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Planaria is a genus of planarians in the family Planariidae. Due to its excellent ability to regenerate, species of Planaria has also been used as model organisms in regeneration studies. [ 1 ] When an individual is cut into pieces, each piece has the ability to regenerate into a fully formed individual. [ 2 ]
Each planarian transports its secretion to the other planarian, giving and receiving sperm. Eggs develop inside the body and are shed in capsules. Weeks later, the eggs hatch and grow into adults. In asexual reproduction, the planarian fissions and each fragment regenerates its missing tissues, generating complete anatomy and restoring ...
Dendrocoelum lacteum, the milk-white planarian, is a freshwater planarian found in lakes and running waters in Europe, being the most widespread freshwater planarian in this continent. Description [ edit ]
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Planaria torva is a species of planarian in the family Planariidae. [1] When an individual is cut into pieces, each piece has the ability to regenerate into a fully ...
The complete mitogenome of Caenoplana coerulea is 18,621 bp in length. [7] Its main characteristic is a cytochrome c oxidase subunit 2 gene of unusual length, with a cox2 encoded protein 505 aa in length (compared to about 250 aa in other geoplanids); this characteristic of a very long cox2 is also found in other members of the subfamily Rhynchodeminae, to which Caenoplana coerulea belongs.
During most of the 20th century, many new land planarian species, mostly from Australia and South America, were placed in Geoplana. In 1955, Eudóxia Maria Froehlich defined that Geoplana vaginuloides would be the type-species of Geoplana , as it was the first species listed by Stimpson.
Girardia tigrina, known as the brown planarian or the immigrant triclad flatworm, is a species of dugesiid native to the Americas. [1] It has been accidentally introduced into Europe [ 2 ] and Japan. [ 3 ]