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觀察者

mc_agricola

日期

6月 5, 2024 18:42 MSK

描述

Periphyton from an intermediate swamp; pH = 6.5.

Chaetonotus - Photo (c) Proyecto Agua,保留部份權利CC BY-NC-SA
peptolab 的鑑定 Chaetonotus, 腹毛動物門 ( Gastrotricha) 之一員
在 2024年6月11日 加入
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日期

11月 6, 2023 09:34 MSK

描述

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 由 Igor Shelpiakov 所上傳的 (c) Igor Shelpiakov,保留部份權利CC BY
peptolab 的鑑定 Colpoda steinii, 原藻界 ( Chromista) 之一員
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觀察者

bdstaylor

日期

9月 6, 2023 07:01 EDT

描述

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 由 Lane Allen 所上傳的 (c) Lane Allen,保留部份權利CC BY-NC
peptolab 的鑑定 Galeripora dentata, 原生生物界 ( Protozoa) 之一員
在 2024年5月2日 加入
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什麼

Colpoda

觀察者

crseaquist

日期

3月 2, 2024 06:44 CST

描述

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

Colpoda - Photo (c) Picturepest,保留部份權利CC BY
peptolab 的鑑定 Colpoda, 原藻界 ( Chromista) 之一員
在 2024年3月9日 加入
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觀察者

plingfactory

日期

10月 10, 2021 21:12 CEST

描述

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,保留部份權利CC BY-SA
peptolab 的鑑定 Nassula ornata, 原藻界 ( Chromista) 之一員
在 2024年2月6日 加入
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日期

9月 23, 2022 20:34 MSK

描述

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,保留部份權利CC BY
peptolab 的鑑定 Tetrahymena, 原藻界 ( Chromista) 之一員
在 2024年1月11日 加入
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什麼

Thuricola

觀察者

mnold1

日期

1月 6, 2024 15:00 EST

描述

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,保留部份權利CC BY
peptolab 的鑑定 Thuricola, 原藻界 ( Chromista) 之一員
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日期

7月 23, 2023 19:26 MSK

描述

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 由 Илья Монашев 所上傳的 (c) Илья Монашев,保留所有權利
peptolab 的鑑定 Sphaerophrya, 原藻界 ( Chromista) 之一員
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觀察者

mhincz

日期

11月 2023

地點

Ohio, US (Google, OSM)

描述

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

Urostomides striatus - Photo (c) peptolab,保留部份權利CC BY-NC
peptolab 的鑑定 Urostomides striatus, 原藻界 ( Chromista) 之一員
在 2023年11月20日 加入
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觀察者

dloarie

日期

3月 25, 2020 10:46 PDT

描述

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,保留部份權利CC BY-NC
peptolab 的鑑定 Plagiocampa, 原藻界 ( Chromista) 之一員
在 2023年11月18日 加入
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觀察者

crseaquist

日期

11月 12, 2023 16:49 CST

地點

Durpree Park (Google, OSM)

描述

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

Trepomonas - Photo 由 zookanthos 所上傳的 (c) zookanthos,保留部份權利CC BY
peptolab 的鑑定 Trepomonas, 原生生物界 ( Protozoa) 之一員
在 2023年11月14日 加入
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觀察者

dms1535

日期

5月 26, 2023 16:28 CEST

描述

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,保留部份權利CC BY-NC
peptolab 的鑑定 Haltidytes crassus, 腹毛動物門 ( Gastrotricha) 之一員
在 2023年11月14日 加入
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觀察者

mnold1

日期

9月 3, 2023 18:44 EDT

描述

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,保留部份權利CC BY-NC
peptolab 的鑑定 Trachelomonas hispida var. crenulatocollis, 原生生物界 ( Protozoa) 之一員
在 2023年11月8日 加入
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觀察者

kc2ep

日期

10月 2, 2020 13:30 EDT
Galeripora dentata - Photo 由 Lane Allen 所上傳的 (c) Lane Allen,保留部份權利CC BY-NC
peptolab 的鑑定 Galeripora dentata, 原生生物界 ( Protozoa) 之一員
在 2023年10月24日 加入
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觀察者

jneigel

日期

11月 6, 2020

描述

Unidentified arcellinid Ameba

Galeripora dentata - Photo 由 Lane Allen 所上傳的 (c) Lane Allen,保留部份權利CC BY-NC
peptolab 的鑑定 Galeripora dentata, 原生生物界 ( Protozoa) 之一員
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觀察者

bdstaylor

日期

8月 26, 2023 17:59 EDT
Galeripora dentata - Photo 由 Lane Allen 所上傳的 (c) Lane Allen,保留部份權利CC BY-NC
peptolab 的鑑定 Galeripora dentata, 原生生物界 ( Protozoa) 之一員
在 2023年10月24日 加入
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觀察者

shanesmicroscope

日期

4月 2021

描述

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

Cinetochilum margaritaceum - Photo 由 zookanthos 所上傳的 (c) zookanthos,保留部份權利CC BY
peptolab 的鑑定 Cinetochilum margaritaceum, 原藻界 ( Chromista) 之一員
在 2023年10月19日 加入
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觀察者

crseaquist

日期

9月 24, 2022 10:29 CDT

描述

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

Cinetochilum margaritaceum - Photo 由 zookanthos 所上傳的 (c) zookanthos,保留部份權利CC BY
peptolab 的鑑定 Cinetochilum margaritaceum, 原藻界 ( Chromista) 之一員
在 2023年10月19日 加入
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觀察者

crseaquist

日期

4月 13, 2023 15:49 CDT

描述

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

Cinetochilum margaritaceum - Photo 由 zookanthos 所上傳的 (c) zookanthos,保留部份權利CC BY
peptolab 的鑑定 Cinetochilum margaritaceum, 原藻界 ( Chromista) 之一員
在 2023年10月19日 加入
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日期

4月 29, 2023 19:12 MSK

描述

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 由 zookanthos 所上傳的 (c) zookanthos,保留部份權利CC BY
peptolab 的鑑定 Cinetochilum margaritaceum, 原藻界 ( Chromista) 之一員
在 2023年10月19日 加入
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觀察者

zihaowang

日期

9月 3, 2023 17:34 EDT

描述

800x in sea water.

Peritromus - Photo 由 Vicente Franch Meneu 所上傳的 (c) Vicente Franch Meneu,保留部份權利CC BY-NC
peptolab 的鑑定 Peritromus, 原藻界 ( Chromista) 之一員
在 2023年9月14日 加入
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日期

7月 4, 2023 08:48 MSK

描述

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,保留部份權利CC BY-NC
peptolab 的鑑定 Bresslaua vorax, 原藻界 ( Chromista) 之一員
在 2023年9月10日 加入
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觀察者

bdstaylor

日期

8月 15, 2023 20:59 EDT

描述

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

標籤

Leptopharynx - Photo 由 Igor Shelpiakov 所上傳的 (c) Igor Shelpiakov,保留部份權利CC BY
peptolab 的鑑定 Leptopharynx, 原藻界 ( Chromista) 之一員
在 2023年8月19日 加入
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觀察者

phaulactis

日期

9月 4, 2022 11:30 CEST

描述

Marine

Microscopic

Cryptopharynx setigerus - Photo (c) peptolab,保留部份權利CC BY-NC
peptolab 的鑑定 Cryptopharynx setigerus, 原藻界 ( Chromista) 之一員
在 2023年7月3日 加入
優先

照片/聲音

日期

5月 3, 2023 14:22 MSK

描述

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,保留部份權利CC BY-NC
peptolab 的鑑定 Halteria grandinella, 原藻界 ( Chromista) 之一員
在 2023年6月28日 加入
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觀察者

bdstaylor

日期

6月 19, 2023 18:18 EDT

描述

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 由 Bruce Taylor 所上傳的 (c) Bruce Taylor,保留部份權利CC BY
peptolab 的鑑定 Ileonema dispar, 原藻界 ( Chromista) 之一員
在 2023年6月26日 加入
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觀察者

bdstaylor

日期

6月 23, 2023 09:06 EDT

描述

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 由 Bruce Taylor 所上傳的 (c) Bruce Taylor,保留部份權利CC BY
peptolab 的鑑定 Ileonema dispar, 原藻界 ( Chromista) 之一員
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什麼

Fabrea salina

觀察者

troy67

日期

6月 11, 2023

描述

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

Fabrea salina - Photo 由 Troy Alexander 所上傳的 (c) Troy Alexander,保留所有權利
peptolab 的鑑定 Fabrea salina, 原藻界 ( Chromista) 之一員
在 2023年6月17日 加入
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什麼

Fabrea salina

觀察者

troy67

日期

6月 12, 2023 09:50 AST

描述

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 由 Troy Alexander 所上傳的 (c) Troy Alexander,保留所有權利
peptolab 的鑑定 Fabrea salina, 原藻界 ( Chromista) 之一員
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什麼

Fabrea salina

觀察者

troy67

日期

6月 12, 2023 09:50 AST

描述

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 由 Troy Alexander 所上傳的 (c) Troy Alexander,保留所有權利
peptolab 的鑑定 Fabrea, 原藻界 ( Chromista) 之一員
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統計

  • 63