TO THE METHODOLOGY FOR SEPARATION OF MIGRATING POPULATION COMPLEXES OF THE OKHOTSK SEA PINK SALMON IN THE PACIFIC WATERS AT KURIL ISLANDS USING THE GONAD-SOMATIC INDEX
New method is proposed for operational differentiation of pink salmon runs with different time of spawning and different state of gonads measured quantitatively with a gonad-somatic index. Results of this new method and traditional methods of differentiating are compared. The conception of spatial n...
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| Format: | Article |
| Language: | Russian |
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Transactions of the Pacific Research Institute of Fisheries and Oceanography
2020-03-01
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| Series: | Известия ТИНРО |
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| Online Access: | https://izvestiya.tinro-center.ru/jour/article/view/536 |
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| author | E. A. Shevlyakov M. G. Feldman V. A. Shevlyakov A. N. Kanzeparova |
| author_facet | E. A. Shevlyakov M. G. Feldman V. A. Shevlyakov A. N. Kanzeparova |
| author_sort | E. A. Shevlyakov |
| collection | DOAJ |
| description | New method is proposed for operational differentiation of pink salmon runs with different time of spawning and different state of gonads measured quantitatively with a gonad-somatic index. Results of this new method and traditional methods of differentiating are compared. The conception of spatial niches in the Pacific waters adjacent to Kuril Islands for certain temporal groupings of the Okhotsk Sea pink salmon is critically revised on the base of these new results. The runs cannot be separated using any fixed value of the gonad-somatic index. The zones of different groupings could be spatially overlapped. The method is tested on the data of trawl survey conducted aboard RV Professor Kaganovsky in May-July 2018, during anadromous migration of pink salmon, and shows a high compliance with the regional groupings ratio determined on the data of pink salmon catch in the Okhotsk Sea and their escapement to rivers. Tendency of the late-maturing forms of pink salmon to migrate through the southern Kuril waters is confirmed, whereas the portion of early-maturing pink has increased toward the Ocean. |
| format | Article |
| id | doaj-art-30d1ad077a5a4245bca70bc2eaf8bb4e |
| institution | DOAJ |
| issn | 1606-9919 2658-5510 |
| language | Russian |
| publishDate | 2020-03-01 |
| publisher | Transactions of the Pacific Research Institute of Fisheries and Oceanography |
| record_format | Article |
| series | Известия ТИНРО |
| spelling | doaj-art-30d1ad077a5a4245bca70bc2eaf8bb4e2025-08-20T02:53:47ZrusTransactions of the Pacific Research Institute of Fisheries and OceanographyИзвестия ТИНРО1606-99192658-55102020-03-012001243710.26428/1606-9919-2020-200-24-37499TO THE METHODOLOGY FOR SEPARATION OF MIGRATING POPULATION COMPLEXES OF THE OKHOTSK SEA PINK SALMON IN THE PACIFIC WATERS AT KURIL ISLANDS USING THE GONAD-SOMATIC INDEXE. A. Shevlyakov0M. G. Feldman1V. A. Shevlyakov2A. N. Kanzeparova3Pacific branch of VNIRO (TINRO)Kamchatka branch of VNIRO (KamchatNIRO)Pacific branch of VNIRO (TINRO)Pacific branch of VNIRO (TINRO)New method is proposed for operational differentiation of pink salmon runs with different time of spawning and different state of gonads measured quantitatively with a gonad-somatic index. Results of this new method and traditional methods of differentiating are compared. The conception of spatial niches in the Pacific waters adjacent to Kuril Islands for certain temporal groupings of the Okhotsk Sea pink salmon is critically revised on the base of these new results. The runs cannot be separated using any fixed value of the gonad-somatic index. The zones of different groupings could be spatially overlapped. The method is tested on the data of trawl survey conducted aboard RV Professor Kaganovsky in May-July 2018, during anadromous migration of pink salmon, and shows a high compliance with the regional groupings ratio determined on the data of pink salmon catch in the Okhotsk Sea and their escapement to rivers. Tendency of the late-maturing forms of pink salmon to migrate through the southern Kuril waters is confirmed, whereas the portion of early-maturing pink has increased toward the Ocean.https://izvestiya.tinro-center.ru/jour/article/view/536north-west pacificpink salmongonad-somatic indextrawl surveynumeral model |
| spellingShingle | E. A. Shevlyakov M. G. Feldman V. A. Shevlyakov A. N. Kanzeparova TO THE METHODOLOGY FOR SEPARATION OF MIGRATING POPULATION COMPLEXES OF THE OKHOTSK SEA PINK SALMON IN THE PACIFIC WATERS AT KURIL ISLANDS USING THE GONAD-SOMATIC INDEX Известия ТИНРО north-west pacific pink salmon gonad-somatic index trawl survey numeral model |
| title | TO THE METHODOLOGY FOR SEPARATION OF MIGRATING POPULATION COMPLEXES OF THE OKHOTSK SEA PINK SALMON IN THE PACIFIC WATERS AT KURIL ISLANDS USING THE GONAD-SOMATIC INDEX |
| title_full | TO THE METHODOLOGY FOR SEPARATION OF MIGRATING POPULATION COMPLEXES OF THE OKHOTSK SEA PINK SALMON IN THE PACIFIC WATERS AT KURIL ISLANDS USING THE GONAD-SOMATIC INDEX |
| title_fullStr | TO THE METHODOLOGY FOR SEPARATION OF MIGRATING POPULATION COMPLEXES OF THE OKHOTSK SEA PINK SALMON IN THE PACIFIC WATERS AT KURIL ISLANDS USING THE GONAD-SOMATIC INDEX |
| title_full_unstemmed | TO THE METHODOLOGY FOR SEPARATION OF MIGRATING POPULATION COMPLEXES OF THE OKHOTSK SEA PINK SALMON IN THE PACIFIC WATERS AT KURIL ISLANDS USING THE GONAD-SOMATIC INDEX |
| title_short | TO THE METHODOLOGY FOR SEPARATION OF MIGRATING POPULATION COMPLEXES OF THE OKHOTSK SEA PINK SALMON IN THE PACIFIC WATERS AT KURIL ISLANDS USING THE GONAD-SOMATIC INDEX |
| title_sort | to the methodology for separation of migrating population complexes of the okhotsk sea pink salmon in the pacific waters at kuril islands using the gonad somatic index |
| topic | north-west pacific pink salmon gonad-somatic index trawl survey numeral model |
| url | https://izvestiya.tinro-center.ru/jour/article/view/536 |
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