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Vorticella Citrina
''Vorticella convallaria'' is a species of ciliates. It forms part of the '' V. convallaria'' species complex In biology, a species complex is a group of closely related organisms that are so similar in appearance and other features that the boundaries between them are often unclear. The taxa in the complex may be able to hybridize readily with each oth .... ''V. citrina'' is lemon yellow to light green in colour. External linksFreshwater and terrestrial microbes of Idaho: ''Vorticella citrina'' Oligohymenophorea Species described in 1786 {{ciliate-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mull
Mull may refer to: Places *Isle of Mull, a Scottish island in the Inner Hebrides **Sound of Mull, between the Isle of Mull and the rest of Scotland * Mount Mull, Antarctica *Mull Hill, Isle of Man * Mull, Arkansas, a place along Arkansas Highway 14 *Mull, Indiana, a community in the United States *Mull of Galloway, a promontory in Wigtownshire, and the southernmost point in Scotland *Mull of Kintyre, the southwesternmost tip of the Kintyre Peninsula in Scotland Other uses * Mull (geographical term), a hill or promontory *Mull (surname) * ''Mull'' (film), a 1989 Australian film featuring Nadine Garner *Chicken mull, a traditional American dish from Carolina and Georgia *Mulling (spectroscopy), a technique of preparing a solid for infrared spectroscopy *Mull, a character in '' Atelier Iris: Eternal Mana'' *Mull, the gauze used in bookbinding See also *''Empire Mull'', ship *Mul (other) *''Mull 34'', sailing yacht *Mull Covered Bridge, near Burgoon, Ohio, on the National R ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ciliate
The ciliates are a group of alveolates characterized by the presence of hair-like organelles called cilia, which are identical in structure to flagellum, eukaryotic flagella, but are in general shorter and present in much larger numbers, with a different wikt:undulating, undulating pattern than flagella. Cilia occur in all members of the group (although the peculiar Suctoria only have them for part of their biological life cycle, life cycle) and are variously used in swimming, crawling, attachment, feeding, and sensation. Ciliates are an important group of protists, common almost anywhere there is water—in lakes, ponds, oceans, rivers, and soils. About 4,500 unique free-living species have been described, and the potential number of extant species is estimated at 27,000–40,000. Included in this number are many Ectosymbiosis, ectosymbiotic and endosymbiotic species, as well as some Obligate parasite, obligate and Facultative parasite, opportunistic parasites. Ciliate species r ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Vorticella Convallaria
''Vorticella convallaria'' is a species of ciliates. It is the type species of the genus ''Vorticella''. It resembles '' V. campanula'', but differs in being somewhat narrow in the anterior end and usually having no refractile granules in the endoplasm. ''Vorticella convallaria'' exhibits two morphological types. The primary type is the sessile trophont stalked zooid. When environmental conditions deteriorate the stalked zooid excises its stalk and transforms into ''Vorticella's'' secondary type, the motile dispersive telotroch. When the telotroch finds suitable environs it reattaches to the substrate and transforms back into a stalked zooid. The cell body of this species is 50-95 μm long and 35-53 μm wide. The peristome ranges from 55-75 μm in diameter. The rod-like, contractile stalk - the "spasmoneme" - is 25-300 μm long and 4 μm wide. It can collapse into a tightly coiled helix A helix () is a shape like a corkscrew or spiral staircase. It is a type of smooth spac ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Species Complex
In biology, a species complex is a group of closely related organisms that are so similar in appearance and other features that the boundaries between them are often unclear. The taxa in the complex may be able to hybridize readily with each other, further blurring any distinctions. Terms that are sometimes used synonymously but have more precise meanings are cryptic species for two or more species hidden under one species name, sibling species for two (or more) species that are each other's closest relative, and species flock for a group of closely related species that live in the same habitat. As informal taxonomic ranks, species group, species aggregate, macrospecies, and superspecies are also in use. Two or more taxa that were once considered conspecific (of the same species) may later be subdivided into infraspecific taxa (taxa within a species, such as bacterial strains or plant varieties), that is complex but it is not a species complex. A species complex is in most cas ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Oligohymenophorea
The Oligohymenophorea are a large class of ciliates. There is typically a ventral groove containing the mouth and distinct oral cilia, separate from those of the body. These include a paroral membrane to the right of the mouth and membranelles, usually three in number, to its left. The cytopharynx is inconspicuous and never forms the complex cyrtos found in similar classes. Body cilia generally arise from monokinetids, with dikinetids occurring in limited distribution over part of the body. In most groups the body cilia are uniform and often dense, while the oral cilia are inconspicuous and sometimes reduced, but among the peritrichs almost the opposite is the case. Members are widely distributed, and include many free-living (typically fresh-water, but many marine) and symbiotic forms. Most are microphagous, grazing on smaller organisms swept into the mouth by the cilia, but various other feeding habits occur. In one group, the astomes, the mouth and associated structure ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
