Bdelloidean Rotifers

Adineta (add-in-eat-a), a rotifer (metazoa). Rotifers typically have stiffened body wall. The corona is retracted in the anterior part of the body in this specimen - visible as the pair of elliptic structures just above the V-shape of the mouth. Phase contrast, text by Hendrik Seegers.

This is a bdelloid rotifer (metazoa), body with a stiffened body wall (lorica) usually in elements that will telescope, posterior end often with two spurs. Very common in aquatic habitats especially those which are prone to dry out - like moss, soils and the contents of pitcher plants. They can resist drying because they can perform cryptobiosis - that is they can dry out completely, and the organisms can come back to life when wetted. Usually eat bacteria or suspended protists, using the cilia of the corona at the front end of the body to sweep particles into the front of the body where an armoured mastax or jawed pharynx helps to grind the food. Rotifers are common members of the microbial communities of many aquatic ecosystems. Although they are multicellular animals, they may be only 100 microns long, and so overlap in size with ciliates. They can be confused with ciliates because they use cilia to capture their food. However, they can be distinguished because many have an exoskeleton and a muscular pharyngeal region just behind the head. Phase contrast.

Rotifers typically have stiffened body wall. The corona is retracted in the anterior part of the body in this specimen - visible as the pair of elliptic structures just above the V-shape of the mouth. Phase contrast, text by Hendrik Seegers. Phase contrast.

Scale bars indicate 50 µm.Four images. Image no. 3 and 4 belong together. No. 4 is the marked version of no. 3.First:The focal plane is on the antenna.Second:The focal plane is on the eyespots.Third and fourth:We can see the foot-tail with the two spurs (arrowhead). The foot is partially retracted, which becomes visible through the annulated integument. Eyespots (double headed arrow), trophi (arrow).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 aquariumLatitude: 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 postmaster@protisten.de.For further information about the image, please click here: Link to protisten.de page

Scale bars indicate 50 µm.Four images. Image no. 3 and 4 belong together. No. 4 is the marked version of no. 3.First:The focal plane is on the antenna.Second:The focal plane is on the eyespots.Third and fourth:We can see the foot-tail with the two spurs (arrowhead). The foot is partially retracted, which becomes visible through the annulated integument. Eyespots (double headed arrow), trophi (arrow).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 aquariumLatitude: 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 postmaster@protisten.de.For further information about the image, please click here: Link to protisten.de page

Scale bars indicate 50 µm.Four images. Image no. 3 and 4 belong together. No. 4 is the marked version of no. 3.First:The focal plane is on the antenna.Second:The focal plane is on the eyespots.Third and fourth:We can see the foot-tail with the two spurs (arrowhead). The foot is partially retracted, which becomes visible through the annulated integument. Eyespots (double headed arrow), trophi (arrow).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 aquariumLatitude: 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 postmaster@protisten.de.For further information about the image, please click here: Link to protisten.de page

Scale bars indicate 50 µm.Four images. Image no. 3 and 4 belong together. No. 4 is the marked version of no. 3.First:The focal plane is on the antenna.Second:The focal plane is on the eyespots.Third and fourth:We can see the foot-tail with the two spurs (arrowhead). The foot is partially retracted, which becomes visible through the annulated integument. Eyespots (double headed arrow), trophi (arrow).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 aquariumLatitude: 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 postmaster@protisten.de.For further information about the image, please click here: Link to protisten.de page

Sampling date 05/2022. Scale bars indicate 100 µm.Eight images, four image couples without and with marking arrows.First couple:Integument covered by brown detritus, ramate trophy (arrow). Second couple:Eye spots (arrowhead), corona (double arrowhead).Third couple:Integument covered by brown detritus, ramate trophy (arrow). Fourth couple:Eye spots (arrowhead), corona (double arrowhead).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: Creek in Oder valley 100 km north east of Berlin (Germany)  Latitude: 53.135032     Longitude: 14.348738Stereo microscope Olympus SZX16/Planapo 2.0x, 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 postmaster@protisten.de.For further information about the image, please click here: Link to protisten.de page

Sampling date 05/2022. Scale bars indicate 100 µm.Eight images, four image couples without and with marking arrows.First couple:Integument covered by brown detritus, ramate trophy (arrow). Second couple:Eye spots (arrowhead), corona (double arrowhead).Third couple:Integument covered by brown detritus, ramate trophy (arrow). Fourth couple:Eye spots (arrowhead), corona (double arrowhead).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: Creek in Oder valley 100 km north east of Berlin (Germany)  Latitude: 53.135032     Longitude: 14.348738Stereo microscope Olympus SZX16/Planapo 2.0x, 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 postmaster@protisten.de.For further information about the image, please click here: Link to protisten.de page

Sampling date 05/2022. Scale bars indicate 100 µm.Eight images, four image couples without and with marking arrows.First couple:Integument covered by brown detritus, ramate trophy (arrow). Second couple:Eye spots (arrowhead), corona (double arrowhead).Third couple:Integument covered by brown detritus, ramate trophy (arrow). Fourth couple:Eye spots (arrowhead), corona (double arrowhead).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: Creek in Oder valley 100 km north east of Berlin (Germany)  Latitude: 53.135032     Longitude: 14.348738Stereo microscope Olympus SZX16/Planapo 2.0x, 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 postmaster@protisten.de.For further information about the image, please click here: Link to protisten.de page

Sampling date 05/2022. Scale bars indicate 100 µm.Eight images, four image couples without and with marking arrows.First couple:Integument covered by brown detritus, ramate trophy (arrow). Second couple:Eye spots (arrowhead), corona (double arrowhead).Third couple:Integument covered by brown detritus, ramate trophy (arrow). Fourth couple:Eye spots (arrowhead), corona (double arrowhead).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: Creek in Oder valley 100 km north east of Berlin (Germany)  Latitude: 53.135032     Longitude: 14.348738Stereo microscope Olympus SZX16/Planapo 2.0x, 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 postmaster@protisten.de.For further information about the image, please click here: Link to protisten.de page

Sampling date 05/2022. Scale bars indicate 100 µm.Eight images, four image couples without and with marking arrows.First couple:Integument covered by brown detritus, ramate trophy (arrow). Second couple:Eye spots (arrowhead), corona (double arrowhead).Third couple:Integument covered by brown detritus, ramate trophy (arrow). Fourth couple:Eye spots (arrowhead), corona (double arrowhead).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: Creek in Oder valley 100 km north east of Berlin (Germany)  Latitude: 53.135032     Longitude: 14.348738Stereo microscope Olympus SZX16/Planapo 2.0x, 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 postmaster@protisten.de.For further information about the image, please click here: Link to protisten.de page

Sampling date 05/2022. Scale bars indicate 100 µm.Eight images, four image couples without and with marking arrows.First couple:Integument covered by brown detritus, ramate trophy (arrow). Second couple:Eye spots (arrowhead), corona (double arrowhead).Third couple:Integument covered by brown detritus, ramate trophy (arrow). Fourth couple:Eye spots (arrowhead), corona (double arrowhead).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: Creek in Oder valley 100 km north east of Berlin (Germany)  Latitude: 53.135032     Longitude: 14.348738Stereo microscope Olympus SZX16/Planapo 2.0x, 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 postmaster@protisten.de.For further information about the image, please click here: Link to protisten.de page

Sampling date 05/2022. Scale bars indicate 100 µm.Eight images, four image couples without and with marking arrows.First couple:Integument covered by brown detritus, ramate trophy (arrow). Second couple:Eye spots (arrowhead), corona (double arrowhead).Third couple:Integument covered by brown detritus, ramate trophy (arrow). Fourth couple:Eye spots (arrowhead), corona (double arrowhead).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: Creek in Oder valley 100 km north east of Berlin (Germany)  Latitude: 53.135032     Longitude: 14.348738Stereo microscope Olympus SZX16/Planapo 2.0x, 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 postmaster@protisten.de.For further information about the image, please click here: Link to protisten.de page

Sampling date 05/2022. Scale bars indicate 100 µm.Eight images, four image couples without and with marking arrows.First couple:Integument covered by brown detritus, ramate trophy (arrow). Second couple:Eye spots (arrowhead), corona (double arrowhead).Third couple:Integument covered by brown detritus, ramate trophy (arrow). Fourth couple:Eye spots (arrowhead), corona (double arrowhead).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: Creek in Oder valley 100 km north east of Berlin (Germany)  Latitude: 53.135032     Longitude: 14.348738Stereo microscope Olympus SZX16/Planapo 2.0x, 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 postmaster@protisten.de.For further information about the image, please click here: Link to protisten.de page