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crseaquistDescripción
Gathered dry leaves on 2024-02-23. Parts of the leaves were transfered to a petri dish immediately.
Length of body: .24mm
Length of antennae: .22mm
Width of head: .1mm
Width of body: .11mm
Fotos / Sonidos
Autor
crseaquistDescripción
Gathered dry leaves on 2024-02-23 and stored in water.
Here are some videos:
https://youtu.be/8DMTa0ZruLc
https://youtu.be/izC2XI3pRPY
https://youtu.be/1Q_9wdLj5pc
I think the videos seem to show it is an eruptive morphotype.
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Género ColpodaAutor
crseaquistDescripción
Gathered dry leaves on 2024-02-23 and stored in water.
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Nemátodos (Filo Nematoda)Autor
crseaquistDescripción
Pieces of leaves gathered from the ground and placed on petri dish.
Fotos / Sonidos
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crseaquistDescripción
A large mature sporangium formed from a large plasmodium in a petri dish. The second image shows individual spores after they were moved to a slide. Last image possibly shows germination, the beginning of the emergence of a haploid amoeba.
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Género ColpodaAutor
crseaquistDescripción
Gathered dry leaves on 2024-02-23 and stored in water.
Two daughters emerging from a division cyst:
- Initial observation of cyst with another individual
- 2 minutes later
- 18 minutes later
- 77 minutes later
- 84 minutes later
- 140 minutes later
- 153 minutes later
- 154 minutes later 1st daughter emerges
- 155 minutes later
- 162 minutes later
- 163 minutes later 2nd daughter emerges
- 2nd daughter swims away
Video: https://youtu.be/vntikKDmSDE
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Género ColpodaAutor
crseaquistDescripción
Gathered dry leaves on 2024-02-23 and stored in water.
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Orden SessilidaAutor
crseaquistDescripción
Gathered dry leaves on 2024-02-23 and stored in water.
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Género ColpodaAutor
crseaquistDescripción
Gathered dry leaves on 2024-02-23 and stored in water.
Fotos / Sonidos
Autor
crseaquistDescripción
Water sample taken from the edge of a freshwater playa on 2023-12-30 using a turkey baster.
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Género MayorellaAutor
crseaquistDescripción
Water sample taken from the edge of a freshwater playa on 2024-01-28 using a turkey baster.
Fotos / Sonidos
Autor
crseaquistDescripción
Water sample taken from the edge of a freshwater playa on 2024-01-28 using a turkey baster.
Fotos / Sonidos
Autor
crseaquistDescripción
Water sample taken from the edge of a freshwater playa on 2023-12-30 using a turkey baster.
Gliding and swimming forms:
Length of cell: 40 µm
Width of cell: 12 µm
Length of flagellum: 120 µm
Here is a video showing the organism changing from stationary to gliding to swimming forms:
https://youtu.be/6rgXXILDj8I
See observation https://www.inaturalist.org/observations/198088142 which shows a stationary form where movement is exceedingly slow by “eruptive” lobopodia.
Recently this organism has been sequenced:
“Phylogenetic position of the pelobiont Mastigamoeba aspera and revision of the family Mastigamoebidae (Archamoebae, Pelobiontida)” by Ludmila V. Chistyakova, et. al. (see https://www.sciencedirect.com/science/article/abs/pii/S0932473923000743?via%3Dihub)
This work has resulted in changes to the taxonomy and the introduction of new subfamilies, etc.
Fotos / Sonidos
Autor
crseaquistDescripción
Water sample taken from the edge of a freshwater playa on 2023-12-30 using a turkey baster.
Flagellated amoeba crawling very slowly. (Mastigamoba, Type M. aspera Schulze 1875)
https://youtu.be/aYzgIXkhUx0
“Phylogenetic position of the pelobiont Mastigamoeba aspera and revision of the family Mastigamoebidae (Archamoebae, Pelobiontida)” by Ludmila V. Chistyakova, et. al. (see https://www.sciencedirect.com/science/article/abs/pii/S0932473923000743?via%3Dihub)
Fotos / Sonidos
Autor
crseaquistDescripción
Water sample taken from the edge of a freshwater playa on 2024-01-28 using a turkey baster.
Length: 90 µm
Width: 45 µm
Trophi: 32 µm
Toes: 14 µm
Ratios: L/TL: 6.4
Two eyespots. Type C virgate trophi.
- Dorsal view shows the two eyespots and trophus.
- Lateral view showing toes.
- Another lateral view.
- Remainder of images show various views of the trophus.
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Filo CercozoaAutor
crseaquistDescripción
Water sample taken from the edge of a freshwater playa on 2023-12-07 using a turkey baster.
The images show the flattened ovoid shape of the test with a lens like cross section. No rod like spines are visible. There do appear to be xenosomes. The third image seems to show a CV and nucleus. It seems to be between 30 and 40 microns long.
Videos:
https://youtu.be/rNY33wLxCXo
https://youtu.be/BZW5JillJPo
Fotos / Sonidos
Autor
crseaquistDescripción
Water sample taken from the edge of a freshwater playa on 2023-12-07 using a turkey baster.
Fotos / Sonidos
Autor
crseaquistDescripción
Water sample taken from the edge of a freshwater playa on 2023-12-07 using a turkey baster.
About 360 microns long.
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Filo CercozoaAutor
crseaquistDescripción
Water sample taken from the edge of a freshwater playa on 2023-12-07 using a turkey baster.
Video: https://youtu.be/f22Nib6qYbg
Fotos / Sonidos
Autor
crseaquistDescripción
Water sample taken from the edge of a freshwater playa on 2023-12-07 using a turkey baster.
From 1st image to last was about 25 minutes. Unfortunately I lost them when I tried to rehydrate the slide, so I never saw them actually separate.
Fotos / Sonidos
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crseaquistDescripción
Water sample (freshwater) was taken on 2023-04-09 using a turkey baster.
Two different individuals in the same sample.
To me looks like Lens-like morphotype.
Fotos / Sonidos
Autor
crseaquistDescripción
Water sample taken from the edge of a freshwater playa on 2023-12-07 using a turkey baster.
Appears to me to be Fan-shaped morphotype.
Here is a video of a similar individual in the same sample: https://youtu.be/gNJhlXhcj-M
Fotos / Sonidos
Autor
crseaquistDescripción
Water sample taken from the edge of a stagnate freshwater playa on 2023-11-06 using a turkey baster.
i. Diameter: 133 µm
ii. Aperture: 59 µm
iii. Height: ? µm
iv. A/D: 0.44
Does image 4 really show so many nuclei?
What is image 5 showing?
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Netzelia gramenAutor
crseaquistDescripción
Water sample taken from the edge of a stagnate freshwater playa on 2023-11-06 using a turkey baster.