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Gyrosigma (gyre-o-sig-ma), this is a pennate diatom, and this detail shows the pattern of striae (holes) on the frustule. This square packed pattern to either side of the raphe allows this genus to be distinguished from the superficially similar Pleurosigma. Differential interference contrast.
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Image from type material.
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Lardero, La Rioja, Spain
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Trebabu, Brittany, France
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Pera, Faro, Portugal
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FRom the Bay of Villefranche in March 2013
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Grove, O, Galicia, Spain
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Miranda do Douro, Bragana, Portugal
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Miranda do Douro, Bragana, Portugal
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Valea, Galicia, Espaa
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Original nib drawing made by Frenguelli.
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Gyrosigma fasciola Scale bar indicates 25 µm. The specimen was gathered in the Kieler Förde (German Baltic Sea). Sampling date 4/2018. The image was built up using several photomicrographic frames with manual stacking technique. Images were taken using Zeiss Axioplan with Olympus OM-D M5 MKII. Image under Creative Commons License V 3.0 (CC BY-NC-SA). Place name: Baltic Sea, Kieler Förde, Kiel Fjord (Germany) Latitude: 54,3894126 Longitude: 10,1749055 Multiebenen-Abbildung, manuell gestapelt. Der Messbalken markiert eine Länge von 25 µm. Probe aus der Kieler Förde. Datum der Aufsammlung: 4/2018. Mikrotechnik: Zeiss Axioplan, Kamera: Olympus OM-D M5 MKII. Creative Commons License V 3.0 (CC BY-NC-SA). For permission to use of (high-resolution) images please contact postmaster@protisten.de.
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Gyrosigma spec. Cell in valvar view with optical transversal cut showing the nucleus and oil droplets. Scale bar indicates 50 µm. Sample from Domänental pond near Kronshagen (Kiel, Germany). Images were taken using Zeiss Axioplan with Olympus OM-D M5 MKII.Image under Creative Commons License V 3.0 (CC BY-NC-SA). Place name: Pond Domänental near Kronshagen (Kiel, Germany) Latitude: 54,33211 Longitude: 10,060821 Zelle in Schalenansicht (valvar) mit einem optischer Querschnitt, der Zellkern und Öltröpfchen darstellt. Multiebenen-Abbildung, manuell gestapelt. Der Messbalken markiert eine Länge von 50 µm. Probe aus dem Domänental-Teich bei Kronshagen. Mikrotechnik: Zeiss Axioplan Kamera: Olympus OM-D M5 MKII.Creative Commons License V 3.0 (CC BY-NC-SA). For permission to use of (high-resolution) images please contact postmaster@protisten.de.
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Gyrosigma observed in freshwater sediments in the vicinity of Broome, Western Australia in September 2003. This image was taken using phase contrast optics. This work was supported by the Australian Biological Resources Study.
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Image from type material.
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Logrono, La Rioja, Spain
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Pra, Faro, Portugal
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Puras de Villafranca, Castille and Leon, Spain
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El Palacio De Donana, Andalusia, Spain
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Valea, Galicia, Espaa
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Gyrosigma fasciola Scale bar indicates 25 µm. The specimen was gathered in the Kieler Förde (German Baltic Sea). Sampling date 4/2018. The image was built up using several photomicrographic frames with manual stacking technique. Images were taken using Zeiss Axioplan with Olympus OM-D M5 MKII. Image under Creative Commons License V 3.0 (CC BY-NC-SA). Place name: Baltic Sea, Kieler Förde, Kiel Fjord (Germany) Latitude: 54,3894126 Longitude: 10,1749055 Multiebenen-Abbildung, manuell gestapelt. Der Messbalken markiert eine Länge von 25 µm. Probe aus der Kieler Förde. Datum der Aufsammlung: 4/2018. Mikrotechnik: Zeiss Axioplan, Kamera: Olympus OM-D M5 MKII. Creative Commons License V 3.0 (CC BY-NC-SA). For permission to use of (high-resolution) images please contact postmaster@protisten.de.
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Gyrosigma spec. Cell in valvar view. Scale bar indicates 50 µm. Sample from Domänental pond near Kronshagen (Kiel, Germany). Images were taken using Zeiss Axioplan with Olympus OM-D M5 MKII.Image under Creative Commons License V 3.0 (CC BY-NC-SA). Place name: Pond Domänental near Kronshagen (Kiel, Germany) Latitude: 54,33211 Longitude: 10,060821 Zelle in Schalenansicht (valvar). Multiebenen-Abbildung, manuell gestapelt. Der Messbalken markiert eine Länge von 50 µm. Probe aus dem Domänental-Teich bei Kronshagen. Mikrotechnik: Zeiss Axioplan Kamera: Olympus OM-D M5 MKII.Creative Commons License V 3.0 (CC BY-NC-SA). For permission to use of (high-resolution) images please contact postmaster@protisten.de.
