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Euglyphidae
The euglyphids are a prominent group of Filosa, filose amoebae that produce shells or Test (biology), tests that in most described species is reinforced by siliceous scales, plates, and sometimes spines, but this reinforcement is absent in other species. These elements are created within the cell and then assembled on its surface in a more or less regular arrangement, giving the test a textured appearance. There is a single opening for the long slender pseudopods, which capture food and pull the cell across the substrate. Euglyphids are common in soils, marshes, and other organic-rich environments, feeding on tiny organisms such as bacteria. The test is generally 30–100 μm in length, although the cell only occupies part of this space. During reproduction a second shell is formed opposite the opening, so both daughter cells remain protected. Different genera and species are distinguished primarily by the form of the test. ''Euglypha'' and ''Trinema'' are the most comm ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Trinematidae
The euglyphids are a prominent group of filose amoebae that produce shells or tests that in most described species is reinforced by siliceous scales, plates, and sometimes spines, but this reinforcement is absent in other species. These elements are created within the cell and then assembled on its surface in a more or less regular arrangement, giving the test a textured appearance. There is a single opening for the long slender pseudopods, which capture food and pull the cell across the substrate. Euglyphids are common in soils, marshes, and other organic-rich environments, feeding on tiny organisms such as bacteria. The test is generally 30–100 μm in length, although the cell only occupies part of this space. During reproduction a second shell is formed opposite the opening, so both daughter cells remain protected. Different genera and species are distinguished primarily by the form of the test. ''Euglypha'' and '' Trinema'' are the most common. The euglyphids are ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Trinema
''Trinema'' is a genus of testate amoeba in the phylum Cercozoa. It includes the species '' Trinema lineare''. Species of ''Trinema'' are common in freshwater and terrestrial habitats. Description ''Trinema'' is a testate amoeba: a type of amoeba that produces a protective outer shell, called a test. Tests are made of two different types of scales: large circular plates and smaller plates overlapping between them. The aperture (the hole through which the pseudopodia emerge) is circular, near the end of the test, and surrounded by toothed apertural scales. ''Trinema'' is a filose amoeba, meaning it moves via filopodia Filopodia (: filopodium) are slender cytoplasmic projections that extend beyond the leading edge of lamellipodia in migrating cells. Within the lamellipodium, actin ribs are known as ''microspikes'', and when they extend beyond the lamellipod .... Species are distinguished based on the size and shape of the test and aperture. Species show considerable variat ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Herbert Copeland (biologist)
Herbert Faulkner Copeland (May 21, 1902 – October 15, 1968) was an American biologist who contributed to the theory of biological kingdoms. He grouped unicellular organisms into two large kingdoms: the Monera kingdom and the Protista kingdom. In 1966, he included bacteria and one of the most primitive algae, called blue green algae, under Monera kingdom. His father was Edwin Copeland who was also the founder of the College of Agriculture at the University of the Philippines Los Banos and a leading pteridologist #REDIRECTFern The ferns (Polypodiopsida or Polypodiophyta) are a group of vascular plants (plants with xylem and phloem) that reproduce via spores and have neither seeds nor flowers. They differ from mosses by being vascular, i.e., having spec .... Bibliography * "The kingdoms of organisms", ''Quarterly review of biology'' v.13, pp. 383–420, 1938. * ''The classification of lower organisms'', Palo Alto, Calif., Pacific Books, 1956. References ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Protist
A protist ( ) or protoctist is any eukaryotic organism that is not an animal, land plant, or fungus. Protists do not form a natural group, or clade, but are a paraphyletic grouping of all descendants of the last eukaryotic common ancestor excluding land plants, animals, and fungi. Protists were historically regarded as a separate taxonomic kingdom known as Protista or Protoctista. With the advent of phylogenetic analysis and electron microscopy studies, the use of Protista as a formal taxon was gradually abandoned. In modern classifications, protists are spread across several eukaryotic clades called supergroups, such as Archaeplastida ( photoautotrophs that includes land plants), SAR, Obazoa (which includes fungi and animals), Amoebozoa and " Excavata". Protists represent an extremely large genetic and ecological diversity in all environments, including extreme habitats. Their diversity, larger than for all other eukaryotes, has only been discovered in rece ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Phototroph
Phototrophs () are organisms that carry out photon capture to produce complex organic compounds (e.g. carbohydrates) and acquire energy. They use the energy from light to carry out various cellular metabolic processes. It is a list of common misconceptions, common misconception that phototrophs are obligatorily photosynthetic. Many, but not all, phototrophs often photosynthesize: they anabolism, anabolically convert carbon dioxide into organic material to be utilized structurally, functionally, or as a source for later catabolism, catabolic processes (e.g. in the form of starches, sugars and fats). All phototrophs either use electron transport chains or direct proton pumping to establish an electrochemical gradient which is utilized by ATP synthase, to provide the molecular energy currency for the cell. Phototrophs can be either autotrophs or heterotrophs. If their electron and hydrogen donors are inorganic compounds (e.g., , as in some purple sulfur bacteria, or , as in some gr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mixotroph
A mixotroph is an organism that uses a mix of different sources of energy and carbon, instead of having a single trophic mode, on the continuum from complete autotrophy to complete heterotrophy. It is estimated that mixotrophs comprise more than half of all microscopic plankton. There are two types of eukaryotic mixotrophs. There are those with their own chloroplasts – including those with endosymbionts providing the chloroplasts. And there are those that acquire them through kleptoplasty, or through symbiotic associations with prey, or through 'enslavement' of the prey's organelles.Leles S G et al, (2017). Oceanic protists with different forms of acquired phototrophy display contrasting biogeographies and abundance, ''Proceedings of the Royal Society B: Biological Sciences''. Possible combinations are photo- and chemotrophy, litho- and organotrophy ( osmotrophy, phagotrophy and myzocytosis), auto- and heterotrophy or other combinations of these. Mixotrophs can be either eu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
2023 EuglyphidYEpk
3 (three) is a number, numeral and digit. It is the natural number following 2 and preceding 4, and is the smallest odd prime number and the only prime preceding a square number. It has religious and cultural significance in many societies. Evolution of the Arabic digit The use of three lines to denote the number 3 occurred in many writing systems, including some (like Roman and Chinese numerals) that are still in use. That was also the original representation of 3 in the Brahmic (Indian) numerical notation, its earliest forms aligned vertically. However, during the Gupta Empire the sign was modified by the addition of a curve on each line. The Nāgarī script rotated the lines clockwise, so they appeared horizontally, and ended each line with a short downward stroke on the right. In cursive script, the three strokes were eventually connected to form a glyph resembling a with an additional stroke at the bottom: ३. The Indian digits spread to the Caliphate in the 9th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
European Journal Of Protistology
''The European Journal of Protistology'' is a scientific journal that covers the entire scope of protistology, from their development and ecology to molecular biology. The journal is published by Elsevier. It is official journal of the Federation of European Protistological Societies. Abstracting and indexing The journal is abstracted and indexed for example in: * Web of Science The Web of Science (WoS; previously known as Web of Knowledge) is a paid-access platform that provides (typically via the internet) access to multiple databases that provide reference and citation data from academic journals, conference proceedi ... * Elsevier Biobase, Elsevier BIOBASE According to the ''Journal Citation Reports'', the journal has a 2021 impact factor of 3.471. References External links * Biology in Europe Biology journals English-language journals Elsevier academic journals {{biology-journal-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
