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The sorocysts themselves can be different shapes including oblong, ovoid, and angular, and they produce only one monopodial amoeba. They are smooth-walled hyaline and uninucleated as well, averaging 8–13 μm in size. [6] Upon germination, a sorocyst becomes an amoeba. The amoeba is limax-shaped and uninucleate.
A defining feature of Sappinia, which separates it from its sister genus Thecamoeba, is the presence of two closely apposed nuclei with a central, flattened connection. [2] [3] Sappinia species have two life cycle stages: a trophozoite and a cyst. [2] Up until 2015, only two species had been discovered, Sappinia pedata and Sappinia diploidea.
Clockwise from top right: Amoeba proteus, Actinophrys sol, Acanthamoeba sp., Nuclearia thermophila., Euglypha acanthophora, neutrophil ingesting bacteria. An amoeba (/ ə ˈ m iː b ə /; less commonly spelled ameba or amœba; pl.: amoebas (less commonly, amebas) or amoebae (amebae) / ə ˈ m iː b i /), [1] often called an amoeboid, is a type of cell or unicellular organism with the ability ...
Sappinia pedata is a free living amoeboid organism, first described by Pierre Augustin Dangeard in 1896. It belongs to the genus Sappinia within the Thecamoebida clade of Amoebozoa and is characterized by its unique monopodial locomotion and cell surface morphology.
The most important genera are Amoeba and Chaos, which are set apart from the others by longitudinal ridges. The best known of the species in this family is Amoeba proteus , commonly used in classrooms to demonstrate movement by pseudopodia.
Some of these are: R. schnepfii Kühn 1996/97 (considered nomen dubium since it has not been deposited to any culture collection), Trichamoeba caerulea Schaeffer 1926 and Trichamoeba clava Schaeffer 1926 (both transferred to Rhizamoeba in 1980 [4] but poorly documented), Amoeba clavarioides Penard 1902 (identified as R. clavarioides through ...
An amoeba of the genus Mayorella (Amoebozoa, Discosea). Amoebozoa is a large and diverse group, but certain features are common to many of its members. The amoebozoan cell is typically divided into a granular central mass, called endoplasm, and a clear outer layer, called ectoplasm.
It is a member of the Filasterea, that is the sister-group to Choanoflagellatea and Metazoa. [2] [3] Two Ministeria amoebae species have been reported so far, [4] both of them from coastal marine water samples: M. vibrans and M. marisola. [1] However, there is currently only one culture available, that of Ministeria vibrans.