Reticulamoeba

	Reticulamoeba ''Reticulamoeba'' is a genus of Rhizaria. It is a relatively large unicellular protist and is commonly known for its thin reticulopodia radiating outwards from the cell (Bass et al., 2012). ''Reticulamoeba'' are strictly benthic protists that use their reticulopodia for feeding. They have a close association with benthic diatoms as their main source of food (Bass et al., 2012). There are only two ''Reticulamoeba'' species described to date and the protozoologist Karl Grell discovered both of them (Bass et al., 2012). History The genus ''Reticulamoeba'' was described in 1994 by the protozoologist Karl Grell based on the species R. gemmipara and not until a year later a second species R. minor was discovered (Bass et al., 2012). The two species form a clade within the cercozoan class Granofilosea (Bass et al., 2012). Within this clade, ''Reticulamoeba'' present phylogenetic similarities with the genus Mesofila (Bass et al., 2012). Habitat and ecology ''Reticulamoeba'' is comm ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
	Leucodictyida Granofilosea is a class of cercozoans in the subphylum Filosa. Three groups that were traditionally considered heliozoans belong here: the Heliomonadida, Desmothoracida and Gymnosphaerida, which were recently grouped into the new class of Granofilosea. Taxonomy * Class Granofilosea Cavalier-Smith & Bass 2009 Family ? Microgromiidae De Saedeleer 1934 * Genus '' Apogromia'' de Saedeleer 1934 * Genus '' Belaria'' de Saedeleer 1934 * Genus '' Heterogromia'' de Saedeleer 1934 * Genus '' Microgromia'' Hertwig & Lesser 1874 * Genus '' Paralieberkuehnia'' de Saedeleer 1934 Order ? Axomonadida xonucleoaxoplastiales* Family Tetradimorphidae Febvre-Chevalier & Febvre 1984 ** Genus '' Tetradimorpha'' Hsiung 1927 Order Desmothoracida Honigberg et al. 1964 ryptaxohelida; Desmothoraca Hertwig & Lesser 1874; Clathrulinida Starobogatov 1980* Family Clathrulinidae Claus 1874 Genus '' Actinosphaeridium'' Zacharias 1893 Genus '' Cienkowskya'' Schaudinn 1896 ... [...More Info...] [...Related Items...] OR:** [Wikipedia] [Google] [Baidu]
	Granofilosea Granofilosea is a class of cercozoans in the subphylum Filosa. Three groups that were traditionally considered heliozoans belong here: the Heliomonadida, Desmothoracida and Gymnosphaerida, which were recently grouped into the new class of Granofilosea. Taxonomy * Class Granofilosea Cavalier-Smith & Bass 2009 Family ? Microgromiidae De Saedeleer 1934 * Genus '' Apogromia'' de Saedeleer 1934 * Genus '' Belaria'' de Saedeleer 1934 * Genus '' Heterogromia'' de Saedeleer 1934 * Genus '' Microgromia'' Hertwig & Lesser 1874 * Genus '' Paralieberkuehnia'' de Saedeleer 1934 Order ? Axomonadida xonucleoaxoplastiales* Family Tetradimorphidae Febvre-Chevalier & Febvre 1984 ** Genus '' Tetradimorpha'' Hsiung 1927 Order Desmothoracida Honigberg et al. 1964 ryptaxohelida; Desmothoraca Hertwig & Lesser 1874; Clathrulinida Starobogatov 1980* Family Clathrulinidae Claus 1874 Genus '' Actinosphaeridium'' Zacharias 1893 Genus '' Cienkowskya'' Schaudinn 1896 ... [...More Info...] [...Related Items...] OR:** [Wikipedia] [Google] [Baidu]
picture info	Eukaryota 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]
	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 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
	Rhizaria The Rhizaria are an ill-defined but species-rich supergroup of mostly unicellular eukaryotes. Except for the Chlorarachniophytes and three species in the genus Paulinella in the phylum Cercozoa, they are all non-photosynthethic, but many foraminifera and radiolaria have a symbiotic relationship with unicellular algae. A multicellular form, ''Guttulinopsis vulgaris'', a cellular slime mold, has also been described. This group was used by Cavalier-Smith in 2002, although the term "Rhizaria" had been long used for clades within the currently recognized taxon. Being described mainly from rDNA sequences, they vary considerably in form, having no clear morphological distinctive characters (synapomorphies), but for the most part they are amoeboids with filose, reticulose, or microtubule-supported pseudopods. In the absence of an apomorphy, the group is ill-defined, and its composition has been very fluid. Some Rhizaria possess mineral exoskeleton (thecae or loricas), which is in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
	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 eukaryotic group to be recognized mainly through molecular phylogenies. They are the natural predators of many species of microbacteria and Archea. They are closely related to the phylum Retaria, comprising amoeboids that usually have complex shells, and together form a supergroup called Rhizaria. Characteristics The group includes most amoeboids and flagellates that feed by means of filose pseudopods. These may be restricted to part of the cell surface, but there is never a true cytostome or mouth as found in many other protozoa. They show a variety of forms and have proven difficult to define in terms of structural characteristics, although their unity is strongly supported by phylogenetic studies. Diversity Some cercozoans are ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
	Filosa 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 eukaryotic group to be recognized mainly through molecular phylogenies. They are the natural predators of many species of microbacteria and Archea. They are closely related to the phylum Retaria, comprising amoeboids that usually have complex shells, and together form a supergroup called Rhizaria. Characteristics The group includes most amoeboids and flagellates that feed by means of filose pseudopods. These may be restricted to part of the cell surface, but there is never a true cytostome or mouth as found in many other protozoa. They show a variety of forms and have proven difficult to define in terms of structural characteristics, although their unity is strongly supported by phylogenetic studies. Diversity Some cercozoans are grou ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
picture info	Protist A protist () is any eukaryotic organism (that is, an organism whose cells contain a cell nucleus) that is not an animal, plant, or fungus. While it is likely that protists share a common ancestor (the last eukaryotic common ancestor), the exclusion of other eukaryotes means that protists do not form a natural group, or clade. Therefore, some protists may be more closely related to animals, plants, or fungi than they are to other protists. However, like the groups '' algae'', ''invertebrates'', and '' protozoans'', the biological category ''protist'' is used for convenience. Others classify any unicellular eukaryotic microorganism as a protist. The study of protists is termed protistology. History The classification of a third kingdom separate from animals and plants was first proposed by John Hogg in 1860 as the kingdom Protoctista; in 1866 Ernst Haeckel also proposed a third kingdom Protista as "the kingdom of primitive forms". Originally these also included prokaryotes ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
	Reticulopodium {{Short pages monitor ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
picture info	Zoospore A zoospore is a motile asexual spore that uses a flagellum for locomotion. Also called a swarm spore, these spores are created by some protists, bacteria, and fungi to propagate themselves. Diversity Flagella types Zoospores may possess one or more distinct types of flagella - tinsel or "decorated", and whiplash, in various combinations. Tinsellated (straminipilous) flagella have lateral filaments known as mastigonemes perpendicular to their main axis, which allow for more surface area, and disturbance of the medium, giving them the property of a rudder, that is, used for steering. Whiplash flagella are straight, to power the zoospore through its medium. Also, the "default" zoospore only has the propelling, whiplash flagella. Both tinsel and whiplash flagella beat in a sinusoidal wave pattern, but when both are present, the tinsel beats in the opposite direction of the whiplash, to give two axes of control of motility. Morphological types In eukaryotes, the four main ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]