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Leiostyla Relevata
''Leiostyla relevata'' is a species of small air-breathing land snail in the family Lauriidae. It is endemism, endemic to Cal Islet, Ilhéu de Baixo, an islet near Porto Santo Island in the Madeira archipelago. This snail is only known from a single site on the wet seaside cliffs of the islet. The population, though small, is likely stable because the island is isolated from most threats. References Leiostyla Endemic fauna of Madeira Molluscs of Madeira Porto Santo Island Gastropods described in 1878 Taxonomy articles created by Polbot {{Pupillidae-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Land Snail
A land snail is any of the numerous species of snail that live on land, as opposed to the sea snails and freshwater snails. ''Land snail'' is the common name for terrestrial molluscs, terrestrial gastropod mollusks that have gastropod shell, shells (those without shells are known as slugs). However, it is not always easy to say which species are terrestrial, because some are more or less amphibious between land and fresh water, and others are relatively amphibious between land and salt water. Land snails are a Polyphyly, polyphyletic group comprising at least ten independent evolutionary transitions to terrestrial life (the last common ancestor of all gastropods was marine). The majority of land snails are pulmonates that have a lung and breathe air. Most of the non-pulmonate land snails belong to lineages in the Caenogastropoda, and tend to have a gill and an operculum (gastropod), operculum. The largest clade of non-pulmonate land snails is the Cyclophoroidea, with more than 7,0 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lauriidae
Lauriidae is a family of land snails. It is classified within the informal group Orthurethra, itself belonging to the clade Stylommatophora within the clade Eupulmonata (according to the taxonomy of the Gastropoda by Bouchet & Rocroi, 2005). The family Lauriidae has no subfamilies. Genera Genera include: Fauna Europaea. *'' Hemilauria'' Waldén, 1983 * '''' Gray, 1840 * '' Leiostyla
''Leiostyla'' is a gen ...
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Endemism
Endemism is the state of a species being found only 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 also be referred to as an ''endemism'' or, in scientific literature, as an ''endemite''. Similarly, many species found in the Western ghats of India are examples of endemism. Endemism is an important concept in conservation biology for measuring biodiversity in a particular place and evaluating the risk of extinction for species. Endemism is also of interest in evolutionary biology, because it provides clues about how changes in the environment cause species to undergo range shifts (potentially expanding their range into a larger area or b ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cal Islet
Cal Islet (, also: ''Ilhéu de Baixo'') is a small island about south of Porto Santo Island, in the Madeira, Madeira Archipelago, Portugal. With an area of , Cal is the largest of six islets close to Porto Santo. The highest point is . The islet has never been inhabited. History Cal Islet houses an important testimony to the history and culture of Porto Santo. It was once mined for Lime (material), lime (''cal'' in Portuguese). Its extraction led to several accidents, one of which killed sixteen workers, victims of a mine collapse. The mines are no longer active, but remnants are still intact and can be visited with a proper license and specialized escort. The construction of a Aerial lift, cable car was planned to connect the tip of Calheta (in Porto Santo) to the islet. The project was abandoned because the large numbers of visitors would have endangered the regeneration of the islet's fragile ecosystem. Ecological Preservation Despite its rough appearance, this islet is h ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Porto Santo Island
Porto Santo Island () is a Portuguese island and municipality northeast of Madeira Island in the North Atlantic Ocean; it is the northernmost and easternmost island of the archipelago of Madeira, located in the Atlantic Ocean west of Europe and Africa. The municipality of Porto Santo occupies the entire island and small neighbouring islands. It was elevated to city status on 6 August 1996. The sole parish of the municipality is also named Porto Santo. The population in 2011 was 5,483, in an area of 42.59 km2. The main settlement on the island is Vila Baleira. History It appears that some knowledge of Atlantic islands, such as Madeira, existed before the discovery and settlement of these lands, as the islands appear on maps as early as 1339. From a portolan dating to 1351, and preserved in Florence, Italy, it would appear that the islands of Madeira had been discovered long before being claimed by the Portuguese expedition of 1418. In '' Libro del Conocimiento'' (1348� ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Madeira
Madeira ( ; ), officially the Autonomous Region of Madeira (), is an autonomous Regions of Portugal, autonomous region of Portugal. It is an archipelago situated in the North Atlantic Ocean, in the region of Macaronesia, just under north of the Canary Islands, Spain, west of the Morocco and southwest of mainland Portugal. Madeira sits on the African Plate, African Tectonic Plate, but is culturally, politically and ethnically associated with Europe, with its population predominantly descended from Portuguese settlers. Its population was 251,060 in 2021. The capital of Madeira is Funchal, on the main island's south coast. The archipelago includes the islands of Madeira Island, Madeira, Porto Santo Island, Porto Santo, and the Desertas Islands, Desertas, administered together with the separate archipelago of the Savage Islands. Roughly half of the population lives in Funchal. The region has political and administrative autonomy through the Autonomous Regions of Portugal#Const ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Leiostyla
''Leiostyla'' is a genus of small air-breathing land snails, terrestrial pulmonate gastropod mollusks in the family Lauriidae.Falkner G., Obrdlík P., Castella E. & Speight M. C. D. 2001 ''Shelled Gastropoda of Western Europe''. München: Friedrich-Held-Gesellschaft, 267 pp.MolluscaBase eds. (2021). MolluscaBase. Leiostyla R. T. Lowe, 1852. Accessed through: World Register of Marine Species at: http://www.marinespecies.org/aphia.php?p=taxdetails&id=842729 on 2021-04-29 The genus ''Leiostyla'' was previously placed in the subfamily Lauriinae, within the family Pupillidae. Species Species in the genus ''Leiostyla'' include: * '' Leiostyla abbreviata'' (R. T. Lowe, 1852) - also known as Madeiran land snail * '' Leiostyla albina'' (Pilsbry, 1931) * ''Leiostyla anglica'' (A. Férussac, 1821) * '' Leiostyla arborea'' (R. T. Lowe, 1855) * † ''Leiostyla austriaca'' (Wenz, 1921) * '' Leiostyla beatae'' Walther & Hausdorf, 2015 * '' Leiostyla calathiscus'' (R. T. Lowe, 1831) * † ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Endemic Fauna Of Madeira
Endemism is the state of a species being found only 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 also be referred to as an ''endemism'' or, in scientific literature, as an ''endemite''. Similarly, many species found in the Western ghats of India are examples of endemism. Endemism is an important concept in conservation biology for measuring biodiversity in a particular place and evaluating the risk of extinction for species. Endemism is also of interest in evolutionary biology, because it provides clues about how changes in the environment cause species to undergo range shifts (potentially expanding their range into a larger area or becoming ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Molluscs Of Madeira
Mollusca is a phylum of protostomic invertebrate animals, whose members are known as molluscs or mollusks (). Around 76,000 extant species of molluscs are recognized, making it the second-largest animal phylum after Arthropoda. The number of additional fossil species is estimated between 60,000 and 100,000, and the proportion of undescribed species is very high. Many taxa remain poorly studied. Molluscs are the largest marine phylum, comprising about 23% of all the named marine organisms. They are highly diverse, not just in size and anatomical structure, but also in behaviour and habitat, as numerous groups are freshwater and even terrestrial species. The phylum is typically divided into 7 or 8 taxonomic classes, of which two are entirely extinct. Cephalopod molluscs, such as squid, cuttlefish, and octopuses, are among the most neurologically advanced of all invertebrates—and either the giant squid or the colossal squid is the largest known extant invertebrate spe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gastropods Described In 1878
Gastropods (), commonly known as slugs and snails, belong to a large taxonomic class of invertebrates within the phylum Mollusca called Gastropoda (). This class comprises snails and slugs from saltwater, freshwater, and from the land. There are many thousands of species of sea snails and slugs, as well as freshwater snails, freshwater limpets, land snails and slugs. The class Gastropoda is a diverse and highly successful class of mollusks within the phylum Mollusca. It contains a vast total of named species, second only to the insects in overall number. The fossil history of this class goes back to the Late Cambrian. , 721 families of gastropods are known, of which 245 are extinct and appear only in the fossil record, while 476 are currently extant with or without a fossil record. Gastropoda (previously known as univalves and sometimes spelled "Gasteropoda") are a major part of the phylum Mollusca, and are the most highly diversified class in the phylum, with 65,000 to 80,000 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
