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Oxyrrhis Parasitica
''Oxyrrhis'' is a genus of dinoflagellates. It includes the species ''Oxyrrhis marina''. It is sometimes considered to be a monotypic genus.Lowe, C. D., et al. (2011)Who is ''Oxyrrhis marina''? Morphological and phylogenetic studies on an unusual dinoflagellate.''Journal of Plankton Research'' 33(4) 555-67. Some sources assign the species ''Oxyrrhis parasitica'' and ''Oxyrrhis phaeocysticola, O. phaeocysticola'', as well.Guiry, M. D. in Guiry, M. D. & G. M. Guiry. 2013''Oxyrrhis''.AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. Accessed on 10 June 2013. Classification Class Oxyrrhea Cavalier-Smith 1987 [Oxyrrhidophyceae; Oxyrrhia Cavalier-Smith & Chao 2004] * Order Oxyrrhinida Cavalier-Smith 1993 [Oxyrrhinales Sournia 1984] ** Family Oxyrrhinidae [Oxyrrhinaceae Sournia 1984] *** Genus ''Oxyrrhis'' Dujardin 1841 **** Species ''O. marina'' Dujardin 1841 [''Oxyrrhis maritima'' van Meel 1969; ''Oxyrrhis tenticulifera'' Conrad 1939; ''Glyphidium ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Oxyrrhis Marina
''Oxyrrhis marina'' is a species of dinoflagellates with flagella. A marine heterotroph, it is found in much of the world. Description This protozoan species has an asymmetrical oval shape to its single-celled body.Lowe, C. D., et al. (2011)Who is ''Oxyrrhis marina''? Morphological and phylogenetic studies on an unusual dinoflagellate.''Journal of Plankton Research'' 33(4) 555-67. It has been likened to a rugby ball.Lowe, C. D., et al. (2011)Collection, isolation and culturing strategies for ''Oxyrrhis marina''.''Journal of Plankton Research'' 33(4) 569-78. The cell usually measures between 20 and 30 micrometers, but it is known to reach 60. It has two flagella with a protruding, tentacle-like bulge between them. The flagella are covered in scales. Most individuals have scales on the body surface, as well. The two flagella have separate functions. One undulates in waves and the other is coiled, producing a corkscrew-like propulsion to move the cell. The individual appears color ... [...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"). Euka ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
SAR Supergroup
The SAR supergroup, also just SAR or Harosa, is a clade that includes stramenopiles (heterokonts), alveolates, and Rhizaria. The name is an acronym derived from the first letters of each of these clades; it has been alternatively spelled "RAS". The term "Harosa" (at the subkingdom level) has also been used. The SAR supergroup is a node-based taxon. Note that as a formal taxon, "Sar" has only its first letter capitalized, while the earlier abbreviation, SAR, retains all uppercase letters. Both names refer to the same group of organisms, unless further taxonomic revisions deem otherwise. Members of the SAR supergroup were once included under the separate supergroups Chromalveolata (Chromista and Alveolata) and Rhizaria, until phylogenetic studies confirmed that stramenopiles and alveolates diverged with Rhizaria. This apparently excluded haptophytes and cryptomonads, leading Okamoto ''et al.'' (2009) to propose the clade Hacrobia to accommodate them. Phylogeny Based on a compi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dinoflagellate
The dinoflagellates (Greek δῖνος ''dinos'' "whirling" and Latin ''flagellum'' "whip, scourge") are a monophyletic group of single-celled eukaryotes constituting the phylum Dinoflagellata and are usually considered algae. Dinoflagellates are mostly marine plankton, but they also are common in freshwater habitats. Their populations vary with sea surface temperature, salinity, and depth. Many dinoflagellates are photosynthetic, but a large fraction of these are in fact mixotrophic, combining photosynthesis with ingestion of prey (phagotrophy and myzocytosis). In terms of number of species, dinoflagellates are one of the largest groups of marine eukaryotes, although substantially smaller than diatoms. Some species are endosymbionts of marine animals and play an important part in the biology of coral reefs. Other dinoflagellates are unpigmented predators on other protozoa, and a few forms are parasitic (for example, ''Oodinium'' and ''Pfiesteria''). Some dinoflagellates pro ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Oxyrrhinales
''Oxyrrhis'' is a genus of dinoflagellates. It includes the species '' Oxyrrhis marina''. It is sometimes considered to be a monotypic genus.Lowe, C. D., et al. (2011)Who is ''Oxyrrhis marina''? Morphological and phylogenetic studies on an unusual dinoflagellate.''Journal of Plankton Research'' 33(4) 555-67. Some sources assign the species '' Oxyrrhis parasitica'' and '' O. phaeocysticola'', as well.Guiry, M. D. in Guiry, M. D. & G. M. Guiry. 2013''Oxyrrhis''.AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. Accessed on 10 June 2013. Classification Class Oxyrrhea ''Oxyrrhis'' is a genus of dinoflagellates. It includes the species '' Oxyrrhis marina''. It is sometimes considered to be a monotypic genus In biology, a monotypic taxon is a taxonomic group (taxon) that contains only one immediately subord ... Cavalier-Smith 1987 xyrrhidophyceae; Oxyrrhia Cavalier-Smith & Chao 2004* Order Oxyrrhinida Cavalier-Smith 1993 xyrrhinales Sourn ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Oxyrrhinaceae
''Oxyrrhis'' is a genus of dinoflagellates. It includes the species '' Oxyrrhis marina''. It is sometimes considered to be a monotypic genus.Lowe, C. D., et al. (2011)Who is ''Oxyrrhis marina''? Morphological and phylogenetic studies on an unusual dinoflagellate.''Journal of Plankton Research'' 33(4) 555-67. Some sources assign the species '' Oxyrrhis parasitica'' and '' O. phaeocysticola'', as well.Guiry, M. D. in Guiry, M. D. & G. M. Guiry. 2013''Oxyrrhis''.AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. Accessed on 10 June 2013. Classification Class Oxyrrhea ''Oxyrrhis'' is a genus of dinoflagellates. It includes the species '' Oxyrrhis marina''. It is sometimes considered to be a monotypic genus In biology, a monotypic taxon is a taxonomic group (taxon) that contains only one immediately subord ... Cavalier-Smith 1987 xyrrhidophyceae; Oxyrrhia Cavalier-Smith & Chao 2004* Order Oxyrrhinida Cavalier-Smith 1993 xyrrhinales Sourn ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Monotypic Genus
In biology, a monotypic taxon is a taxonomic group (taxon) that contains only one immediately subordinate taxon. A monotypic species is one that does not include subspecies or smaller, infraspecific taxa. In the case of genera, the term "unispecific" or "monospecific" is sometimes preferred. In botanical nomenclature, a monotypic genus is a genus in the special case where a genus and a single species are simultaneously described. In contrast, an oligotypic taxon contains more than one but only a very few subordinate taxa. Examples Just as the term ''monotypic'' is used to describe a taxon including only one subdivision, the contained taxon can also be referred to as monotypic within the higher-level taxon, e.g. a genus monotypic within a family. Some examples of monotypic groups are: Plants * In the order Amborellales, there is only one family, Amborellaceae and there is only one genus, '' Amborella'', and in this genus there is only one species, namely ''Amborella trichopoda.' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Oxyrrhis Parasitica
''Oxyrrhis'' is a genus of dinoflagellates. It includes the species ''Oxyrrhis marina''. It is sometimes considered to be a monotypic genus.Lowe, C. D., et al. (2011)Who is ''Oxyrrhis marina''? Morphological and phylogenetic studies on an unusual dinoflagellate.''Journal of Plankton Research'' 33(4) 555-67. Some sources assign the species ''Oxyrrhis parasitica'' and ''Oxyrrhis phaeocysticola, O. phaeocysticola'', as well.Guiry, M. D. in Guiry, M. D. & G. M. Guiry. 2013''Oxyrrhis''.AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. Accessed on 10 June 2013. Classification Class Oxyrrhea Cavalier-Smith 1987 [Oxyrrhidophyceae; Oxyrrhia Cavalier-Smith & Chao 2004] * Order Oxyrrhinida Cavalier-Smith 1993 [Oxyrrhinales Sournia 1984] ** Family Oxyrrhinidae [Oxyrrhinaceae Sournia 1984] *** Genus ''Oxyrrhis'' Dujardin 1841 **** Species ''O. marina'' Dujardin 1841 [''Oxyrrhis maritima'' van Meel 1969; ''Oxyrrhis tenticulifera'' Conrad 1939; ''Glyphidium ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Oxyrrhis Phaeocysticola
''Oxyrrhis'' is a genus of dinoflagellates. It includes the species ''Oxyrrhis marina''. It is sometimes considered to be a monotypic genus.Lowe, C. D., et al. (2011)Who is ''Oxyrrhis marina''? Morphological and phylogenetic studies on an unusual dinoflagellate.''Journal of Plankton Research'' 33(4) 555-67. Some sources assign the species ''Oxyrrhis parasitica'' and '' O. phaeocysticola'', as well.Guiry, M. D. in Guiry, M. D. & G. M. Guiry. 2013''Oxyrrhis''.AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. Accessed on 10 June 2013. Classification Class Oxyrrhea ''Oxyrrhis'' is a genus of dinoflagellates. It includes the species '' Oxyrrhis marina''. It is sometimes considered to be a monotypic genus In biology, a monotypic taxon is a taxonomic group (taxon) that contains only one immediately subord ... Cavalier-Smith 1987 xyrrhidophyceae; Oxyrrhia Cavalier-Smith & Chao 2004* Order Oxyrrhinida Cavalier-Smith 1993 xyrrhinales Sournia ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Oxyrrhea
''Oxyrrhis'' is a genus of dinoflagellates. It includes the species ''Oxyrrhis marina''. It is sometimes considered to be a monotypic genus.Lowe, C. D., et al. (2011)Who is ''Oxyrrhis marina''? Morphological and phylogenetic studies on an unusual dinoflagellate.''Journal of Plankton Research'' 33(4) 555-67. Some sources assign the species ''Oxyrrhis parasitica'' and '' O. phaeocysticola'', as well.Guiry, M. D. in Guiry, M. D. & G. M. Guiry. 2013''Oxyrrhis''.AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. Accessed on 10 June 2013. Classification Class Oxyrrhea ''Oxyrrhis'' is a genus of dinoflagellates. It includes the species '' Oxyrrhis marina''. It is sometimes considered to be a monotypic genus In biology, a monotypic taxon is a taxonomic group (taxon) that contains only one immediately subord ... Cavalier-Smith 1987 xyrrhidophyceae; Oxyrrhia Cavalier-Smith & Chao 2004* Order Oxyrrhinida Cavalier-Smith 1993 xyrrhinales Sournia ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
