ОСОБЛИВОСТІ ХАРЧУВАННЯ ЧОРНОМОРСЬКОГО ШПРОТУ SPRATTUS SPRATTUS PHALERICUS (RISSO) (PISCES: CLUPEIDAE) І ФОРМУВАННЯ ЙОГО НАГУЛЬНИХ СКУПЧЕНЬ
Materials of the expedition carried out on research vessels „D. Stefanov” and „S.Osipenko” in July – August, 1992, and May, 1993, on the north-western and north-eastern Black Sea shelf were used. The nature of Black Sea sprat nutrition and distribution in different feeding conditions were studied. I...
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| Datum: | 2023 |
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| Hauptverfasser: | , |
| Format: | Artikel |
| Sprache: | Ukrainisch |
| Veröffentlicht: |
Marine Ecological Journal
2023
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| Schlagworte: | |
| Online Zugang: | https://mej.od.ua/index.php/mej/article/view/440 |
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| Назва журналу: | Marine Ecological Journal |
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Marine Ecological Journal| Zusammenfassung: | Materials of the expedition carried out on research vessels „D. Stefanov” and „S.Osipenko” in July – August, 1992, and May, 1993, on the north-western and north-eastern Black Sea shelf were used. The nature of Black Sea sprat nutrition and distribution in different feeding conditions were studied. Importance of separate components of fodder zooplankton in the ration formation of sprat of different size groups was shown. High specialization in nutrition of large sprat individuals (fish of older age) was revealed. Correlation coefficient between the density of fish accumulations of older age groups and concentrations of cold water crustaceans in the layer the bottom – 25 m, 50 – 25 m, was 0.90. It is supposed that recent worsening of fishery base of sprat trawling fishery was conditioned by reduction of development of fodder zooplankton cold water forms. |
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