Photos / Sounds

Observer

mc_agricola

Date

June 5, 2024 06:42 PM MSK

Description

Periphyton from an intermediate swamp; pH = 6.5.

Chaetonotus - Photo (c) Proyecto Agua, some rights reserved (CC BY-NC-SA)
peptolab's ID: Genus Chaetonotus, a member of Gastrotrichs (Phylum Gastrotricha)
Added on June 11, 2024
Supporting

Photos / Sounds

Date

November 6, 2023 09:34 AM MSK

Description

Video: https://youtu.be/Dq73nLMHHuI

Sampling location: A water sample was collected from the wall of the bathtub adjacent to the wall, in water residues among fibres and organic debris.
Date and time of collection and observation: 6 Nov 2023 at 9 AM
All images and videos are of the same population of Colpoda ciliates.

Colpoda steinii Maupas, 1883

Diagnosis of the organisms observed:
• body reniform, dorsal side convex, ventral side almost straight
• length 25–39 µm
• apical keel with ~6 ribs
• macronucleus with one, central nucleolus
• mouth opening with a right and left field of polykineties
• cilia of the left polykinetid are long, forming a “beard”
• contractile vacuole terminal
• two caudal cilia
• flexible cell
• crystalline granules are present in the cells, visible under polarised light
• feeding on bacteria
• the only ciliate species living in the specimen

References:
Colpodea (Ciliophora) (108, Fig. 53 c, 57 a-g, 58 c, d, 66 a—p, 67 a-k, 68 a-t, 69 a-z, 70 a-j, 71 a—m, Tab. 14, 15) by W.Foissner (1993)

Ciliated protozoa - an illustrated guide to the species used as biological indicators in freshwater biology by Hartmut Bick (62, Fig. 36) (1972)

Observation by Dr. Martin Kreutz https://realmicrolife.com/colpoda-steinii/

Colpoda steinii - Photo (c) Igor Shelpiakov, some rights reserved (CC BY), uploaded by Igor Shelpiakov
peptolab's ID: Colpoda steinii, a member of Ciliates (Phylum Ciliophora)
Added on May 30, 2024
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Photos / Sounds

Observer

bdstaylor

Date

September 6, 2023 07:01 AM EDT

Description

A testate amoeba from a forest fen in Wakefield, Quebec. The specimen was air-dried and imaged in a scanning electron microscope at the Canadian Museum of Nature.

The image shows two features that differentiate Galeripora from its cousin Arcella: 1) an organic coating on the outer ventral surface of the shell, obscuring the hexagonal units out of which it is composed; and 2) small pores encircling the aperture.

Galeripora dentata - Photo (c) Lane Allen, some rights reserved (CC BY-NC), uploaded by Lane Allen
peptolab's ID: Galeripora dentata, a member of Lobose Amoebae (Subphylum Lobosa)
Added on May 2, 2024
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Photos / Sounds

Observer

crseaquist

Date

March 2, 2024 06:44 AM CST

Description

Gathered dry leaves on 2024-02-23 and stored in water.

Colpoda - Photo (c) Picturepest, some rights reserved (CC BY)
peptolab's ID: Genus Colpoda, a member of Ciliates (Phylum Ciliophora)
Added on March 9, 2024
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Photos / Sounds

Observer

plingfactory

Date

October 10, 2021 09:12 PM CEST

Description

very colourful ciliate due to digestion of cyanobacteria. More on this here:
https://www.plingfactory.de/Science/Atlas/KennkartenProtista/01e-protista/e-Ciliata/e-source/Nassula%20ornata.html

Nassula ornata - Photo (c) Deuterostome, some rights reserved (CC BY-SA)
peptolab's ID: Nassula ornata, a member of Ciliates (Phylum Ciliophora)
Added on February 6, 2024
Supporting

Photos / Sounds

Date

September 23, 2022 08:34 PM MSK

Description

A water sample was taken from a small puddle in the playground. The sample had been in room temperature storage until assayed after 2 days.

Video: https://youtu.be/hnVz2mbtl7M

Tetrahymena - Photo (c) Picturepest, some rights reserved (CC BY)
peptolab's ID: Genus Tetrahymena, a member of Ciliates (Phylum Ciliophora)
Added on January 11, 2024
Supporting

Photos / Sounds

Observer

mnold1

Date

January 6, 2024 03:00 PM EST

Description

Mag. 200x (1,4); 400X (2,3)

  • A pond-side water sample (retentate) was taken on 01/06/2024 using a 10µ dip net to enrich for microorganisms. (The shoreline had a layer of ice about 1/4" thick that needed to be breached in order to accommodate the dipnet. The retentate contained a lot of sediment due to the shallow depth and disturbance caused by the net.) Air temp 35F.

Thuricola, a loricate peritrich ciliate. Lorica has a valve flap that must be pushed open to allow the zooids to feed. The lorica is round-bottomed and stalkless. Images in the video, https://youtu.be/om-CaI8zPlk, suggest there may be a vertical indentation at the aperture of the lorica.

Thuricola - Photo (c) Giuseppe Vago, some rights reserved (CC BY)
peptolab's ID: Genus Thuricola, a member of Ciliates (Phylum Ciliophora)
Added on January 11, 2024
Supporting

Photos / Sounds

Date

July 23, 2023 07:26 PM MSK

Description

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

Sphaerophrya - Photo (c) Илья Монашев, all rights reserved, uploaded by Илья Монашев
peptolab's ID: Genus Sphaerophrya, a member of Suctoria (Subclass Suctoria)
Added on January 5, 2024
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Photos / Sounds

Observer

mhincz

Date

November 2023

Place

Ohio, US (Google, OSM)

Description

Found in freshwater sample (edge of pond), 400x magnification.

Urostomides striatus - Photo (c) peptolab, some rights reserved (CC BY-NC)
peptolab's ID: Urostomides striatus, a member of Ciliates (Phylum Ciliophora)
Added on November 20, 2023
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Photos / Sounds

Observer

dloarie

Date

March 25, 2020 10:46 AM PDT

Description

30 µ long. Apical mouth with liplike oral cavity and long mouth cilia. Long caudal cilium. Found on tree moss.

Phase contrast.

Plagiocampa - Photo (c) peptolab, some rights reserved (CC BY-NC)
peptolab's ID: Genus Plagiocampa, a member of Ciliates (Phylum Ciliophora)
Added on November 18, 2023
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Photos / Sounds

Observer

crseaquist

Date

November 12, 2023 04:49 PM CST

Description

Water sample taken from the edge of a stagnate freshwater playa on 2023-11-06 using a turkey baster.

Trepomonas - Photo (c) zookanthos, some rights reserved (CC BY), uploaded by zookanthos
peptolab's ID: Genus Trepomonas, a member of Metamonads (Phylum Metamonada)
Added on November 14, 2023
Supporting

Photos / Sounds

Observer

dms1535

Date

May 26, 2023 04:28 PM CEST

Description

Haltidytes crassus was a relatively common species at the time of its first description. Since then - probably due to the influence of industrial agriculture - this pretty gastrotrich has become very rare.

The main characteristic of H. crassus are the five dorsal and three ventral “jumping spines”, with which the animal catapults itself out of the danger zone when threatened.

dorsal Dorsal (juvenile animal); ds: dorsal spines (5 pairs).

The long, caudal and hair-shaped last ventral pair of spines, which far overhang the body and cross each other in resting position, is conspicuous. Three ciliary rings on the head are used for swimming locomotion, while the ventral ciliary bands typical of gastrotrichs are used for gliding over the substrate.

ventral

Ventral; cr: 3 ciliary rings for locomotion; js: jump spines; cs: long caudal spines; se: seta on papillae.

The posterior palps - as in all members of the genus Hatidytes - are on distinct papillae.

median

Median; br: “brain”; ph: pharynx; oo: mature ovum; in: “intestine”; mf: muscle fibers that move the jumping spines.

The internal anatomy has some peculiarities. For example, distinct muscle fibers can be seen that couple to the attachment sites of the jumping spines. Adhesive glands and the associated adhesive tubes are not present in this genus.

The typical movement and behavior of the animals can be seen in the following YouTube video:

Youtube-Player

Movie about Haltidytes crassus

Haltidytes crassus - Photo (c) peptolab, some rights reserved (CC BY-NC)
peptolab's ID: Haltidytes crassus, a member of Gastrotrichs (Phylum Gastrotricha)
Added on November 14, 2023
Supporting

Photos / Sounds

Observer

mnold1

Date

September 3, 2023 06:44 PM EDT

Description

Mag. 400x

  • A water sample was taken on 09/03/2023 from pond-edge using a 10µ dip net to enrich for microbes. Air temp. 80°F.

Short-spined Trachelomonas. Perhaps T. hispida as seen here in Fig. 42 https://www.researchgate.net/publication/314542785_Pigmented_Euglenophytes_in_a_natural_and_shallow_lake_in_the_semiarid_region_of_Paraiba_State_Brazil

Trachelomonas hispida crenulatocollis - Photo (c) peptolab, some rights reserved (CC BY-NC)
peptolab's ID: Trachelomonas hispida var. crenulatocollis, a member of Euglenids (Class Euglenida)
Added on November 8, 2023
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Photos / Sounds

Observer

kc2ep

Date

October 2, 2020 01:30 PM EDT
Galeripora dentata - Photo (c) Lane Allen, some rights reserved (CC BY-NC), uploaded by Lane Allen
peptolab's ID: Galeripora dentata, a member of Lobose Amoebae (Subphylum Lobosa)
Added on October 24, 2023
Supporting

Photos / Sounds

Observer

jneigel

Date

November 6, 2020

Description

Unidentified arcellinid Ameba

Galeripora dentata - Photo (c) Lane Allen, some rights reserved (CC BY-NC), uploaded by Lane Allen
peptolab's ID: Galeripora dentata, a member of Lobose Amoebae (Subphylum Lobosa)
Added on October 24, 2023
Supporting

Photos / Sounds

Observer

bdstaylor

Date

August 26, 2023 05:59 PM EDT
Galeripora dentata - Photo (c) Lane Allen, some rights reserved (CC BY-NC), uploaded by Lane Allen
peptolab's ID: Galeripora dentata, a member of Lobose Amoebae (Subphylum Lobosa)
Added on October 24, 2023
Supporting

Photos / Sounds

Observer

shanesmicroscope

Date

April 2021

Description

Continued observation of a sample collected 20210314 from a river tributary, scoop of sediment near the bank.

Cinetochilum margaritaceum - Photo (c) zookanthos, some rights reserved (CC BY), uploaded by zookanthos
peptolab's ID: Cinetochilum margaritaceum, a member of Ciliates (Phylum Ciliophora)
Added on October 19, 2023
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Photos / Sounds

Observer

crseaquist

Date

September 24, 2022 10:29 AM CDT

Description

Water sample (freshwater) was taken on 09/09/2022 using a 10µm dip net to enrich for microorganisms.

Cinetochilum margaritaceum - Photo (c) zookanthos, some rights reserved (CC BY), uploaded by zookanthos
peptolab's ID: Cinetochilum margaritaceum, a member of Ciliates (Phylum Ciliophora)
Added on October 19, 2023
Supporting

Photos / Sounds

Observer

crseaquist

Date

April 13, 2023 03:49 PM CDT

Description

Water sample (freshwater) was taken on 2023-04-09 using a turkey baster.

Cinetochilum margaritaceum - Photo (c) zookanthos, some rights reserved (CC BY), uploaded by zookanthos
peptolab's ID: Cinetochilum margaritaceum, a member of Ciliates (Phylum Ciliophora)
Added on October 19, 2023
Supporting

Photos / Sounds

Date

April 29, 2023 07:12 PM MSK

Description

Here, a population of Cinetochilum margaritaceum is presented and measurements of several of them have been taken.

A water sample was collected from the shore of Srednerogatsky Pond. The air temperature was 14°C (57.2 °F). The sample was kept at room temperature until it was assayed 6 days later.

Video: https://youtu.be/yCe9MKw1KWQ

Cinetochilum margaritaceum - Photo (c) zookanthos, some rights reserved (CC BY), uploaded by zookanthos
peptolab's ID: Cinetochilum margaritaceum, a member of Ciliates (Phylum Ciliophora)
Added on October 19, 2023
Supporting

Photos / Sounds

Observer

zihaowang

Date

September 3, 2023 05:34 PM EDT

Description

800x in sea water.

Peritromus - Photo (c) Vicente Franch Meneu, some rights reserved (CC BY-NC), uploaded by Vicente Franch Meneu
peptolab's ID: Genus Peritromus, a member of Ciliates (Phylum Ciliophora)
Added on September 14, 2023
Improving

Photos / Sounds

Date

July 4, 2023 08:48 AM MSK

Description

A predatory ciliate of the family Colpodidae that feeds on the ciliates Colpoda sp.

A sample was taken from the moss on the tree bark. The sample was stored at room temperature and observed one day after collection.

Video: https://youtu.be/S5B7_vhAbJQ

Bresslaua vorax - Photo (c) peptolab, some rights reserved (CC BY-NC)
peptolab's ID: Bresslaua vorax, a member of Ciliates (Phylum Ciliophora)
Added on September 10, 2023
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Photos / Sounds

Observer

bdstaylor

Date

August 15, 2023 08:59 PM EDT

Description

Likely a Leptopharynx costatus with zoochlorellae.

Like other microthoracids, it is equipped with extrusomes. When exploded, these have four arms at the tip (a character of the family Microthoracidae, per Omar & Foissner, 2012, link below). The last two images show discharged extrusomes.

I looked at two specimens closely (the first is shown in images 1-3, the second in images 4 and 5). Both were a bit over 50 μm in length, and resemble those of L. bromeliophilus (as recorded in Omar & Foissner, 2011, link below).

https://onlinelibrary.wiley.com/doi/full/10.1111/j.1550-7408.2012.00620.x?casa_token=1_WqvnjfmrgAAAAA%3AQT9TfSLAfbU4YKlozTGIadKe0rCyK2voNwTy4xKcfiOiOQWstjnTKy048aTCWwV9MpVZS_2kFZW4kQ

https://bibliotekanauki.pl/articles/763567.pdf

Leptopharynx - Photo (c) Igor Shelpiakov, some rights reserved (CC BY), uploaded by Igor Shelpiakov
peptolab's ID: Genus Leptopharynx, a member of Ciliates (Phylum Ciliophora)
Added on August 19, 2023
Supporting

Photos / Sounds

Observer

phaulactis

Date

September 4, 2022 11:30 AM CEST

Description

Marine

Microscopic

Cryptopharynx setigerus - Photo (c) peptolab, some rights reserved (CC BY-NC)
peptolab's ID: Cryptopharynx setigerus, a member of Ciliates (Phylum Ciliophora)
Added on July 3, 2023
Leading

Photos / Sounds

Date

May 3, 2023 02:22 PM MSK

Description

A water sample was taken from the shore of Srednerogatsky Pond. The air temperature was 14°C (57.2 °F). The sample was stored at room temperature and observed 10 days after collection.

Video: https://youtu.be/7Awc1MaxZm0

Halteria grandinella - Photo (c) peptolab, some rights reserved (CC BY-NC)
peptolab's ID: Halteria grandinella, a member of Ciliates (Phylum Ciliophora)
Added on June 28, 2023
Improving

Photos / Sounds

Observer

bdstaylor

Date

June 19, 2023 06:18 PM EDT

Description

A ciliate with a curious flagellum-like process at its anterior. This structure is not a true flagellum. It does not move independently, but simply dangles from the ciliate's mouth as it swims around. Its purpose is not known. In other respects, Ileonema closely resembles Trachelophyllum. Like members of that genus it is enveloped by a coat of ornate epicortical scales, visible only in the scanning electron microscope. (See Foissner's monograph on Terrestrial and Semiterrestrial Ciliates from Venezuela and Galápagos, pp. 50ff)

Ileonema dispar is the type species of the genus, which was erected in 1884 by Alfred C. Stokes. In 1922, Penard described a similar species under the name I. simplex. I think there reason to believe that I. dispar and I. simplex are the same species, viewed in different conditions. Penard observed only one specimen, although he was able to watch it for a couple of hours. Stokes found I. dispar "in abundance", and describes it as having a variable shape: "Its changes of form are...quite constant as it rests among the algal threads and lengthens the entire body into a club-shaped creature searching for food, or contracts into an egg-shape with a short, narrow neck." However, he only illustrates one specimen (a rather pudgy one!), and it is this illustration that was reproduced in Kahl, with a short description (Kahl does not seem to have found the organism himself). Stokes also observed that his Ileonema is nearly identical in overall appearance to Trachelophyllum apiculatum: a telling comment, since the latter is usually quite slender, like Penard's simplex.

Stokes describes the "flagellum" as follows: "entire flagellum one-half the length of the body, the basal half thick, obliquely grooved and presenting a twisted or cord-like appearance, slightly tapering yet suddenly constricted at the beginning of the finely filamentous distal one-half."

The "flagella" of my critters are generally shaped much as Stokes describes: quite thick at the proximal end, finely filamentous at the distal. Seeing them at low magnification, it's easy to see how he might have misinterpreted the flagellum as being twisted, or ropelike. In my observations, the flagella of some individuals, at certain levels of illumination, appear to be quite uniform from base to tip.

The Ileonema in my population are also extremely contractile, ranging in shape from plumply ovoid to gracefully attenuated and vermiform. After they've eaten, they become almost unrecognizable!

Ileonema dispar - Photo (c) Bruce Taylor, some rights reserved (CC BY), uploaded by Bruce Taylor
peptolab's ID: Ileonema dispar, a member of Ciliates (Phylum Ciliophora)
Added on June 26, 2023
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Photos / Sounds

Observer

bdstaylor

Date

June 23, 2023 09:06 AM EDT

Description

A few more specimens of Ileonema dispar, the type species of the genus, which, as far as I know, has not been recorded since it was discovered by Stokes in 1884. It is differentiated from I. simplex by its flagellar process, which, in the species Stokes describes, is in two distinct parts, thick at the base and finely filamentous at the distal end (Stokes, 1884; Penard, 1922; Kahl, 1930). This is reflected in the name of the species, "dispar" (=unequal). Stokes also describes the species as having two contractile vacuoles in the posterior, an arrangement that would be extremely odd for a trachelophyllid ciliate. In several specimens, I observed some compartmentalization in the posterior vesicle, which could easily be read as two separate vacuoles adjacent to the "anal pore." See image #4.

The flagellar process is retractable, and its appearance is quite variable. The division of this organelle into two distinct parts--which I did not see in every specimen--strikes me as a weak character. As I noted in my previous observation, I think there is some reason to think that I. simplex should be considered a junior synonym of I. dispar (or possibly a variant, or sub-species).

I caught one in fission, and have included two images of the dividers.

I also watched an individual eating a huge clump of debris containing living and dead algae. This observation, and the contents of the cytoplasm in other individuals, lead me to think the critter lives by consuming small round green algae.

Ileonema dispar - Photo (c) Bruce Taylor, some rights reserved (CC BY), uploaded by Bruce Taylor
peptolab's ID: Ileonema dispar, a member of Ciliates (Phylum Ciliophora)
Added on June 26, 2023
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Photos / Sounds

Observer

troy67

Date

June 11, 2023

Description

From an ultra-saline salt flat. Video is here: https://youtu.be/FqojSYv8tVU

Fabrea salina - Photo (c) Troy Alexander, all rights reserved, uploaded by Troy Alexander
peptolab's ID: Fabrea salina, a member of Ciliates (Phylum Ciliophora)
Added on June 17, 2023
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Photos / Sounds

Observer

troy67

Date

June 12, 2023 09:50 AM AST

Description

Darkly pigmented, oddly shaped ciliate common in this pool where mangroves were being propagated. High salinity - saltier than the nearby ocean.

Video uploaded here: https://youtu.be/NzBPgV_8RVk

Fabrea salina - Photo (c) Troy Alexander, all rights reserved, uploaded by Troy Alexander
peptolab's ID: Fabrea salina, a member of Ciliates (Phylum Ciliophora)
Added on June 17, 2023
Supporting

Photos / Sounds

Observer

troy67

Date

June 12, 2023 09:50 AM AST

Description

Darkly pigmented, oddly shaped ciliate common in this pool where mangroves were being propagated. High salinity - saltier than the nearby ocean.

Video uploaded here: https://youtu.be/NzBPgV_8RVk

Fabrea - Photo (c) Troy Alexander, all rights reserved, uploaded by Troy Alexander
peptolab's ID: Genus Fabrea, a member of Ciliates (Phylum Ciliophora)
Added on June 17, 2023
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