iturup Island |
| title_fullStr | Characteristics of spawners of chum salmon <i>Oncorhynchus keta</i> from commercial stock of Iturup Island |
| title_full_unstemmed | Characteristics of spawners of chum salmon <i>Oncorhynchus keta</i> from commercial stock of Iturup Island |
| title_short | Characteristics of spawners of chum salmon <i>Oncorhynchus keta</i> from commercial stock of Iturup Island |
| title_sort | characteristics of spawners of chum salmon i oncorhynchus keta i from commercial stock of iturup island |
| topic | chum salmon <i>oncorhynchus keta</i> iturup characteristics of spawners |
| url | https://izvestiya.tinro-center.ru/jour/article/view/829 |
| work_keys_str_mv | AT anelnikov characteristicsofspawnersofchumsalmonioncorhynchusketaifromcommercialstockofiturupisland AT ovzelennikov characteristicsofspawnersofchumsalmonioncorhynchusketaifromcommercialstockofiturupisland |