|
Amaga (genus)
''Amaga'' is a genus of land planarians from South America. Description The genus ''Amaga'' was erected by Robert E. Ogren and Masaharu Kawakatsu to include Neotropical land planarians with an intra-antral penis papilla, i.e., a small penis papilla at the proximal end of a folded male atrium. A recent redescription of the type species, ''Amaga amagensis'', revealed that the intra-antral penis papilla is not a permanent structure as previously thought. A new diagnosis of the genus describes it as Geoplaninid land planarians with a large and broad, flat body and a well-developed glandular margin, i.e., several glands discharge along the margins of the body, which can be observed in histological sections. The testes are located at the dorsum, above the parenchymal transverse muscles, while most species in the subfamily Geoplaninae have dorsal testes beneath the parenchymal transverse muscles. The copulatory apparatus lacks a permanent penis and the ovovitelline ducts enter th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Robert E
The name Robert is an ancient Germanic given name, from Proto-Germanic "fame" and "bright" (''Hrōþiberhtaz''). Compare Old Dutch ''Robrecht'' and Old High German ''Hrodebert'' (a compound of '' Hruod'' ( non, Hróðr) "fame, glory, honour, praise, renown" and '' berht'' "bright, light, shining"). It is the second most frequently used given name of ancient Germanic origin. It is also in use as a surname. Another commonly used form of the name is Rupert. After becoming widely used in Continental Europe it entered England in its Old French form ''Robert'', where an Old English cognate form (''Hrēodbēorht'', ''Hrodberht'', ''Hrēodbēorð'', ''Hrœdbœrð'', ''Hrœdberð'', ''Hrōðberχtŕ'') had existed before the Norman Conquest. The feminine version is Roberta. The Italian, Portuguese, and Spanish form is Roberto. Robert is also a common name in many Germanic languages, including English, German, Dutch, Norwegian, Swedish, Scots, Danish, and Icelandic. It c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Guadeloupe
Guadeloupe (; ; gcf, label=Antillean Creole, Gwadloup, ) is an archipelago and overseas department and region of France in the Caribbean. It consists of six inhabited islands— Basse-Terre, Grande-Terre, Marie-Galante, La Désirade, and the two inhabited Îles des Saintes—as well as many uninhabited islands and outcroppings. It is south of Antigua and Barbuda and Montserrat, north of the Commonwealth of Dominica. The region's capital city is Basse-Terre, located on the southern west coast of Basse-Terre Island; however, the most populous city is Les Abymes and the main centre of business is neighbouring Pointe-à-Pitre, both located on Grande-Terre Island. It had a population of 384,239 in 2019.Populations légales 2019: 971 Guadeloupe INSEE Like the other overseas departments, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Amaga Ortizi
''Amaga'' is a genus of land planarians from South America. Description The genus ''Amaga'' was erected by Robert E. Ogren and Masaharu Kawakatsu to include Neotropical land planarians with an intra-antral penis papilla, i.e., a small penis papilla at the proximal end of a folded male atrium. A recent redescription of the type species, ''Amaga amagensis'', revealed that the intra-antral penis papilla is not a permanent structure as previously thought. A new diagnosis of the genus describes it as Geoplaninid land planarians with a large and broad, flat body and a well-developed glandular margin, i.e., several glands discharge along the margins of the body, which can be observed in histological sections. The testes are located at the dorsum, above the parenchymal transverse muscles, while most species in the subfamily Geoplaninae have dorsal testes beneath the parenchymal transverse muscles. The copulatory apparatus lacks a permanent penis and the ovovitelline ducts enter ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Obama Nungara
''Obama nungara'' is a species of land planarian in the family Geoplanidae. It is native to South America, but has been introduced in Europe. Description ''Obama nungara'' is a medium-sized land planarian with a lanceolate body, being up to long. The background color of the dorsum varies from golden yellow to honey yellow and is covered by dark-brown to black spots and flecks aggregated in short and irregular longitudinal streaks, giving it a light to dark-brown marbled appearance. A fine line devoid of brown pigmentation usually runs longitudinally along the middle of the dorsum, sometimes having a diffuse dark border formed by concentration of the brown pigmentation. In some specimens this line is also covered by pigmentation and is almost unnoticeable. The ventral side has a uniform cream to grey-white color. As in most species of the genus ''Obama'', ''O. nungara'' has hundreds of eyes distributed along the body. They form a single row around the anterior tip and afte ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Geoplanidae
Geoplanidae is a family of flatworms known commonly as land planarians or land flatworms. These flatworms are mainly predators of other invertebrates, which they hunt, attack and capture using physical force and the adhesive and digestive properties of their mucus. They lack water-retaining mechanisms and are therefore very sensitive to humidity variations of their environment. Because of their strict ecological requirements, some species have been proposed as indicators of the conservation state of their habitats. They are generally animals with low vagility (dispersal ability) and with very specific habitat requirements, so they can be also used to accurately determine the distribution of biogeographic realms. Today the fauna of these animals is being studied to select conservation priorities in the Atlantic rainforest in Brazil. At the other extreme, one species in this family, ''Platydemus manokwari'' has become an invasive species in both disturbed and wild habitats in the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mitochondrial Genome
Mitochondrial DNA (mtDNA or mDNA) is the DNA located in mitochondria, cellular organelles within eukaryotic cells that convert chemical energy from food into a form that cells can use, such as adenosine triphosphate (ATP). Mitochondrial DNA is only a small portion of the DNA in a eukaryotic cell; most of the DNA can be found in the cell nucleus and, in plants and algae, also in plastids such as chloroplasts. Human mitochondrial DNA was the first significant part of the human genome to be sequenced. This sequencing revealed that the human mtDNA includes 16,569 base pairs and encodes 13 proteins. Since animal mtDNA evolves faster than nuclear genetic markers, it represents a mainstay of phylogenetics and evolutionary biology. It also permits an examination of the relatedness of populations, and so has become important in anthropology and biogeography. Origin Nuclear and mitochondrial DNA are thought to be of separate evolutionary origin, with the mtDNA being deri ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
