|Tue, 18 July 2004 06:51:55||...It is amazing that the thing most interesting for me is the first picture on your selection of Cothurnia. Really the last two pictures are Cothurnia, but the first is a beautiful example of Pyxicola, a genus similar to Cothurnia, but with a more elegant lorica AND one operculum that seals the coil of this, when the protozoa is retracted...||
|Tue, 06 July 2004 22:33:09||Your unidentified copelate looks like a Fritillaria sp.||
Dr. Michael Owen
|Fri, 30 January 2004 18:55:03||I'm student of Oceanography in Catholic University of Valparaiso and working on siphonophores for my tesis proyect. About your specimen, I would need more information for identification. If is posible send me a specimen or photography of another angle to see the radial canal. P.D.: The species will probably be Dimophyes arctica.||
Daniela Soto Gallardo
|Fri, 30 Januray 2004 18:40:03||The unknown species is: Podon leuckarti, for more information send me email or see reference and Cladocerans in Patagonian Fjords and channel, between the Penas gulf of Strait Magellan. Invest. Mar 31(1). 2003.||
Dr. Paula Rosenberg Berrios
|Tue, 21 October 2003 17:50:03||
I would appreciate if you could help me in the following question. I have cultured aquatic mosses in the laboratory
to carry out some experiments on the influence of UV-B radiation. Mosses were cultured in stream oligotrophic water.
After two months, I observed some microscopic organisms I did not know among the bryophyte shoots. I asked a zoologist
and told me they were tecamoebas. I have some questions yet: - I would want to know the species. I include two photos.
I think one of them is Arcella vulgaris on the basis of your webpage. I have not found the name of the second one
(Tecameba2), although I have seen images
in the web. - I need to know if tecamoebas or any protozoa may lead bryophytes to produce structures like those shown
in the remaining three photos I send (Yema2, Yema4, Yema5.
My response: Still, concerning the sac-like structures I don't have a clue (would tend towards the germination structures of the mosses) but about the two animals there is notice: the Arcella is for sure an Arcella but be cautious with the species. It could be at least two species: A.vulgaris or A.discoides. Usually, for relatively secure determination it is necessary to see them at least from the side and from upper/lower. The other species is with high probability one of the genus Centropyxis and there perhaps C.aculeata. Do you have size informations, i.e. do you know the exact length and width of the animal? Please note, that testaceans (or thecamoeba) are known specialists of the mossy flora.
Dr. Javier Martinez-Abaigar
|Sat, 26 Oct 2002 02:57:45||
haben Sie nette Bilder eines Tardigraden. Anhand der Photos ist eine Bestimmung zur Art nicht sicher möglich. Die
Gattung Macrobiotus kann ich mit Sicherheit ausschließen - soweit lassen sich Krallen und Pharynx erkennen. Mit
Sicherheit gehört die Art zur Familie der Hypsibiidae, vermutlich handelt es sich zumindest bei einigen Bildern um
Pseudobiotus megalonyx (dafür sprechen die Krallen, die Augen und die Einlagerungen im Pharynx. Eine kleine
Beschreibung finden Sie auf
On http://www.cladocera.de/freaks/tardigrada.html you have nice images of a tardigrade. A secure species' identification by means of the photos is not possible. Without doubts, though, I can exclude the genus Macrobiotus - you can see this by means of the claws and the pharynx. Surely, the species belongs to the family of the Hypsibiidae, probably in some of the images you show Pseudobiotus megalonyx (claws, eyes and incrustations at the pharynx speak in favour of this). Please find a little description on http://www.tardigrades.de/pseudobiotusmegalonyx.htm.
|Tue, 29 May 2001 19:39:41||Your photos are from Alona affinis (250-600 microns).The other photos are the typical first antenna, labrum, and the postabdomen of A.affinis. Check the head pores, are two. Dr. Smirnov designed this species of Alona as Biapertura, but at this time is not a valid name. Please, read his book: FAUNA OF THE U.S.S.R. Crustacea Vol No.2. Chydoridae. Academy of Sciences of the U.S.S.R. 1974. 644 pp. You will find all the characters of Biapertura affinis or Alona affinis. Best wishes. Sincerely: Marcelo||
Dr. Marcelo Silva Briano
This page last updated Oct 7th, 2004.