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Wyświetlanie 1-12 z 12
Tytuł:
How many kingdoms of life? Eukaryotic phylogeny and philosophy of systematics
Autorzy:
Lamza, Lukasz
Powiązania:
https://bibliotekanauki.pl/articles/690966.pdf
Data publikacji:
2019
Wydawca:
Copernicus Center Press
Tematy:
taxonomy
systematics
philosophy of biology
eukaryotes
Protista
taxonomy;
systematics;
philosophy of biology;
eukaryotes;
protista
Opis:
According to contemporary understanding of the universal tree of life, the traditionally recognized kingdoms of eukaryotic organisms-Protista, Fungi, Animalia and Plantae-are irregularly interspersed in a vast phylogenetic tree. There are numerous groups that in any Linnaean classification advised by phylogenetic relationships (i.e. a Hennigian system) would form sister groups to those kingdoms, therefore requiring us to admit them the same rank. In practice, this would lead to the creation of ca. 25-30 new kingdoms that would now be listed among animals and plants as “major types of life”. This poses problems of an aesthetic and educational nature. There are, broadly speaking, two ways to deal with that issue: a) ignore the aesthetic and educational arguments and propose classification systems that are fully consistent with the Hennigian principles of phylogenetic classification, i.e. are only composed of monophyletic taxa; b) ignore Hennigian principles and bunch small, relatively uncharacteristic groups into paraphyletic taxa, creating systems that are more convenient. In the paper, I present the debate and analyze the pros and cons of both options, briefly commenting on the deeper, third resolution, which would be to abandon classification systems entirely. Recent advances in eukaryotic classification and phylogeny are commented in the light of the philosophical question of the purpose and design principles of biological classification systems.
Źródło:
Zagadnienia Filozoficzne w Nauce; 2019, 66; 203-227
0867-8286
2451-0602
Pojawia się w:
Zagadnienia Filozoficzne w Nauce
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Budowa i ewolucja Trichomonadida
Structure and evolution of Trichomonadida
Autorzy:
Kazubski, S.L.
Powiązania:
https://bibliotekanauki.pl/articles/838229.pdf
Data publikacji:
1990
Wydawca:
Polskie Towarzystwo Parazytologiczne
Tematy:
Protista
Trichomonadida
rzesistek
Trichomonas
budowa
ewolucja
protistologia
Opis:
In the article the survey of data on morphology and ultrastructure of flagellates of the order Trichomonadida is given with special attention paid to Monocercomonadidae and Trichomonadidae. The evolution within these flagellates is considered as a series of changes leading to formation of undulating membrane and reinforcement of the cytoskelet. In both families other two evolutionary tendencies may be also observed: reduction of the flagellar apparatus (in Monocercomonadidae) and enlargement of the number of free flagella (in both families).
Źródło:
Annals of Parasitology; 1990, 36, 5-6
0043-5163
Pojawia się w:
Annals of Parasitology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Budowa i ewolucja Trichomonadida
Structure and evolution of Trichomonadida
Autorzy:
Kazubski, S.L.
Powiązania:
https://bibliotekanauki.pl/articles/2152420.pdf
Data publikacji:
1990
Wydawca:
Polskie Towarzystwo Parazytologiczne
Tematy:
Protista
Trichomonadida
rzesistek
Trichomonas
budowa
ewolucja
protistologia
Opis:
In the article the survey of data on morphology and ultrastructure of flagellates of the order Trichomonadida is given with special attention paid to Monocercomonadidae and Trichomonadidae. The evolution within these flagellates is considered as a series of changes leading to formation of undulating membrane and reinforcement of the cytoskelet. In both families other two evolutionary tendencies may be also observed: reduction of the flagellar apparatus (in Monocercomonadidae) and enlargement of the number of free flagella (in both families).
Źródło:
Wiadomości Parazytologiczne; 1990, 36, 5-6; 175-180
0043-5163
Pojawia się w:
Wiadomości Parazytologiczne
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Microsporidian parasites of aquatic invertebrates in Poland preliminary record
Autorzy:
Ovcharenko, M.
Wita, I.
Powiązania:
https://bibliotekanauki.pl/articles/838495.pdf
Data publikacji:
1998
Wydawca:
Polskie Towarzystwo Parazytologiczne
Tematy:
parasite
invertebrate
Microsporidia
Polska
Protista
aquatic invertebrate
Microspora
Źródło:
Annals of Parasitology; 1998, 44, 3
0043-5163
Pojawia się w:
Annals of Parasitology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Wplyw odkryc Profesora Konstantego Janickiego na dalszy rozwoj protistologii
Autorzy:
Kazubski, S.L.
Powiązania:
https://bibliotekanauki.pl/articles/836490.pdf
Data publikacji:
2005
Wydawca:
Polskie Towarzystwo Parazytologiczne
Tematy:
rozwoj nauki
odkrycia naukowe
pracownicy naukowi
Protista
parazytologia
protistologia
Janicki Konstanty
Źródło:
Annals of Parasitology; 2005, 51, 4; 333-343
0043-5163
Pojawia się w:
Annals of Parasitology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Pełzaki wolno żyjące jako zagrożenie dla zdrowia ludzkiego
Free-living amoebae as threat of human health
Autorzy:
Jascaniene, N.
Leonska-Duniec, A.
Powiązania:
https://bibliotekanauki.pl/articles/789961.pdf
Data publikacji:
2012
Wydawca:
Uniwersytet Szczeciński. Wydawnictwo Naukowe Uniwersytetu Szczecińskiego
Tematy:
ameby
Protista
Acanthamoeba
chorobotworczosc
zagrozenia zdrowia
Źródło:
Zeszyty Naukowe. Prace Instytutu Kultury Fizycznej. Uniwersytet Szczeciński; 2012, 28
1640-6818
Pojawia się w:
Zeszyty Naukowe. Prace Instytutu Kultury Fizycznej. Uniwersytet Szczeciński
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Tetrahymena spp. (Protista, Ciliophora) as Test Species in Rapid Multilevel Ecotoxicity Tests
Autorzy:
Gerhardt, Almut
Ud-Daula, Asad
Schramm, Karl-Werner
Powiązania:
https://bibliotekanauki.pl/articles/763499.pdf
Data publikacji:
2010
Wydawca:
Uniwersytet Jagielloński. Wydawnictwo Uniwersytetu Jagiellońskiego
Tematy:
Biotest, biomarker, biosensor, population growth, toxicity test, risk assessment
Opis:
This review summarizes the application of Tetrahymena spp. in ecotoxicology, in order to promote a more integrated, multi-level ecotoxicological assessment approach regarding the effects of chemical stressors on several biological levels (from molecule to ecosystem). Such a multi-level testing approach in one species facilitates the establishment of missing causal relationships between biochemical responses and ecological effects. The review illustrates that Tetrahymena spp. represent excellent ecotoxicological test species due to their important role in the microbial foodweb, wide distribution and abundance, sequenced genome in T. thermophila, large background knowledge and scientific publications in cellular biology, ecology and ecotoxicology. Several bioassays have already been developed on different biological organisation levels, such as enzyme assays (biochemical level), behavioral tests (individual level), population growth tests (population level) and microcosms (community level). Moreover, specific mode-of-action based assays are available (e.g. genotoxicity), or are in development (e.g. endocrine disruption and neurotoxicity). Tetrahymena spp. combine traits of (1) a single cell, thus might replace or complement specific cell-line testing approaches, with traits of (2) a whole organism and population, thus allowing to study complete metabolic pathways and its consequences on population growth and genetic adaptation. Assays involving Tetrahymena spp. might easily be adapted for a rapid multi-level in situ or ex situ toxicity biosensor test system for ecologically relevant risk assessment.
Źródło:
Acta Protozoologica; 2010, 49, 4
1689-0027
Pojawia się w:
Acta Protozoologica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Free-living Heterotrophic Flagellates from Intertidal Sediments of Saros Bay, Aegean Sea (Turkey)
Autorzy:
Aydin, Esra Elif
Lee, Won Je
Powiązania:
https://bibliotekanauki.pl/articles/763551.pdf
Data publikacji:
2012
Wydawca:
Uniwersytet Jagielloński. Wydawnictwo Uniwersytetu Jagiellońskiego
Tematy:
Protista, heterotrophic flagellates, Saros Bay, Aegean Sea, Turkey, biogeography, endemism
Opis:
This is the first study of free-living heterotrophic flagellates in intertidal sediments of Saros Bay, Aegean Sea (Turkey). In order to contribute to an understanding of the geographic distribution of free-living marine heterotrophic flagellates, we investigated the diversity of heterotrophic flagellates occurring in the bay from 25th June 2010 to 10th October 2010. Thirty eight species from 30 genera of heterotrophic flagellates and one unidentifi ed taxon are reported with uninterpreted records based on light-microscopy. The records consist of one apusomonad, one cercomonad, two choanofl agellates, two cryptomonads, 12 euglenids, one heteroloboseid, one kathablepharid, three kinetoplastids, six stramenopiles, two thaumatomonads and seven of uncertain affinities. All of the morphospecies described here was previously reported elsewhere and appear to be cosmopolitan.
Źródło:
Acta Protozoologica; 2012, 51, 2
1689-0027
Pojawia się w:
Acta Protozoologica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Molecular phylogeny of Spirodinium equi, Triadinium caudatum and Blepharocorys sp. From the equine hindgut
Autorzy:
Snelling, Tim
Pinloche, Eric
Worgan, Hilary J.
Newbold, Jamie
McEwan, Neil R.
Powiązania:
https://bibliotekanauki.pl/articles/763646.pdf
Data publikacji:
2011
Wydawca:
Uniwersytet Jagielloński. Wydawnictwo Uniwersytetu Jagiellońskiego
Tematy:
Gut ciliates, Entodiniomorphida, horse hindgut, Protista, Vestibulifera
Opis:
Single cell morphotypes of the species Triadinium caudatum and Spirodinium equi, together with a representative of the genus Blepharocorys (Blepharocorys sp.) were used for phylogenetic analysis based on their 18S rRNA genes. Spirodinium equi clustered with sequences already described for the entodiniomorphs isolated from horses and the Blepharocorys sp. also grouped within the Entodiniomorphida clade, although both sequences were distinct from those described from rumen ciliates. Triadinium caudatum clustered within the Vestibuliferida, and most closely to that of Paraisotricha, only other member of this order which has been described in the horse. It was concluded that although members of the orders Entodiniomorphida and Vestibuliferida are present in the equine gut, and that they share an ancient linage with their rumen counterparts, they are ancestrally different groups.
Źródło:
Acta Protozoologica; 2011, 50, 4
1689-0027
Pojawia się w:
Acta Protozoologica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Wpływ odkryć Profesora Konstantego Janickiego na dalszy rozwój protistologii
INFLUENCE OF PROFESSOR KONSTANTY JANICKIS DISCOVERIES ON PROGRESS IN PROTISTOLOGY.
Autorzy:
Kazubski, S. L.
Powiązania:
https://bibliotekanauki.pl/articles/2146409.pdf
Data publikacji:
2005
Wydawca:
Polskie Towarzystwo Parazytologiczne
Tematy:
rozwoj nauki
odkrycia naukowe
pracownicy naukowi
Protista
parazytologia
protistologia
Janicki Konstanty
Opis:
Professor Konstanty Janicki published 11 protozoological papers. They concern the flagellate parasites of cockroaches and termites, as well as the amebas parasitising cockroaches and chaetognaths. He described the morphology and cytology of 12 species of flagellates, including 4 new species and genera. Three new species parasitising termites belong to the Parabasalia, one — Oxymonas granulosa, without the Golgi apparatus, initiated a new group of protista, the Oxymonadida Grassć, 1952. Konstanty Janicki also examined some important questions dealing with protozoology such as: (1) Karyomastigont. Janicki analysed the connection of the cell nucleus to the mastigont system in flagellates from termites and cockroaches. Also he described the replication of karyomastigonts of some species. This organelle plays an important part in the discussions on evolution of the lower Protista. (2) Parabasal apparatus. Janicki described the parabasal body in flagellates from cockroaches and termites, paying special attention to its peculiarities. This organelle was later named: ,,Janicki-type parabasal apparatus” and together with pleuromitosis became the main characters of an independent group of protista — Parabasalia. (3) Parasome. Konstanty Janicki also studied the enigmatic body (parasome, Nebenkórper), near the cell nucleus and staining like it, in amebas from the genus Paramoeba. He described this body dividing. After TEM investigation of Janickina (=Paramoeba) pigmentifera, this body is presently recognized as an endosymbiotic flagellate. Summing up, it may be stated that all findings of Professor Konstanty Janicki were the object of further investigations and occupy an important place in protistology.
Źródło:
Wiadomości Parazytologiczne; 2005, 51, 4; 333-343
0043-5163
Pojawia się w:
Wiadomości Parazytologiczne
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Life Cycle, Morphology, Ontogenesis, and Phylogeny of Bromeliothrix metopoides nov. gen., nov. spec., a Peculiar Ciliate (Protista, Colpodea) from Tank Bromeliads (Bromeliaceae)
Autorzy:
Foissner, Wilhelm
Powiązania:
https://bibliotekanauki.pl/articles/763790.pdf
Data publikacji:
2010
Wydawca:
Uniwersytet Jagielloński. Wydawnictwo Uniwersytetu Jagiellońskiego
Tematy:
Central America, division chain, life cycle, macrostome formation, merotelokinetal stomatogenesis, polytomic division, protist endemism, South America
Opis:
Bromeliothrix metopoides was discovered in tank bromeliads from Central and South America. Pure cultures could be established in various media stimulating growth of its food, i.e. bacteria and heterotrophic flagellates of the genus Polytomella. The new ciliate was investigated in the light- and scanning electron microscope, with various silver impregnation techniques, and with molecular methods, using the small-subunit rDNA. The morphology and its changes during the life cycle are documented by 167 figures and a detailed morphometry. Bromeliothrix metopoides is about 27–55 × 22–36 μm in size and has a complex life cycle with Metopus-shaped, bacteriophagous theronts and trophonts (microstomes) and obovate, flagellate-feeding macrostomes having a large, triangular oral apparatus. The thin-walled resting cysts of the theronts and trophonts are uniquely ellipsoidal, while the thick-walled cyst of the macrostome morph is globular. Reproduction occurs in freely motile condition either by binary fission or polytomy, producing a unique, motile “division chain” composed of four globular offspring, of which the central ones are connected by a curious, plug-like holdfast. Division is associated with a complete reorganization of the parental oral and somatic infraciliature. Stomatogenesis is merotelokinetal as in other members of the order Colpodida. The right polykinetid is generated by the rightmost postoral kinety, while the left polykinetid is produced by the two left postoral kineties and five left side kineties. The division in freely motile condition resembles the Exocolpodidae Foissner et al., 2002, to which Bromeliothrix is tentatively assigned, differing from Exocolpoda mainly by the formation of a macrostome morph and a division chain. Bromeliothrix has a ciliary and silverline pattern typical for members of the family Colpodidae. This matches the molecular classification which, however, hardly reflects the outstanding division and life cycle, suggesting some decoupling of morphological and molecular evolution. The specific morphological and ontogenetic traits of Bromeliothrix are interpreted as adaptations to the highly competitive habitat, favouring r-selected life strategies. Bromeliothrix metopoides is widespread in various tank bromeliads and can be easily cultivated in a wide variety of limnetic and terrestrial media. Thus, it remains obscure why this ciliate is restricted to tank bromeliads, i.e. did not occur in about 2,000 soil and freshwater samples investigated globally, including some 100 samples from Central and South America.
Źródło:
Acta Protozoologica; 2010, 49, 3
1689-0027
Pojawia się w:
Acta Protozoologica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Morphology and Phylogeny of Four Marine Scuticociliates (Protista, Ciliophora), with Descriptions of Two New Species: Pleuronema elegans spec. nov. and Uronema orientalis spec. nov.
Autorzy:
Pan, Xuming
Gao, Feng
MIAO, Miao
Al-Rasheid, Khaled A. S.
Ma, Honggang
Fan, Xinpeng
Huang, Jie
Powiązania:
https://bibliotekanauki.pl/articles/763630.pdf
Data publikacji:
2015
Wydawca:
Uniwersytet Jagielloński. Wydawnictwo Uniwersytetu Jagiellońskiego
Tematy:
Scuticociliates, Pleuronema elegans spec. nov., Uronema orientalis spec. nov., phylogeny
Opis:
The morphology and infraciliature of four marine scuticociliates, Pleuronema elegans spec. nov., P. setigerum Calkins, 1902, P. grolierei Wang et al., 2008 and Uronema orientalis spec. nov., collected from China seas, were investigated through live observation and protargol staining methods. Pleuronema elegans spec. nov. can be recognized by the combination of the following characters: size in vivo 90–115 × 45–60 µm, slender oval in outline with a distinctly pointed posterior end; about 10 prolonged caudal cilia; consistently two preoral kineties and 18 or 19 somatic kineties; membranelle 2a double-rowed with its posterior end straight; membranelle 3 three-rowed; one macronucleus; marine habitat. Uronema orientalis spec. nov. is distinguished by the following features: in vivo about 40–55 × 20–30 μm with a truncated apical plate; consistently twenty somatic kineties; membranelle 1 single-rowed and divided into two parts which comprise four and three basal bodies respectively; contractile vacuole pore positioned at the end of the second somatic kinety; marine habitat. We also provide improved diagnoses for P. grolierei Wang et al., 2008 and P. setigerum Calkins, 1902 based on current and previous reports. The small subunit rRNA gene of U. orientalis, P. elegans, P. grolierei and P. puytoraci were sequenced. Phylogenetic analyses indicate that Uronema and Pleuronema are not monophyletic.
Źródło:
Acta Protozoologica; 2015, 54, 1
1689-0027
Pojawia się w:
Acta Protozoologica
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-12 z 12

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