המועדפים של amayakan

Video: https://youtu.be/COOTI6BgO0E
Sampling location: The soil sample was collected from the bank of a pond on the Bagaryak River, near the water. The soil was wet but gradually dried out.
Date and time of collection: September 8, 2023
The sample was stored in a sealed glass container at room temperature.
On October 23, 2023, at 11 AM, a small amount of this soil was mixed with clean water.
Date and time of observation: October 25, 2023, at 10 AM

Video: https://youtu.be/G4yMvNvUhdw
Sampling location: A water sample was collected from the bank of the Ufa River within the boundaries of Nyazepetrovsk town.
Date and time of collection: 18 Jun 2023 at 6 PM
Date and time of observation: 25 Jun 2023 at 5 PM
The sample was stored at room temperature in a plastic container.

Video: https://youtu.be/U-WuPI9VD50
Sampling location: The soil sample was collected from the bank of a pond on the Bagaryak River, near the water. The soil was wet but gradually dried out.
Date and time of collection: September 8, 2023
The sample was stored in a sealed glass container at room temperature.
On September 22, 2023, at 1 PM, a small amount of this soil was mixed with clean water.
Date and time of observation: September 22, 2023, at 1 PM.

Video: https://youtu.be/IZDmQkRUczo
Sampling location: A water sample was collected from the bank of the Ufa River within the boundaries of Nyazepetrovsk town.
Date and time of collection: 18 Jun 2023 at 6 PM
Date and time of observation: 24 Jun 2023 at 8 AM
The sample was stored at room temperature in a plastic container.

Video: https://youtu.be/OYakkMPRt60
Sampling location: The soil sample was collected from the bank of a pond on the Bagaryak River, near the water. The soil was wet but gradually dried out.
Date and time of collection: September 8, 2023
The sample was stored in a sealed glass container at room temperature.
On November 20, 2023, at 1 PM, a small amount of this soil was mixed with clean water.
Date and time of observation: November 25, 2023, at 8 AM

This is one of three related observations of ciliates: two Stentor and its parasites Sphaerophrya from one water sample. This is an observation of parasitic ciliates (at different stages).

A water sample was taken from the bank of the Vuoksi River. The sample was stored at room temperature and observed one day after collection.

Related Observations:
1st Stentor https://www.inaturalist.org/observations/195742375
2nd Stentor https://www.inaturalist.org/observations/195742590

Video: https://youtu.be/rWhk8K2WvFE

A water sample was taken from the bank of the Vuoksi River. The sample was stored at room temperature and observed one day after collection.

Video: https://youtu.be/eGHWgdZYq3Q

Observation of Surirella librile https://www.inaturalist.org/observations/192091414

Zoospores of the filamentous algae Oedogonium from our freshwater Town Pond. There was quite a bloom of this algae floating on the surface. I observed them emerging from this clear tubular structure. They measure 62.5 um. They emerged and swam around for a short while and then became stationary or exploded.
https://en.m.wikipedia.org/wiki/Oedogonium
Oedogonium is a free-living, green algae that was first discovered by W. Hilse in the freshwater of Poland in 1860. It is a freshwater algae that are both planktonic and benthic in nature. It undergoes both sexual and asexual reproduction.
Asexual reproduction via zoospore is also very common and occurs in vegetative (benthic) cells.[19] Vegetative cells produce zoosporangia – the enclosure in which spores are formed – which give rise to the zoospores. Each zoospore has a small hyaline anterior region, and at the base of this region is a ring of flagella (~150). Once emerged from the zoosporangium, a zoospore is still enveloped by a fragile vesicle, from which it is soon discharged. Following dispersal, the zoospore experiences a short period of motility in which it searches for a substrate. When attached to a substrate, the ring of flagella is lost, and the zoospore begins dividing to form a new filament.
Imaged in Nomarski DIC using Olympus BH2S under SPlan 40x objective plus variable phone cropping on Samsung Galaxy S9+.

Fig. 1-3: Valve view
Fig. 4-6: Girdle view
GIF and Fig. 7-9: A few images as the diatom rotates

A water sample was taken from the bank of the Vuoksi River. The sample was stored at room temperature and observed one day after collection.

Video: https://youtu.be/n7HxWvJmyp4

Observation of Entomoneis ornata https://www.inaturalist.org/observations/192091414