Autor: HAUSMANN, Klaus - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Thecamoeba aesculea n. sp. (Amoebozoa, Thecamoebidae), a Terrestrial Amoeba with Affinities to Th. sphaeronucleolus (Greeff, 1891)
Autorzy:: KUDRYAVTSEV, Alexander
HAUSMANN, Klaus
Powiązania:: https://bibliotekanauki.pl/articles/763696.pdf
Data publikacji:: 2009
Wydawca:: Uniwersytet Jagielloński. Wydawnictwo Uniwersytetu Jagiellońskiego
Tematy:: Amoebae, morphology, morphospecies, taxonomy, Thecamoeba, ultras
Opis:: Thecamoeba aesculea n. sp. was isolated and described from the surface of the bark of Aesculus hippocastanum and from terrestrial mosses growing on it. This amoeba is superficially similar to Thecamoeba sphaeronucleolus, but comparison of the newly isolated strain with the photographs and video records of the type strain of this species reveals differences which show that the two strains do not belong to the same morphospecies. The data obtained indicate the necessity of further comparative studies on the diversity of thecamoebian ‘morphospecies’ to outline clearer borders between them.
Źródło:: Acta Protozoologica; 2009, 48, 2
1689-0027
Pojawia się w:: Acta Protozoologica
Dostawca treści:: Biblioteka Nauki

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Tytuł:: Description of Paramoeba atlantica n. sp. (Amoebozoa, Dactylopodida) – a Marine Amoeba from the Eastern Atlantic, with Emendation of the Dactylopodid Families
Autorzy:: Kudryavtsev, Alexander
Pawlowski, Jan
Hausmann, Klaus
Powiązania:: https://bibliotekanauki.pl/articles/763698.pdf
Data publikacji:: 2011
Wydawca:: Uniwersytet Jagielloński. Wydawnictwo Uniwersytetu Jagiellońskiego
Tematy:: Amoebozoa, Dactylopodida, deep-sea protists, Paramoeba atlantica n. sp., phylogeny, SSU rDNA, taxonomy, ultrastructure
Opis:: A strain of marine amoeba has been isolated and studied from the bottom sediments of the Great Meteor Seamount (Atlantic Ocean, 29°36.29′N; 28°59.12′W; 267.4 m deep). This amoeba has a typical dactylopodiid morphotype, a coat of delicate, boat-shaped scales, and a Perkinsela-like organism (PLO), an obligatory, deeply-specialized kinetoplastid symbiont near the nucleus. These characters allow us to include this species into the genus Paramoeba. However, it differs from its only described species, P. eilhardi, in the structure of scales. P. atlantica n. sp. is established therefore to accommodate the studied strain. SSU rRNA gene sequence analysis suggests that P. atlantica belongs to the Dactylopodida, and is sister to a monophyletic clade of P. eilhardi and all Neoparamoeba spp., branching separately from P. eilhardi. Therefore, the genera Paramoeba and Neoparamoeba, currently defined based on the cell surface ultrastructure, might be paraphyletic and probably should be synonymized, as further evidence is accumulated. Based on the data available we emend the families Vexilliferidae and Paramoebidae to make them more consistent with the current phylogenetic schemes.
Źródło:: Acta Protozoologica; 2011, 50, 3
1689-0027
Pojawia się w:: Acta Protozoologica
Dostawca treści:: Biblioteka Nauki

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Tytuł:: On the Enigmatic Hook of the Metaradiophryids (Alveolata, Ciliophora)
Autorzy:: Hausmann, Klaus
Günther, Gerd
Lehmann, Diana
Radek, Renate
Powiązania:: https://bibliotekanauki.pl/articles/763507.pdf
Data publikacji:: 2016
Wydawca:: Uniwersytet Jagielloński. Wydawnictwo Uniwersytetu Jagiellońskiego
Tematy:: Astomatous ciliates, Metaradiophrya spec., hook structure, holdfast organelle
Opis:: The astomatous metaradiophryids are ciliates which live endosymbiotically in earthworms (Annelida, Lumbricidae). Their prominent hook apparatus is demonstrated in detail in light micrographs of living organisms as well as in scanning electron micrographs of Parducz-fixed cells. Since it was first observed, this structure has been interpreted as a ‘holdfast’ organelle preventing ciliates from being expelled prematurely from the intestine of the worm along with its excrements. No active movement of the hook has been reported in earlier papers or in our recent studies. Nevertheless, a detailed description of different parts of the hook apparatus exists in older literature, including a hypothesis on how these elements interact with each other to function as a holdfast device – without any experimental evidence. The suspected mode of function of this structure is questioned and critically discussed.
Źródło:: Acta Protozoologica; 2016, 55, 1
1689-0027
Pojawia się w:: Acta Protozoologica
Dostawca treści:: Biblioteka Nauki

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