Scale bars indicate 25 µm.Three images. Two states of sexual reproduction generating auxospores.First:Early state (arrow).Second:Later phase of another couple (arrow). The epivalvae are opened, the cell plasmas have united. Optical cross section, the focal plane is near the hypovalvae.Third:Same phase. The focal plane is higher, the epivalvae become visible.UV = upper valve, LV = lower valve.Please click on < or > on the image edges or on the dots at the bottom edge of the images to browse through the slides!Place name: Tropical freshwater aquarium Latitude: 54.3018013 Longitude: 10.07120132Microscope Zeiss Axioplan, camera Olympus OM-D M5 MKII. DOF images.© Wolfgang Bettighofer,images under Creative Commons License V 3.0 (CC BY-NC-SA).For permission to use of (high resolution) images please contact
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