Amoebae species, found to be able to feed on filaments of Oscillatoria sp. A-D -Leptomyxa regia strain LS2; A-B -flattened forms, ingesting floating cyanobacterial filaments; C -floating amoeba, excreting empty remnant of cyanobacterial filament; D -floating amoeba adhered to the filament. E-H -Endostelium sp.; E -locomotive form of the cell; F -locomotive forms containing digestive vacuoles with bacterial filaments in the granuloplasm; G -locomotive cell ingesting a cyanobacterial filament; H -floating amoeba with coiled filament in the cytoplasm. I-L -Thecamoeba sp. strain 51; I -locomotive cell containing digestive vacuoles with cyanobacteria; J-L -various stages of phagocytosis and coiling of cyanobacterial filaments. M-NThecamoeba aesculea strain Val; M -locomotive cell with a coiled filament in the cytoplasm; N -floating amoeba containing a coiled cyanobacterium. O-P -Thecamoeba sp. strain 130; O -locomotive cell showing residual digestive vacuoles; P -floating amoeba containing a small fragment of cyanobacterial filament in the granuloplasm. Scale bars: 20 µm.

Contexts in source publication

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... ability to phagocytize cyanobacterial filaments was noted in five amoeba strains. Three of them, namely Leptomyxa regia strain LS2 (Fig. 1, A-D), Endostelium sp. strain A1.2 ( Fig. 1, E-H) and Nikita S. Kulishkin, Alina A. Surkova, Yelisei S. Mesentsev and Alexey V. Smirnov Thecamoeba sp. strain 51 ( Fig. 1, I-L), were able to feed and multiply on this food source for more than two weeks. The remaining two strains, Thecamoeba cf. aesculea strain Val and Thecamoeba vumurta ...

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... ability to phagocytize cyanobacterial filaments was noted in five amoeba strains. Three of them, namely Leptomyxa regia strain LS2 (Fig. 1, A-D), Endostelium sp. strain A1.2 ( Fig. 1, E-H) and Nikita S. Kulishkin, Alina A. Surkova, Yelisei S. Mesentsev and Alexey V. Smirnov Thecamoeba sp. strain 51 ( Fig. 1, I-L), were able to feed and multiply on this food source for more than two weeks. The remaining two strains, Thecamoeba cf. aesculea strain Val and Thecamoeba vumurta strain 130, died in experimental cultures ...

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... ability to phagocytize cyanobacterial filaments was noted in five amoeba strains. Three of them, namely Leptomyxa regia strain LS2 (Fig. 1, A-D), Endostelium sp. strain A1.2 ( Fig. 1, E-H) and Nikita S. Kulishkin, Alina A. Surkova, Yelisei S. Mesentsev and Alexey V. Smirnov Thecamoeba sp. strain 51 ( Fig. 1, I-L), were able to feed and multiply on this food source for more than two weeks. The remaining two strains, Thecamoeba cf. aesculea strain Val and Thecamoeba vumurta strain 130, died in experimental cultures by the fifth day. In the course of observations, we found several cells of Thecamoeba aesculea containing digestive vacuoles ...

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... multiply on this food source for more than two weeks. The remaining two strains, Thecamoeba cf. aesculea strain Val and Thecamoeba vumurta strain 130, died in experimental cultures by the fifth day. In the course of observations, we found several cells of Thecamoeba aesculea containing digestive vacuoles with spirally twisted cyanobacteria inside (Fig. 1, M), as well as floating cells containing filaments at different stages of lysis ( Fig. 1, N). In cultures of Thecamoeba vumurta, we found cells containing Table 1. List of strains tested for the ability to feed on Oscillatoria sp. Green color indicates strains that successfully fed on cyanobacteria for 20 day, yellow -for 5 days, pink ...

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... cf. aesculea strain Val and Thecamoeba vumurta strain 130, died in experimental cultures by the fifth day. In the course of observations, we found several cells of Thecamoeba aesculea containing digestive vacuoles with spirally twisted cyanobacteria inside (Fig. 1, M), as well as floating cells containing filaments at different stages of lysis ( Fig. 1, N). In cultures of Thecamoeba vumurta, we found cells containing Table 1. List of strains tested for the ability to feed on Oscillatoria sp. Green color indicates strains that successfully fed on cyanobacteria for 20 day, yellow -for 5 days, pink -did not consume Oscillatoria sp. short half-destroyed fragments of cyanobacteria in the ...

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... cultures of Thecamoeba vumurta, we found cells containing Table 1. List of strains tested for the ability to feed on Oscillatoria sp. Green color indicates strains that successfully fed on cyanobacteria for 20 day, yellow -for 5 days, pink -did not consume Oscillatoria sp. short half-destroyed fragments of cyanobacteria in the digestive vacuoles (Fig. 1, O, P). Three amoeba strains survived in the experimental dishes for more than two weeks and demonstrated the ability to live and reproduce using cyanobacteria as a food item. Each of these strains showed its own particular way of feeding on cyanobacterial ...

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... in the control dishes, the biofilm developed normally and tightly adhered to the bottom of the dish (Fig. 3, A-C). When the number of Oscillatoria filaments attached to the bottom of the dish was greatly reduced, we noticed in cultures floating amoeba cells adhered to cyanobacteria from the upper part of the biofilm, floating in the Petri dish (Fig. 1, D). However, we have never seen feeding of the floating amoebae on these ...

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... into a spiral during this process (Fig. 4, G-H). In the digestive vacuole, the cyanobacteria gradually decreased in size and their color changed from green to brown (Fig. 4, J-K). In experimental cultures, we found a large number of floating cells of Endostelium, containing vacuoles with spirally coiled cyanobacterial filaments in the cytoplasm (Fig. 1, H). Visual differences in the density of cyanobacteria in the experimental and control dishes were not found by the 30 th day of the experiment. The cyanobacterial biofilm remained attached to the bottom of the dish in both experimental and control ...

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... ability to phagocytize cyanobacterial filaments was noted in five amoeba strains. Three of them, namely Leptomyxa regia strain LS2 (Fig. 1, A-D), Endostelium sp. strain A1.2 ( Fig. 1, E-H) and Nikita S. Kulishkin, Alina A. Surkova, Yelisei S. Mesentsev and Alexey V. Smirnov Thecamoeba sp. strain 51 ( Fig. 1, I-L), were able to feed and multiply on this food source for more than two weeks. The remaining two strains, Thecamoeba cf. aesculea strain Val and Thecamoeba vumurta ...

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... ability to phagocytize cyanobacterial filaments was noted in five amoeba strains. Three of them, namely Leptomyxa regia strain LS2 (Fig. 1, A-D), Endostelium sp. strain A1.2 ( Fig. 1, E-H) and Nikita S. Kulishkin, Alina A. Surkova, Yelisei S. Mesentsev and Alexey V. Smirnov Thecamoeba sp. strain 51 ( Fig. 1, I-L), were able to feed and multiply on this food source for more than two weeks. The remaining two strains, Thecamoeba cf. aesculea strain Val and Thecamoeba vumurta strain 130, died in experimental cultures ...

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... ability to phagocytize cyanobacterial filaments was noted in five amoeba strains. Three of them, namely Leptomyxa regia strain LS2 (Fig. 1, A-D), Endostelium sp. strain A1.2 ( Fig. 1, E-H) and Nikita S. Kulishkin, Alina A. Surkova, Yelisei S. Mesentsev and Alexey V. Smirnov Thecamoeba sp. strain 51 ( Fig. 1, I-L), were able to feed and multiply on this food source for more than two weeks. The remaining two strains, Thecamoeba cf. aesculea strain Val and Thecamoeba vumurta strain 130, died in experimental cultures by the fifth day. In the course of observations, we found several cells of Thecamoeba aesculea containing digestive vacuoles ...

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... multiply on this food source for more than two weeks. The remaining two strains, Thecamoeba cf. aesculea strain Val and Thecamoeba vumurta strain 130, died in experimental cultures by the fifth day. In the course of observations, we found several cells of Thecamoeba aesculea containing digestive vacuoles with spirally twisted cyanobacteria inside (Fig. 1, M), as well as floating cells containing filaments at different stages of lysis ( Fig. 1, N). In cultures of Thecamoeba vumurta, we found cells containing Table 1. List of strains tested for the ability to feed on Oscillatoria sp. Green color indicates strains that successfully fed on cyanobacteria for 20 day, yellow -for 5 days, pink ...

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... cf. aesculea strain Val and Thecamoeba vumurta strain 130, died in experimental cultures by the fifth day. In the course of observations, we found several cells of Thecamoeba aesculea containing digestive vacuoles with spirally twisted cyanobacteria inside (Fig. 1, M), as well as floating cells containing filaments at different stages of lysis ( Fig. 1, N). In cultures of Thecamoeba vumurta, we found cells containing Table 1. List of strains tested for the ability to feed on Oscillatoria sp. Green color indicates strains that successfully fed on cyanobacteria for 20 day, yellow -for 5 days, pink -did not consume Oscillatoria sp. short half-destroyed fragments of cyanobacteria in the ...

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... cultures of Thecamoeba vumurta, we found cells containing Table 1. List of strains tested for the ability to feed on Oscillatoria sp. Green color indicates strains that successfully fed on cyanobacteria for 20 day, yellow -for 5 days, pink -did not consume Oscillatoria sp. short half-destroyed fragments of cyanobacteria in the digestive vacuoles (Fig. 1, O, P). Three amoeba strains survived in the experimental dishes for more than two weeks and demonstrated the ability to live and reproduce using cyanobacteria as a food item. Each of these strains showed its own particular way of feeding on cyanobacterial ...

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... in the control dishes, the biofilm developed normally and tightly adhered to the bottom of the dish (Fig. 3, A-C). When the number of Oscillatoria filaments attached to the bottom of the dish was greatly reduced, we noticed in cultures floating amoeba cells adhered to cyanobacteria from the upper part of the biofilm, floating in the Petri dish (Fig. 1, D). However, we have never seen feeding of the floating amoebae on these ...

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... into a spiral during this process (Fig. 4, G-H). In the digestive vacuole, the cyanobacteria gradually decreased in size and their color changed from green to brown (Fig. 4, J-K). In experimental cultures, we found a large number of floating cells of Endostelium, containing vacuoles with spirally coiled cyanobacterial filaments in the cytoplasm (Fig. 1, H). Visual differences in the density of cyanobacteria in the experimental and control dishes were not found by the 30 th day of the experiment. The cyanobacterial biofilm remained attached to the bottom of the dish in both experimental and control ...