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Heteromitidae
Cercomonads are small flagellates, widespread in aqueous habitats and common in soils. Characteristics The cells are generally around 10 μm in length, without any shell or covering. They produce filose pseudopods to capture bacteria, but do not use them for locomotion, which usually takes place by gliding along surfaces. Most members have two flagella, one directed forward and one trailing under the cell, inserted at right angles near its anterior. The nucleus is connected to the flagellar bases and accompanied by a characteristic paranuclear body. Classification Genetic studies place the cercomonads among the Cercozoa, a diverse group of amoeboid and flagellate protozoans. They are divided into two families. * The Heteromitidae tend to be relatively rigid, and produce only temporary pseudopods. * The Cercomonadidae are more plastic, and when food supplies are plentiful may become amoeboid and even multinucleate. The classification of genera and species continues ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Eukaryote
Eukaryotes () are organisms whose cells have a nucleus. All animals, plants, fungi, and many unicellular organisms, are Eukaryotes. They belong to the group of organisms Eukaryota or Eukarya, which is one of the three domains of life. Bacteria and Archaea (both prokaryotes) make up the other two domains. The eukaryotes are usually now regarded as having emerged in the Archaea or as a sister of the Asgard archaea. This implies that there are only two domains of life, Bacteria and Archaea, with eukaryotes incorporated among archaea. Eukaryotes represent a small minority of the number of organisms, but, due to their generally much larger size, their collective global biomass is estimated to be about equal to that of prokaryotes. Eukaryotes emerged approximately 2.3–1.8 billion years ago, during the Proterozoic eon, likely as flagellated phagotrophs. Their name comes from the Greek εὖ (''eu'', "well" or "good") and κάρυον (''karyon'', "nut" or "kernel"). E ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Helkesimastix
Cercomonads are small flagellates, widespread in aqueous habitats and common in soils. Characteristics The cells are generally around 10 μm in length, without any shell or covering. They produce filose pseudopods to capture bacteria, but do not use them for locomotion, which usually takes place by gliding along surfaces. Most members have two flagella, one directed forward and one trailing under the cell, inserted at right angles near its anterior. The nucleus is connected to the flagellar bases and accompanied by a characteristic paranuclear body. Classification Genetic studies place the cercomonads among the Cercozoa, a diverse group of amoeboid and flagellate protozoans. They are divided into two families. * The Heteromitidae tend to be relatively rigid, and produce only temporary pseudopods. * The Cercomonadidae are more plastic, and when food supplies are plentiful may become amoeboid and even multinucleate. The classification of genera and species continues to ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cercomonas
Cercomonads are small flagellates, widespread in aqueous habitats and common in soils. Characteristics The cells are generally around 10 μm in length, without any shell or covering. They produce filose pseudopods to capture bacteria, but do not use them for locomotion, which usually takes place by gliding along surfaces. Most members have two flagella, one directed forward and one trailing under the cell, inserted at right angles near its anterior. The nucleus is connected to the flagellar bases and accompanied by a characteristic paranuclear body. Classification Genetic studies place the cercomonads among the Cercozoa, a diverse group of amoeboid and flagellate protozoans. They are divided into two families. * The Heteromitidae tend to be relatively rigid, and produce only temporary pseudopods. * The Cercomonadidae are more plastic, and when food supplies are plentiful may become amoeboid and even multinucleate. The classification of genera and species continues to un ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Eocercomonas
''Eocercomonas'' is a genus of cercozoa Cercozoa is a phylum of diverse single-celled eukaryotes. They lack shared morphological characteristics at the microscopic level, and are instead defined by molecular phylogenies of rRNA and actin or polyubiquitin. They were the first major euk .... It is includes the species '' Eocercomonas ramosa''. References Sarcomonadea Cercozoa genera Monotypic SAR supergroup genera {{Cercozoa-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Paracercomonas
''Paracercomonas'' is a genus of rhizaria. It includes the species ''Paracercomonas marina''. Species * '' P. ambulans'' Howe & Cavalier-Smith 2009 * '' P. astra'' Howe & Cavalier-Smith 2009 * '' P. baikali'' Howe et al. 2011 * '' P. bassi'' Brabender et al. 2012 * '' P. compacta'' Bass & Cavalier-Smith 2009 * '' P. crassicauda'' (Dujardin 1841) Bass & Cavalier-Smith 2009 * '' P. ekelundi'' Cavalier-Smith & Bass 2006 * '' P. elongata'' Howe & Cavalier-Smith 2009 * '' P. filosa'' Bass & Cavalier-Smith 2009 * '' P. kruegeri'' Brabender et al. 2012 * '' P. marina'' Cavalier-Smith & Bass 2006 * '' P. metabolica'' (Mylnikov 1992) Cavalier-Smith & Bass 2006 * '' P. minima'' (Mylnikov 1985) Bass & Cavalier-Smith 2009 * '' P. oxoniensis'' Howe & Cavalier-Smith 2009 * '' P. paralaciniaegerens'' Bass & Cavalier-Smith 2009 * '' P. pleomorpha'' Bass & Cavalier-Smith 2009 * '' P. proboscata'' Brabender et al. 2012 * '' P. producta'' Howe & Cavalier-Smith 2009 * '' P. saepenatans'' Vickerman ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kraken (Cercozoa)
''Kraken'' is a genus of amoebae within the Cercozoa, containing the sole species ''Kraken carinae''. These amoebae are characterized by a small round cell body and a network of thin and very long filopodia that can reach up to a mm in diameter. Kraken amoebae feed on bacteria and live in freshwater and soil systems. Etymology ''Kraken'' was named after the German word Krakonen, which is the name used to refer to the Norse mythological monster. ''Kraken'' was named as such due to the method of feeding, in which the large network of branching filopodia grab bacteria and transports it to the cell body. The mythological monster Kraken was told to catch its prey with one of its many arms in a similar manner. History ''Kraken'' is a recently discovered genus, having first been described in 2016 at the University of Koln. Thomas Cavalier-Smith established the phylum Cercozoa in 1998, which consists of flagellates and filose amoebae that are widely morphologically diverse. Genetic ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
