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Marbled Pearlfish
''Leptolebias marmoratus'', the marbled pearlfish, annual tropical killifish or ginger pearlfish, is a species of killifish in the family Rivulidae. This threatened species is found in temporary channels within dense Atlantic rainforest, in the floodplains of rivers draining into the Baía de Guanabara, near the city of Rio de Janeiro in southeastern Brazil.Costa, W.J.E.M. (2016)Comparative morphology and classification of South American cynopoeciline killifishes (Cyprinodontiformes: Aplocheilidae), with notes on family-group names used for aplocheiloids.''Vertebrate Zoology, 66 (2): 125-140.'' It reaches up to in total length. This species may be the only member of its genus, the inclusion of several others made ''Leptolebias'' paraphyletic, according to some workers. To avoid this, some authorities moved the other species to ''Leptopanchax'', ''Mucurilebias'' and ''Notholebias ''Notholebias'' is a genus of fish in the family Rivulidae. These threatened annual killifish are ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Werner Ladiges
Werner may refer to: People * Werner (name), origin of the name and people with this name as surname and given name Fictional characters * Werner (comics), a German comic book character * Werner Von Croy, a fictional character in the ''Tomb Raider'' series * Werner von Strucker, a fictional character in the Marvel Comics universe * Werner, a fictional character in '':File:Darwin's Soldiers image.png, Darwin's Soldiers'' * Werner Ziegler, a fictional character from tv show Better Call Saul Geography *Werner, West Virginia * Mount Werner, a mountain that includes the Steamboat Ski Resort, in the Park Range of Colorado * Werner (crater), a crater in the south-central highlands of the Moon * Werner projection, an equal-area map projection preserving distances along parallels, central meridian and from the North pole Companies * Carsey-Werner, an American television and film production studio * Werner Enterprises, a Nebraska-based trucking company * Werner Co., a manufacturer of ladd ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Paraphyletic
In taxonomy (general), taxonomy, a group is paraphyletic if it consists of the group's most recent common ancestor, last common ancestor and most of its descendants, excluding a few Monophyly, monophyletic subgroups. The group is said to be paraphyletic ''with respect to'' the excluded subgroups. In contrast, a monophyletic group (a clade) includes a common ancestor and ''all'' of its descendants. The terms are commonly used in phylogenetics (a subfield of biology) and in the tree model of historical linguistics. Paraphyletic groups are identified by a combination of Synapomorphy and apomorphy, synapomorphies and symplesiomorphy, symplesiomorphies. If many subgroups are missing from the named group, it is said to be polyparaphyletic. The term was coined by Willi Hennig to apply to well-known taxa like Reptilia (reptiles) which, as commonly named and traditionally defined, is paraphyletic with respect to mammals and birds. Reptilia contains the last common ancestor of reptiles a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Taxonomy Articles Created By Polbot
Taxonomy is the practice and science of categorization or classification. A taxonomy (or taxonomical classification) is a scheme of classification, especially a hierarchical classification, in which things are organized into groups or types. Among other things, a taxonomy can be used to organize and index knowledge (stored as documents, articles, videos, etc.), such as in the form of a library classification system, or a search engine taxonomy, so that users can more easily find the information they are searching for. Many taxonomies are hierarchies (and thus, have an intrinsic tree structure), but not all are. Originally, taxonomy referred only to the categorisation of organisms or a particular categorisation of organisms. In a wider, more general sense, it may refer to a categorisation of things or concepts, as well as to the principles underlying such a categorisation. Taxonomy organizes taxonomic units known as "taxa" (singular "taxon")." Taxonomy is different from ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Taxa Named By Werner Ladiges
In biology, a taxon (back-formation from ''taxonomy''; plural taxa) is a group of one or more populations of an organism or organisms seen by taxonomists to form a unit. Although neither is required, a taxon is usually known by a particular name and given a particular ranking, especially if and when it is accepted or becomes established. It is very common, however, for taxonomists to remain at odds over what belongs to a taxon and the criteria used for inclusion. If a taxon is given a formal scientific name, its use is then governed by one of the nomenclature codes specifying which scientific name is correct for a particular grouping. Initial attempts at classifying and ordering organisms (plants and animals) were set forth in Carl Linnaeus's system in ''Systema Naturae'', 10th edition (1758), as well as an unpublished work by Bernard and Antoine Laurent de Jussieu. The idea of a unit-based system of biological classification was first made widely available in 1805 in the int ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Freshwater Fish Of Brazil
Fresh water or freshwater is any naturally occurring liquid or frozen water containing low concentrations of dissolved salts and other total dissolved solids. Although the term specifically excludes seawater and brackish water, it does include non- salty mineral-rich waters such as chalybeate springs. Fresh water may encompass frozen and meltwater in ice sheets, ice caps, glaciers, snowfields and icebergs, natural precipitations such as rainfall, snowfall, hail/ sleet and graupel, and surface runoffs that form inland bodies of water such as wetlands, ponds, lakes, rivers, streams, as well as groundwater contained in aquifers, subterranean rivers and lakes. Fresh water is the water resource that is of the most and immediate use to humans. Water is critical to the survival of all living organisms. Many organisms can thrive on salt water, but the great majority of higher plants and most insects, amphibians, reptiles, mammals and birds need fresh water to survive. Fresh wate ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Endemic Fish Of Brazil
Endemism is the state of a species being found in a single defined geographic location, such as an island, state, nation, country or other defined zone; organisms that are indigenous to a place are not endemic to it if they are also found elsewhere. For example, the Cape sugarbird The Cape sugarbird (''Promerops cafer'') is one of the eight bird species endemic to the Fynbos biome of the Western Cape and Eastern Cape provinces of South Africa. Description The Cape sugarbird is a grey-brown bird that is easily recognisab ... is found exclusively in southwestern South Africa and is therefore said to be ''endemic'' to that particular part of the world. An endemic species can be also be referred to as an ''endemism'' or in scientific literature as an ''endemite''. For example ''Cytisus, Cytisus aeolicus'' is an endemite of the Italian flora. ''Enidae, Adzharia renschi'' was once believed to be an endemite of the Caucasus, but it was later discovered to be a Invasive species, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Leptolebias
''Leptolebias'' is a ray-finned fish genus of the killifish family Rivulidae. Like many of their relatives, they are rather ambiguously known as " pearlfish". They are endemic to the coastal areas of Brazil, where they inhabit ephemeral pools in tropical forests like the Mata Atlântica (or what remains thereof) and restinga. Rare and little-known, the entire genus seems to be close to extinction. Specifically, ''Leptolebias'' species have been found in two regions to date: between Maricá and Vila de Cava in Rio de Janeiro state, and between Itanhaém in southern São Paulo state and the Paranaguá bay catchment area in Paraná state. Description These small fishes measure only 2–3 cm (around one inch) in standard length. The females are colored uniformly brown, without darker markings, as are the females of some related killifishes. The males may have some dark pigmentation, but it does not extend into the distal dorsal fin, as it does in many related genera. Other ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Notholebias
''Notholebias'' is a genus of fish in the family Rivulidae. These threatened annual killifish are endemic temporary waters, like ponds, in the Atlantic Forest in Rio de Janeiro state, Brazil (the equally threatened killifish genera ''Leptolebias'' and '' Nematolebias'' are restricted to the same state).Costa, W.J.E.M. & Amorim, P.F. (2013): Delimitation of cryptic species of ''Notholebias'', a genus of seasonal miniature killifishes threatened with extinction from the Atlantic Forest of south-eastern Brazil (Cyprinodontiformes: Rivulidae). ''Ichthyological Exploration of Freshwaters, 24 (1): 63-72.'' They are small fish that are up to in total length. Like other killifish, the males are more colorful than females and the primary difference between the species is the male colors. Species ''Notholebias'' was formerly included in ''Leptolebias ''Leptolebias'' is a ray-finned fish genus of the killifish family Rivulidae. Like many of their relatives, they are rather ambiguously ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mucurilebias
''Mucurilebias leitaoi'' is a species of rivulid killifish endemic to Brazil where it occurs, or formerly occurred, in the basin of the Mucuri River. This species can reach a length of TL. This species has not been seen since the original series of types was collected in 1988 and it may have become extinct due to the extensive habitat loss in the region. This species is the only known member of its genus, but it was formerly included in ''Leptolebias''.Costa, W.J.E.M. (2014)A new genus of miniature cynolebiasine from the Atlantic Forest and alternative biogeographical explanations for seasonal killifish distribution patterns in South America (Cyprinodontiformes: Rivulidae). ''Vertebrate Zoology, 64 (1): 23–33''. The specific name of this fish honours the Brazilian ichthyologist and herpetologist Antenor Leitão de Carvalho Antenor Leitão de Carvalho is a Brazilian herpetologist and ichthyologist, born on 15 April 1910 and died on 11 December 1985 in Rio de Janeiro. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Leptopanchax
''Leptopanchax'' is a genus of small fish, up to long, in the family Rivulidae. They are found in southeastern Brazil from Paraná to Rio de Janeiro.Costa, W.J.E.M. (2016)Comparative morphology and classification of South American cynopoeciline killifishes (Cyprinodontiformes: Aplocheilidae), with notes on family-group names used for aplocheiloids.''Vertebrate Zoology, 66 (2): 125-140.'' Depending on the exact species, they inhabit small seasonal channels in the Atlantic rainforest or temporary pools in open habitats. Several ''Leptopanchax'' species are very rare and '' L. sanguineus'' is possibly extinct. Species The species in ''Leptopanchax'' were formerly included in ''Leptolebias'', but this makes the latter genus paraphyletic, although they are still placed in that genus by Fishbase. There are currently 6 recognized species in ''Leptopanchax'': * ''Leptopanchax aureoguttatus'' ( da Cruz, 1974) * ''Leptopanchax citrinipinnis'' ( W. J. E. M. Costa, Lacerda & Tanizaki, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Genus
Genus ( plural genera ) is a taxonomic rank used in the biological classification of living and fossil organisms as well as viruses. In the hierarchy of biological classification, genus comes above species and below family. In binomial nomenclature, the genus name forms the first part of the binomial species name for each species within the genus. :E.g. '' Panthera leo'' (lion) and '' Panthera onca'' (jaguar) are two species within the genus ''Panthera''. ''Panthera'' is a genus within the family Felidae. The composition of a genus is determined by taxonomists. The standards for genus classification are not strictly codified, so different authorities often produce different classifications for genera. There are some general practices used, however, including the idea that a newly defined genus should fulfill these three criteria to be descriptively useful: # monophyly – all descendants of an ancestral taxon are grouped together (i.e. phylogenetic analysis should c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Species
In biology, a species is the basic unit of Taxonomy (biology), classification and a taxonomic rank of an organism, as well as a unit of biodiversity. A species is often defined as the largest group of organisms in which any two individuals of the appropriate sexes or mating types can reproduction, produce Fertility, fertile offspring, typically by sexual reproduction. Other ways of defining species include their karyotype, DNA sequence, morphology (biology), morphology, behaviour or ecological niche. In addition, paleontologists use the concept of the chronospecies since fossil reproduction cannot be examined. The most recent rigorous estimate for the total number of species of eukaryotes is between 8 and 8.7 million. However, only about 14% of these had been described by 2011. All species (except viruses) are given a binomial nomenclature, two-part name, a "binomial". The first part of a binomial is the genus to which the species belongs. The second part is called the specifi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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