Juveniles of pink and chum salmon in the southern Okhotsk Sea in their late marine stage (August-October 2012). Distribution, feeding, patterns of growth
Ontogeny of one generation of pink and chum salmons is described for the period after their juveniles redistribution from coastal waters to deep-water areas in the central and southern Okhotsk Sea in August-November, 2012. The juveniles fed very intensively in August when their diet had about 85 % o...
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| Format: | Article |
| Language: | Russian |
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Transactions of the Pacific Research Institute of Fisheries and Oceanography
2014-03-01
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| Series: | Известия ТИНРО |
| Subjects: | |
| Online Access: | https://izvestiya.tinro-center.ru/jour/article/view/289 |
| _version_ | 1797702816286900224 |
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| author | Artem Е. Lazhentsev Olga А. Maznikova |
| author_facet | Artem Е. Lazhentsev Olga А. Maznikova |
| author_sort | Artem Е. Lazhentsev |
| collection | DOAJ |
| description | Ontogeny of one generation of pink and chum salmons is described for the period after their juveniles redistribution from coastal waters to deep-water areas in the central and southern Okhotsk Sea in August-November, 2012. The juveniles fed very intensively in August when their diet had about 85 % of proteins and 15 % of lipids due to prevalence of hyperiids and oikopleuras with low fat content. Their growth rate was high at this stage, and energy expenditure on growth took about a half of the ration (56-63 % for pink salmon and 40 % for chum salmon). The feeding intensity became lower in October, but caloric content of the food increased because of partial replacement of its protein fraction by lipids, which content exeeded 75 %. Linear growth rate decreased in October in 3.8 times for pink salmon and in 1.8 times for chum salmon, it took 21-27 % of food energy for the pink and almost the same portion as in August for the chum. Both feeding activity, growth rate, and fat deposit depended on temperature. Temperature in August was more favorable for feeding and metabolic processes, in particular for pink salmon that was able to consume daily up to 1/10 of its body weight and spend > 50 % of the energy for the growth, but water cooling in October caused lesser feeding, lower metabolism, and slower growth. |
| first_indexed | 2024-03-12T04:56:23Z |
| format | Article |
| id | doaj.art-0f5f37e268db4e2ea835fde08ebadffa |
| institution | Directory Open Access Journal |
| issn | 1606-9919 2658-5510 |
| language | Russian |
| last_indexed | 2024-03-12T04:56:23Z |
| publishDate | 2014-03-01 |
| publisher | Transactions of the Pacific Research Institute of Fisheries and Oceanography |
| record_format | Article |
| series | Известия ТИНРО |
| spelling | doaj.art-0f5f37e268db4e2ea835fde08ebadffa2023-09-03T09:15:08ZrusTransactions of the Pacific Research Institute of Fisheries and OceanographyИзвестия ТИНРО1606-99192658-55102014-03-011761516110.26428/1606-9919-2014-176-51-61289Juveniles of pink and chum salmon in the southern Okhotsk Sea in their late marine stage (August-October 2012). Distribution, feeding, patterns of growthArtem Е. Lazhentsev0Olga А. Maznikova1Тихоокеанский научно-исследовательский рыбохозяйственный центрТихоокеанский научно-исследовательский рыбохозяйственный центрOntogeny of one generation of pink and chum salmons is described for the period after their juveniles redistribution from coastal waters to deep-water areas in the central and southern Okhotsk Sea in August-November, 2012. The juveniles fed very intensively in August when their diet had about 85 % of proteins and 15 % of lipids due to prevalence of hyperiids and oikopleuras with low fat content. Their growth rate was high at this stage, and energy expenditure on growth took about a half of the ration (56-63 % for pink salmon and 40 % for chum salmon). The feeding intensity became lower in October, but caloric content of the food increased because of partial replacement of its protein fraction by lipids, which content exeeded 75 %. Linear growth rate decreased in October in 3.8 times for pink salmon and in 1.8 times for chum salmon, it took 21-27 % of food energy for the pink and almost the same portion as in August for the chum. Both feeding activity, growth rate, and fat deposit depended on temperature. Temperature in August was more favorable for feeding and metabolic processes, in particular for pink salmon that was able to consume daily up to 1/10 of its body weight and spend > 50 % of the energy for the growth, but water cooling in October caused lesser feeding, lower metabolism, and slower growth.https://izvestiya.tinro-center.ru/jour/article/view/289сеголеткигорбушакетатемп ростасуточный пищевой рационбиохимический составэнергетическая ценность |
| spellingShingle | Artem Е. Lazhentsev Olga А. Maznikova Juveniles of pink and chum salmon in the southern Okhotsk Sea in their late marine stage (August-October 2012). Distribution, feeding, patterns of growth Известия ТИНРО сеголетки горбуша кета темп роста суточный пищевой рацион биохимический состав энергетическая ценность |
| title | Juveniles of pink and chum salmon in the southern Okhotsk Sea in their late marine stage (August-October 2012). Distribution, feeding, patterns of growth |
| title_full | Juveniles of pink and chum salmon in the southern Okhotsk Sea in their late marine stage (August-October 2012). Distribution, feeding, patterns of growth |
| title_fullStr | Juveniles of pink and chum salmon in the southern Okhotsk Sea in their late marine stage (August-October 2012). Distribution, feeding, patterns of growth |
| title_full_unstemmed | Juveniles of pink and chum salmon in the southern Okhotsk Sea in their late marine stage (August-October 2012). Distribution, feeding, patterns of growth |
| title_short | Juveniles of pink and chum salmon in the southern Okhotsk Sea in their late marine stage (August-October 2012). Distribution, feeding, patterns of growth |
| title_sort | juveniles of pink and chum salmon in the southern okhotsk sea in their late marine stage august october 2012 distribution feeding patterns of growth |
| topic | сеголетки горбуша кета темп роста суточный пищевой рацион биохимический состав энергетическая ценность |
| url | https://izvestiya.tinro-center.ru/jour/article/view/289 |
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