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Taipale SJ, Ventelä A, Litmanen J, Anttila L. Poor nutritional quality of primary producers and zooplankton driven by eutrophication is mitigated at upper trophic levels. Ecol Evol 2022; 12:e8687. [PMID: 35342549 PMCID: PMC8928886 DOI: 10.1002/ece3.8687] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2021] [Revised: 01/22/2022] [Accepted: 02/07/2022] [Indexed: 12/02/2022] Open
Abstract
Eutrophication and rising water temperature in freshwaters may increase the total production of a lake while simultaneously reducing the nutritional quality of food web components. We evaluated how cyanobacteria blooms, driven by agricultural eutrophication (in eutrophic Lake Köyliöjärvi) or global warming (in mesotrophic Lake Pyhäjärvi), influence the biomass and structure of phytoplankton, zooplankton, and fish communities. In terms of the nutritional value of food web components, we evaluated changes in the ω-3 and ω-6 polyunsaturated fatty acids (PUFA) of phytoplankton and consumers at different trophic levels. Meanwhile, the lakes did not differ in their biomasses of phytoplankton, zooplankton, and fish communities, lake trophic status greatly influenced the community structures. The eutrophic lake, with agricultural eutrophication, had cyanobacteria bloom throughout the summer months whereas cyanobacteria were abundant only occasionally in the mesotrophic lake, mainly in early summer. Phytoplankton community differences at genus level resulted in higher arachidonic acid, eicosapentaenoic acid (EPA), and docosahexaenoic acid (DHA) content of seston in the mesotrophic than in the eutrophic lake. This was also reflected in the EPA and DHA content of herbivorous zooplankton (Daphnia and Bosmina) despite more efficient trophic retention of these biomolecules in a eutrophic lake than in the mesotrophic lake zooplankton. Planktivorous juvenile fish (perch and roach) in a eutrophic lake overcame the lower availability of DHA in their prey by more efficient trophic retention and biosynthesis from the precursors. However, the most efficient trophic retention of DHA was found with benthivorous perch which prey contained only a low amount of DHA. Long-term cyanobacterial blooming decreased the nutritional quality of piscivorous perch; however, the difference was much less than previously anticipated. Our result shows that long-term cyanobacteria blooming impacts the structure of plankton and fish communities and lowers the nutritional quality of seston and zooplankton, which, however, is mitigated at upper trophic levels.
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Affiliation(s)
- Sami Johan Taipale
- Department of Biological and Environmental ScienceUniversity of JyväskyläJyväskyläFinland
| | | | - Jaakko Litmanen
- Department of Biological and Environmental ScienceUniversity of JyväskyläJyväskyläFinland
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Sushchik NN, Borisova EV, Demina Vitkovskaya IA, Makhutova ON, Gladyshev MI. Differences in Fatty Acid Composition between Orb-Weaver Spiders Inhabiting a Riparian Zone and a Steppe Are Associated with the Consumption of Different Chironomid Taxa. DOKL BIOCHEM BIOPHYS 2021; 496:40-43. [PMID: 33689073 DOI: 10.1134/s1607672921010117] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2020] [Revised: 10/09/2020] [Accepted: 10/09/2020] [Indexed: 11/23/2022]
Abstract
Amphibiotic insects, chironomids of the genera Glyptotendipes and Chironomus, which emerged from saline Lake Shira, differed in composition and content of fatty acids, including the essential eicosapentaenoic acid (20:5n-3, EPA), and upon flying out they were concentrated in different territories, the riparian zone and remote arid steppe zone, respectively. Potential consumers of chironomids adults, the orb-weaver spiders Larinoides suspicax, which inhabited both zones, also differed in fatty acid composition. The main difference in their biochemical composition was a significantly higher level of EPA in spiders from the riparian zone that likely to be explained by consumption of the Glyptotendipes adults enriched in this fatty acid and concentrated only within this zone. The higher level of EPA, which is deficient in terrestrial ecosystems, in orb-weaver spiders from the riparian zone of the saline lake may potentially promote a successful survival of the consumers in the arid landscape.
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Affiliation(s)
- N N Sushchik
- Institute of Biophysics, Siberian Branch, Russian Academy of Sciences, Federal Research Center "Krasnoyarsk Science Center of the Siberian Branch of the Russian Academy of Sciences", Krasnoyarsk, Russia. .,Siberian Federal University, Krasnoyarsk, Russia.
| | - E V Borisova
- Siberian Federal University, Krasnoyarsk, Russia
| | | | - O N Makhutova
- Institute of Biophysics, Siberian Branch, Russian Academy of Sciences, Federal Research Center "Krasnoyarsk Science Center of the Siberian Branch of the Russian Academy of Sciences", Krasnoyarsk, Russia.,Siberian Federal University, Krasnoyarsk, Russia
| | - M I Gladyshev
- Institute of Biophysics, Siberian Branch, Russian Academy of Sciences, Federal Research Center "Krasnoyarsk Science Center of the Siberian Branch of the Russian Academy of Sciences", Krasnoyarsk, Russia.,Siberian Federal University, Krasnoyarsk, Russia
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Génier CSV, Guglielmo CG, Mitchell GW, Falconer M, Hobson KA. Nutritional consequences of breeding away from riparian habitats in Bank Swallows: new evidence from multiple endogenous markers. CONSERVATION PHYSIOLOGY 2021; 9:coaa140. [PMID: 33532072 PMCID: PMC7836397 DOI: 10.1093/conphys/coaa140] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/17/2020] [Revised: 12/07/2020] [Accepted: 12/28/2020] [Indexed: 06/01/2023]
Abstract
The Bank Swallow (Riparia riparia), a threatened species in Canada, breeds primarily in banks at lakeshores and rivers and in artificial (typically inland) aggregate mining pits. Inland pits may be ecological traps for this species, but relative dietary trade-offs between these two nesting habitats have not been investigated. The availability of aquatic emergent insects at lakeshores may have associated nutritional benefits for growing nestlings due to increased omega-3 fatty acids (FAs) in prey. We compared the diets of juvenile swallows from lakeshore and inland pit sites using assays of stable isotope values (δ13C, δ15N, δ2H) of feathers, faecal DNA metabarcoding and blood plasma FAs. Colony proximity to Lake Erie influenced the use of aquatic versus terrestrial insects by Bank Swallow adults and juveniles. Feather δ2H was particularly useful as a tracer of aquatic emergent versus terrestrial prey, and inland juveniles had feathers enriched in 2H, reflective of diets composed of fewer aquatic emergent insects. DNA metabarcoding of juvenile and adult faecal material indicated that lakeshore birds consumed more aquatic-emergent chironomids than inland birds. Lakeshore juveniles had elevated plasma omega-3 eicosapentaenoic acid levels compared with inland pit-breeding birds. We discuss the need to consider 'nutritional landscapes' and the importance of this concept in conservation of declining species and populations.
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Affiliation(s)
- Corrine S V Génier
- Department of Biology, University of Western Ontario, 1151 Richmond Street, London, Ontario N6A 3K7, Canada
| | - Christopher G Guglielmo
- Department of Biology, University of Western Ontario, 1151 Richmond Street, London, Ontario N6A 3K7, Canada
| | - Greg W Mitchell
- Environment and Climate Change Canada, Wildlife Research Division, 1125 Colonel By Drive, Ottawa, Ontario K1A 0H3, Canada
| | - Myles Falconer
- Birds Canada, 115 Front Rd., P.O. Box 160, Port Rowan, Ontario N0E 1M0, Canada
| | - Keith A Hobson
- Department of Biology, University of Western Ontario, 1151 Richmond Street, London, Ontario N6A 3K7, Canada
- Environment and Climate Change Canada, Wildlife Research Division, 11 Innovation Blvd., Saskatoon, Saskatchewan S7N 3H5, Canada
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Petrov KA, Dudareva LV, Nokhsorov VV, Stoyanov KN, Makhutova ON. Fatty Acid Content and Composition of the Yakutian Horses and Their Main Food Source: Living in Extreme Winter Conditions. Biomolecules 2020; 10:E315. [PMID: 32079257 PMCID: PMC7072547 DOI: 10.3390/biom10020315] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2020] [Revised: 02/03/2020] [Accepted: 02/11/2020] [Indexed: 12/23/2022] Open
Abstract
: For the first time, seasonal changes in the content of total lipids (TLs) and phospholipids (PLs) were studied in fodder plants growing in Central Yakutia-a perennial cereal, smooth brome (Bromopsis inermis L.), and an annual cereal, common oat (Avena sativa L.). Both species have concentrated TLs and PLs in autumn under cold hardening. In addition, a significant increase in the content of fatty acids (FAs) of B. inermis was observed during the autumn decrease in temperature. The Yakutian horses, which fed on cereals enriched with nutrients preserved by natural cold (green cryo-fodder), accumulated significant amounts of 18:2n-6 and 18:3n-3, the total content of which in cereals was 75% of the total FA content. We found differences in the distribution of these two FAs in different tissues of the horses. Thus, liver was rich in 18:2n-6, while muscle and adipose tissues accumulated mainly 18:3n-3. Such a distribution may indicate different roles of these FAs in the metabolism of the horses. According to FA content, meat of the Yakutian horses is a valuable dietary product.
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Affiliation(s)
- Klim A. Petrov
- Institute for Biological Problems of Cryolithozone of Siberian Branch of the Russian Academy of Sciences, 41 Lenina av., Yakutsk 677000, Russia;
| | - Lyubov V. Dudareva
- Siberian Institute of Plant Physiology and Biochemistry, Siberian Branch of Russian Academy of Sciences, 132 Lermontova str., Irkutsk 664033, Russia;
| | | | - Kirill N. Stoyanov
- Siberian Federal University, 79 Svobodny pr., Krasnoyarsk 660041, Russia;
| | - Olesia N. Makhutova
- Siberian Federal University, 79 Svobodny pr., Krasnoyarsk 660041, Russia;
- Institute of Biophysics of Federal Research Center “Krasnoyarsk Science Center” of Siberian Branch of Russian Academy of Sciences, Akademgorodok, Krasnoyarsk 660036, Russia
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Moyo S. Preliminary Estimations of Insect Mediated Transfers of Mercury and Physiologically Important Fatty Acids from Water to Land. Biomolecules 2020; 10:biom10010129. [PMID: 31940985 PMCID: PMC7023014 DOI: 10.3390/biom10010129] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2019] [Revised: 01/08/2020] [Accepted: 01/08/2020] [Indexed: 12/24/2022] Open
Abstract
Aquatic insects provide an energy subsidy to riparian food webs. However, most empirical studies have considered the role of subsidies only in terms of magnitude (using biomass measurements) and quality (using physiologically important fatty acids), negating an aspect of subsidies that may affect their impact on recipient food webs: the potential of insects to transport contaminants (e.g., mercury) to terrestrial ecosystems. To this end, I used empirical data to estimate the magnitude of nutrients (using physiologically important fatty acids as a proxy) and contaminants (total mercury (Hg) and methylmercury (MeHg)) exported by insects from rivers and lacustrine systems in each continent. The results reveal that North American rivers may export more physiologically important fatty acids per unit area (93.0 ± 32.6 Kg Km-2 year-1) than other continents. Owing to the amount of variation in Hg and MeHg, there were no significant differences in MeHg and Hg among continents in lakes (Hg: 1.5 × 10-4 to 1.0 × 10-3 Kg Km-2 year-1; MeHg: 7.7 × 10-5 to 1.0 × 10-4 Kg Km-2 year-1) and rivers (Hg: 3.2 × 10-4 to 1.1 × 10-3 Kg Km-2 year-1; MeHg: 3.3 × 10-4 to 8.9 × 10-4 Kg Km-2 year-1), with rivers exporting significantly larger quantities of mercury across all continents than lakes. Globally, insect export of physiologically important fatty acids by insect was estimated to be ~43.9 × 106 Kg year-1 while MeHg was ~649.6 Kg year-1. The calculated estimates add to the growing body of literature, which suggests that emerging aquatic insects are important in supplying essential nutrients to terrestrial consumers; however, with the increase of pollutants in freshwater systems, emergent aquatic insect may also be sentinels of organic contaminants to terrestrial consumers.
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Affiliation(s)
- Sydney Moyo
- Department of Oceanography and Coastal Sciences, Louisiana State University, Baton Rouge, LA 70803, USA
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Gladyshev MI, Sushchik NN. Long-chain Omega-3 Polyunsaturated Fatty Acids in Natural Ecosystems and the Human Diet: Assumptions and Challenges. Biomolecules 2019; 9:biom9090485. [PMID: 31547473 PMCID: PMC6770104 DOI: 10.3390/biom9090485] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2019] [Revised: 08/28/2019] [Accepted: 09/07/2019] [Indexed: 01/05/2023] Open
Abstract
Over the past three decades, studies of essential biomolecules, long-chain polyunsaturated fatty acids of the omega-3 family (LC-PUFAs), namely eicosapentaenoic acid (20:5n-3, EPA) and docosahexaenoic acid (22:6n-3, DHA), have made considerable progress, resulting in several important assumptions. However, new data, which continue to appear, challenge these assumptions. Based on the current literature, an attempt is made to reconsider the following assumptions: 1. There are algal classes of high and low nutritive quality. 2. EPA and DHA decrease with increasing eutrophication in aquatic ecosystems. 3. Animals need EPA and DHA. 4. Fish are the main food source of EPA and DHA for humans. 5. Culinary treatment decreases EPA and DHA in products. As demonstrated, some of the above assumptions need to be substantially specified and changed.
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Affiliation(s)
- Michail I Gladyshev
- Institute of Biophysics of Siberian Branch of Russian Academy of Sciences, Akademgorodok, 50/50, Krasnoyarsk 660036, Russia.
- Siberian Federal University, Svobodny av. 79, Krasnoyarsk 660041, Russia.
| | - Nadezhda N Sushchik
- Institute of Biophysics of Siberian Branch of Russian Academy of Sciences, Akademgorodok, 50/50, Krasnoyarsk 660036, Russia.
- Siberian Federal University, Svobodny av. 79, Krasnoyarsk 660041, Russia.
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Preliminary estimation of the export of omega-3 polyunsaturated fatty acids from aquatic to terrestrial ecosystems in biomes via emergent insects. ECOLOGICAL COMPLEXITY 2019. [DOI: 10.1016/j.ecocom.2019.03.007] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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