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Content of polyunsaturated fatty acids essential for fish nutrition in zoobenthos species / O. N. Makhutova [et al.] // Freshwater Sci. - 2016. - Vol. 35, Is. 4. - P1222-1234, DOI 10.1086/688760
. - ISSN 2161-9549
Кл.слова (ненормированные):
Fatty acids -- Fish -- Food quality -- Invasion -- Invertebrates -- Bryozoa -- Coleoptera -- Crustacea -- Dytiscus -- Ephemeroptera -- Gammaridae -- Hirudinea -- Insecta -- Invertebrata -- Mollusca -- Plumatella emarginata -- Polychaeta -- Trichoptera -- Turbellaria
Аннотация: Content of eicosapentaenoic acid (EPA, 20 : 5n-3) and docosahexaenoic acid (DHA, 22 : 6n-3) and the n-3/n-6 ratio are important indicators of nutritive value of aquatic invertebrates as food for fish. We studied fatty acid (FA) content and composition of 68 zoobenthic species. Benthic invertebrates differed significantly in their contents of EPA and DHA and n-3/n-6 ratios. The most valuable food for fish were Insecta, especially Ephemeroptera and Trichoptera, Gammaridae, and Turbellaria (Dendrocaelopsis sp.). The invertebrates of low food quality for fish were Hirudinea, Mollusca, Oligochaeta, Bryozoa (Plumatella emarginata), and Coleoptera (Dytiscus lapponicus). Our data suggest that the recent and ongoing global replacement of native species, mainly Insecta, by invaders, mostly represented by Mollusca, Crustacea, Polychaeta, Oligochaeta, Bryozoa, and Hirudinea, probably will reduce the nutritive value of food sources for benthivorous fish. In addition, some of the taxa studied have peculiar FAs, which may be useful as their markers in trophic webs. Thus, 20 : 1n-13, 20 : 2n-6, 22 : 5n-3, and 22 : 6n-3 are likely to be considered markers of Mollusca, Hirudinea, Turbellaria, and Gammaridae, respectively, for tracing food webs in freshwater ecosystems. © 2016 by The Society for Freshwater Science.
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Держатели документа:
Institute of Biophysics, Siberian Branch of Russian Academy of Sciences, Akademgorodok, Krasnoyarsk, Russian Federation
Siberian Federal University, Svobodny Av. 79, Krasnoyarsk, Russian Federation
Institute of Problems of Development of the North, Siberian Branch of Russian Academy of Sciences, Malygina Str., Tyumen, Russian Federation
Institute of Biology, Komi Scientific Center, Ural Division, Russian Academy of Science, 28 Kommunisticheskaya Str., Syktyvkar, Russian Federation
Institute for Biology of Inland Waters, Russian Academy of Science, Borok, Russian Federation
Доп.точки доступа:
Makhutova, O. N.; Shulepina, S. P.; Sharapova, T. A.; Dubovskaya, O. P.; Sushchik, N. N.; Baturina, M. A.; Pryanichnikova, E. G.; Kalachova, G. S.; Gladyshev, M. I.
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