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Rissoella Verruculosa
''Rissoella verruculosa'' is a species of red algae, the only accepted species in the genus ''Risoella'' and the family Rissoellaceae. This species is endemic to the Mediterranean Sea. The genus name of ''Rissoella'' is in honour of Giuseppe Antonio Risso (1777–1845) and generally called Antoine Risso, who was a Niçard and a naturalist. ''Rissoella verruculosa'' has an amino acid composition with relatively high levels of lysine and methionine for a plant. Former species ''Rissoella denticulata'' , now accepted as a synonym for '' Neorubra denticulata'' Description ''Rissoella verruculosa'' consists of simple or unbranched ribbon-like slings that are often twisted with wavy and denticulated borders. It has slingshots measuring 0.5 to 2cm wide and 5 to 20 cm in length. A stipe connects the slings to a discoid base and attaches them to the rock. The consistency of the seaweed is rubbery, yellow more or less orange or reddish, varies with lighting and moistening. It tur ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Red Algae
Red algae, or Rhodophyta (, ; ), are one of the oldest groups of eukaryotic algae. The Rhodophyta also comprises one of the largest phyla of algae, containing over 7,000 currently recognized species with taxonomic revisions ongoing. The majority of species (6,793) are found in the Florideophyceae (class), and mostly consist of multicellular, marine algae, including many notable seaweeds. Red algae are abundant in marine habitats but relatively rare in freshwaters. Approximately 5% of red algae species occur in freshwater environments, with greater concentrations found in warmer areas. Except for two coastal cave dwelling species in the asexual class Cyanidiophyceae, there are no terrestrial species, which may be due to an evolutionary bottleneck in which the last common ancestor lost about 25% of its core genes and much of its evolutionary plasticity. The red algae form a distinct group characterized by having eukaryotic cells without flagella and centrioles, chloroplasts that l ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Monotypic Taxon
In biology, a monotypic taxon is a taxonomic group (taxon) that contains only one immediately subordinate taxon. A monotypic species is one that does not include subspecies or smaller, infraspecific taxa. In the case of genera, the term "unispecific" or "monospecific" is sometimes preferred. In botanical nomenclature, a monotypic genus is a genus in the special case where a genus and a single species are simultaneously described. In contrast, an oligotypic taxon contains more than one but only a very few subordinate taxa. Examples Just as the term ''monotypic'' is used to describe a taxon including only one subdivision, the contained taxon can also be referred to as monotypic within the higher-level taxon, e.g. a genus monotypic within a family. Some examples of monotypic groups are: Plants * In the order Amborellales, there is only one family, Amborellaceae and there is only one genus, '' Amborella'', and in this genus there is only one species, namely ''Amborella trichopoda ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Endemism
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 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 aeolicus'' is an endemite of the Italian flora. '' Adzharia renschi'' was once believed to be an endemite of the Caucasus, but it was later discovered to be a non-indigenous species from South America belonging to a different genus. The extreme opposite of an endemic species is one with a cosmopolitan distribution, having a global or widespread range. A rare alternative term for a species that is endemic is "precinctive", which applies to ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mediterranean Sea
The Mediterranean Sea is a sea connected to the Atlantic Ocean, surrounded by the Mediterranean Basin and almost completely enclosed by land: on the north by Western and Southern Europe and Anatolia, on the south by North Africa, and on the east by the Levant. The Sea has played a central role in the history of Western civilization. Geological evidence indicates that around 5.9 million years ago, the Mediterranean was cut off from the Atlantic and was partly or completely desiccated over a period of some 600,000 years during the Messinian salinity crisis before being refilled by the Zanclean flood about 5.3 million years ago. The Mediterranean Sea covers an area of about , representing 0.7% of the global ocean surface, but its connection to the Atlantic via the Strait of Gibraltar—the narrow strait that connects the Atlantic Ocean to the Mediterranean Sea and separates the Iberian Peninsula in Europe from Morocco in Africa—is only wide. The Mediterranean Sea e ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Giuseppe Antonio Risso
Giuseppe Antonio Risso (8 April 1777 – 25 August 1845), called Antoine Risso, was a Niçard and naturalist. Risso was born in the city of Nice in the Duchy of Savoy, and studied under Giovanni Battista Balbis. He published ' (1810), ' (1826) and ' (1818–1822). Risso's dolphin was named after him. He is denoted by the author abbreviation Risso when citing a botanical name; the same abbreviation is used for zoological names. Genera and species named after him * '' Rissoa'' : a genus of gastropods * '' Rissoella'' : a genus of gastropod * '' Rissoella'' : a genus of red algae * '' Electrona risso'' : a lanternfish *'' Polyacanthonotus rissoanus'' : smallmouth spiny eel Genera and species named by him He named 549 marine genera and species. IPNI The International Plant Names Index (IPNI) describes itself as "a database of the names and associated basic bibliographical details of seed plants, ferns and lycophytes." Coverage of plant names is best at the rank of specie ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rissoella
Rissoella is a genus of minute sea snails, marine (ocean), marine gastropods, in the family Rissoellidae. MolluscaBase eds. (2022). MolluscaBase. Rissoella Gray, 1847. Accessed through: World Register of Marine Species at: https://www.marinespecies.org/aphia.php?p=taxdetails&id=138438 on 2022-04-15 Species According to the World Register of Marine Species (WoRMS), the following species with valid names are included within the genus ''Rissoella'' Synonyms * ''Rissoella bakeri'' A. M. Strong, 1938: synonym of ''Elachisina bakeri'' (A. M. Strong, 1938) * ''Rissoella bifasciata'' (Carpenter, 1857): synonym of ''Barleeia bifasciata'' (Carpenter, 1856) * ''Rissoella californica'' Bartsch, 1927: synonym of ''Elachisina grippi'' Dall, 1918 * ''Rissoella duperrei'' (Vélain, 1877): synonym of ''Eatoniella duperrei'' (Vélain, 1877) * ''Rissoella excolpa'' Bartsch, 1920: synonym of ''Elachisina grippi'' Dall, 1918 * ''Rissoella glaber'' Gray, 1847: synonym of ''Rissoella glabra'' Gray, 1 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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