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Paraparaba Impositrix
''Paraparaba impositrix'' is a species of land planarian belonging to the subfamily Geoplaninae. It is found in areas of Atlantic Forest of Brazil and Argentina. Description ''Paraparaba impositrix'' has a dark-brown to black dorsal color with a ferruginous or brownish band, sometimes with a dark median stripe running inside it. It has many dorsal eyes surrounded by clear halos, which appear as light dots. Taxonomy Ernst Marcus first described ''Paraparaba impositrix'' in 1951, but misidentified it as ''Geoplana multicolor'', a species described by Ludwig von Graff in 1899. During the following decades, the species continued to be erroneously associated with ''Geoplana multicolor'' and even became the type-species of a new genus, ''Paraba'', in 2013. A recent analysis of the original material used by von Graff to describe ''Geoplana multicolor'' revealed that they are not conspecific and von Graff's specimen actually has the diagnostic features of the genus ''Geoplana ''Geopl ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Land Planarian
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] |
Geoplaninae
Geoplaninae is a subfamily of land planarians endemic to the Neotropical region. Members of this family are sometimes referred to as the Neotropical land planarians. However, one species, '' Obama nungara'' has been introduced in Europe. Description The subfamily Geoplaninae was initially defined by Ogren and Kawakatsu (1990)Ogren, R. E. and Kawakatsu, M. (1990). ''Index to the species of the family Geoplanidae (Turbellaria, Tricladida, Terricola) Part I: Geoplaninae.'' Bulletin of Fujis Women's College. 29: 79-166. for land planarians which have a broad creeping sole, mouth in the second half of the body, dorsal testes, subepithelial longitudinal musculature well developed and parenchymal longitudinal musculature absent or not well developed. The eyes contour the anterior region in a single row and posteriorly form several rows, which may spread onto the dorsum, and extend to the posterior end of the body. However, most, if not all, of these characteristics are not exclusive a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ernst Marcus (zoologist)
Ernst Gustav Gotthelf Marcus (8 June 1893 – 30 June 1968) was a German zoologist, occupant of the chair of zoology at the University of São Paulo from 1936 to 1963, and co-founder of the Oceanographic Institute of the University of São Paulo. Life Marcus was born in Berlin in a Jewish family, the son of Georg Marcus, a jurist, and Regina Schwartz. As a child, he lived near the Berlin Zoo, where he observed all kinds of animals, and collected beetles. He studied at the Kaiser Friedrich Gymnasium and later entered the Humboldt University of Berlin, Friedrich Wilhelm University to study zoology. He began his doctoral studies in the Entomology Department at the Berlin Museum and, in 1914, he published his first zoological work. However, his studies were later delayed due to World War I, where he fought as a soldier, and his second work, a thesis on Coleoptera, was published only in 1919, when he received his doctorate. After graduation, he continued to work at the museum and w ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ludwig Von Graff
Ludwig Graff de Pancsova (2 January 1851 – 6 February 1924), known as Ludwig von Graff, was an Austrian zoologist born in Pancsova. In 1871, he received his medical degree in Vienna, afterwards studying zoology at the University of Graz. In 1872, he was an assistant at the zoological institute in Strasbourg, where he worked closely with Eduard Oscar Schmidt (1823–1886). In 1873, he relocated to Munich as an assistant to Karl Theodor Ernst von Siebold (1804–1885), gaining his habilitation during the following year. In 1876, he became a professor at the Academy of Forestry in Aschaffenburg, and from 1884 was a professor of zoology at the University of Graz. Here, he expanded the institute of zoology and its library. In 1896-97, he was rector of the university. Graff was a leading expert on Turbellaria (flatworms), especially remembered for research of its morphology and biological systematics. He gathered material for his studies on numerous expeditions, which included jour ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Geoplana
''Geoplana'' is a genus of land planarians from South America. Taxonomic history The genus ''Geoplana'' was erected in 1857 by William Stimpson and included most land planarians with several eyes distributed along the body.Stimpson, W. (1857). ''Prodromus descriptionis animalium evertebratorum quæ in Expeditione ad Oceanum, Pacificum Septentrionalem a Republica Federata missa, Johanne Rodgers Duce, observavit er descripsit. Pars I. Turbellaria Dendrocœla.'' Proceedings of the Academy of Natural Sciences of Philadelphia. 9:19-31. Species with only two eyes were placed in the genus '' Rhynchodemus'', while species with a crescent-shaped head were placed in '' Bipalium''. In the same year, apparently unaware of Stimpson's paper, the naturalist Max Schultze, based on published information and new species collected in Brazil by the naturalist Fritz Müller, also erected a genus named ''Geoplana'', but included all land planarians in it.Schultze, M. and Müller, F. (1857). ''Beitr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Paraparaba
''Paraparaba'' is a genus of land planarians from South America. Description Species of the genus ''Paraparaba'' have a slender body with nearly parallel margins while creeping. The largest specimens may reach about 8 cm in length. Both sides of the body are slightly convex. The pharynx is cylindrical and the prostatic vesicle is extrabulbar. The copulatory apparatus has a permanent, protrusible, conical penis occupying the entire male cavity, which is unfolded, and the female cavity is rounded and filled with a multilayered epithelium. Taxonomy Species in the genus ''Paraparaba'' were first assigned to a genus named ''Paraba'', of which the chosen type species was ''Geoplana multicolor'' Graff, 1899. However, this was based on specimens that are not conspecific with the holotype of ''Geoplana multicolor''. An analysis of the holotype indicated that it matches the definition of the genus ''Geoplana'' and not ''Paraba''. This made ''Paraba'' become a junior synonym of '' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Platyhelminthes Of Brazil
Platyhelminthes (from the Greek πλατύ, ''platy'', meaning "flat" and ἕλμινς (root: ἑλμινθ-), ''helminth-'', meaning "worm") is a phylum of relatively simple bilaterian, unsegmented, soft-bodied invertebrates commonly called flatworms or flat worms. Being acoelomates (having no body cavity), and having no specialised circulatory and respiratory organs, they are restricted to having flattened shapes that allow oxygen and nutrients to pass through their bodies by diffusion. The digestive cavity has only one opening for both ingestion (intake of nutrients) and egestion (removal of undigested wastes); as a result, the food can not be processed continuously. In traditional medicinal texts, Platyhelminthes are divided into Turbellaria, which are mostly non-parasitic animals such as planarians, and three entirely parasitic groups: Cestoda, Trematoda and Monogenea; however, since the turbellarians have since been proven not to be monophyletic, this classification is no ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
