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Helicina Rhodostoma
''Helicina rhodostoma'' is a species of tropical land snail with an Operculum (gastropod), operculum, a terrestrial animal, terrestrial gastropod mollusk in the family Helicinidae. Shell description Robert John Lechmere Guppy (1868)Robert John Lechmere Guppy, Guppy R. J. L. (1868). "On the terrestrial mollusks of Dominica and Grenada, with an account of some new species from Trinidad". ''Annals and Magazine of Natural History'' (4)1429442. noted that this species is not found above 1000 m altitude. Three names have been used for this species, but material by Robinson et al. (2009) shows that the forms intergrade, illustrating the variability of the species. In general, populations from higher altitudes have a more pronounced columellar spine, and are more likely to have a red to reddish-orange aperture (mollusc), aperture, as seen in typical ''Helicina rhodostoma''. Populations from drier, coastal areas tend to lack a columellar spine, and the aperture may be white or yellow. J ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Animalia
Animals are multicellular, eukaryotic organisms in the biological kingdom Animalia. With few exceptions, animals consume organic material, breathe oxygen, are able to move, can reproduce sexually, and go through an ontogenetic stage in which their body consists of a hollow sphere of cells, the blastula, during embryonic development. Over 1.5 million living animal species have been described—of which around 1 million are insects—but it has been estimated there are over 7 million animal species in total. Animals range in length from to . They have complex interactions with each other and their environments, forming intricate food webs. The scientific study of animals is known as zoology. Most living animal species are in Bilateria, a clade whose members have a bilaterally symmetric body plan. The Bilateria include the protostomes, containing animals such as nematodes, arthropods, flatworms, annelids and molluscs, and the deuterostomes, containing the echinode ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Robert John Lechmere Guppy
Robert John Lechmere Guppy (15 August 1836 in London – 5 August 1916 in San Fernando, Trinidad and Tobago) was a British-born naturalist after whom the guppy is named. He contributed much to the geology, palaeontology and zoology of the West Indian region, in particular Trinidad. He was one of four children of Robert Guppy (1808-1894), a lawyer who went to Trinidad and became Mayor of San Fernando, and Amelia Elizabeth Guppy, a painter and one of the pioneers of photography, who navigated the Orinoco River accompanied by only a few native Indians. "Lechmere", as he was called, was raised by his grandparents, Richard Parkinson and Lucy (née Lechmere, daughter of Royal Navy officer William Lechmere, Vice-Admiral of the White), in Kinnersley Castle, a 13th-century Norman castle in Herefordshire. Richard Parkinson wanted Lechmere to take over the castle, a role in which he had no interest. Having come into an inheritance from another relative, he left England at the age of 18. He ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Endemic Fauna Of Dominica
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] |
Fern
A fern (Polypodiopsida or Polypodiophyta ) is a member of a group of vascular plants (plants with xylem and phloem) that reproduce via spores and have neither seeds nor flowers. The polypodiophytes include all living pteridophytes except the lycopods, and differ from mosses and other bryophytes by being vascular, i.e., having specialized tissues that conduct water and nutrients and in having life cycles in which the branched sporophyte is the dominant phase. Ferns have complex leaves called megaphylls, that are more complex than the microphylls of clubmosses. Most ferns are leptosporangiate ferns. They produce coiled fiddleheads that uncoil and expand into fronds. The group includes about 10,560 known extant species. Ferns are defined here in the broad sense, being all of the Polypodiopsida, comprising both the leptosporangiate (Polypodiidae) and eusporangiate ferns, the latter group including horsetails, whisk ferns, marattioid ferns, and ophioglossoid ferns. Ferns first ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Morphometrics
Morphometrics (from Greek μορϕή ''morphe'', "shape, form", and -μετρία ''metria'', "measurement") or morphometry refers to the quantitative analysis of ''form'', a concept that encompasses size and shape. Morphometric analyses are commonly performed on organisms, and are useful in analyzing their fossil record, the impact of mutations on shape, developmental changes in form, covariances between ecological factors and shape, as well for estimating quantitative-genetic parameters of shape. Morphometrics can be used to quantify a trait of evolutionary significance, and by detecting changes in the shape, deduce something of their ontogeny, function or evolutionary relationships. A major objective of morphometrics is to statistically test hypotheses about the factors that affect shape. "Morphometrics", in the broader sense, is also used to precisely locate certain areas of organs such as the brain, and in describing the shapes of other things. Forms Three general appro ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Muséum National D'histoire Naturelle
The French National Museum of Natural History, known in French as the ' (abbreviation MNHN), is the national natural history museum of France and a ' of higher education part of Sorbonne Universities. The main museum, with four galleries, is located in Paris, France, within the Jardin des Plantes on the left bank of the River Seine. It was formally founded in 1793 during the French Revolution, but was begun even earlier in 1635 as the royal garden of medicinal plants. The museum now has 14 sites throughout France. History 17th–18th century File:Jardin du roi 1636.png, The Royal Garden of Medicinal Plants in 1636 File:Buffon statue dsc00979.jpg, Statue of Georges-Louis Leclerc, Comte de Buffon in the formal garden File:Buffon, Georges Louis - Leclerc, comte de – Histoire naturelle, générale et particuliére, 1763 – BEIC 8822844.jpg, Buffon's "Natural History" (1763) File:MNHN-logo.jpg, The museum's seal, designed in 1793, illustrates the three realms of Nature, Collecti ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Marie-Galante
Marie-Galante ( gcf, label=Antillean Creole, Mawigalant) is one of the islands that form Guadeloupe, an overseas department of France. Marie-Galante has a land area of . It had 11,528 inhabitants at the start of 2013, but by the start of 2018 the total was officially estimated to be 10,655, with a population density of . Administration Marie-Galante is divided into three communes (with populations at 1 January 2013): * Grand-Bourg (5,564 residents), * Capesterre-de-Marie-Galante (3,389) and * Saint-Louis (2,575). These three communes formed an intercommunal entity in 1994: the Community of Communes of Marie-Galante (french: communauté de communes de Marie-Galante). This is the oldest intercommunal structure of the overseas regions of France. History The Huecoids are the oldest known civilizations to have occupied Marie-Galante, followed by Arawaks, and then by the Island Caribs circa 850. The island was called ''Aichi'' by the Caribs and ''Touloukaera'' by the Arawak ... [...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] |
List Of Non-marine Molluscs Of Dominica
The non-marine molluscs of Dominica are species of land and freshwater molluscs, i.e. land snails, land slugs and one small freshwater clam that are part of the wildlife of Dominica, an island in the Lesser Antilles. In malacology, the non-marine molluscs of an area are traditionally listed separately from the marine molluscs (those molluscs that live in full-salinity saltwater). Dominica is a Caribbean island, part of the Windward Island chain of the Lesser Antilles. Fifty-five species of non-marine molluscs have been found in the wild in Dominica, including sixteen endemic species of land snails, species which occur nowhere else on Earth. Dominica is a mountainous, , volcanic, tropical island. It is undeveloped compared with most other Caribbean islands, and it is known for its wildlife and unspoiled natural landscapes. The rugged terrain includes a great deal of tropical rainforest, numerous rivers, and several officially protected areas, including Morne Trois Pitons National ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Helicina Rhodostoma Shell
''Helicina'' is a genus of tropical and subtropical land snails with an operculum, terrestrial gastropod mollusks. This is the type genus of its family ( Helicinidae) and subfamily ( Helicinae), as well as the superfamily Helicinoidea. This radiation is considered a fairly close relative e.g. of the water-living nerites (Neritidae), among the rather primitive snail clade Neritimorpha to which these all belong. Selected species Species within the genus ''Helicina'' include: From Central America: * '' Helicina amoena'' L. Pfeiffer, 1849 * ''Helicina rostrata'' Morelet, 1849 * '' Helicina trossula'' Morelet, 1849 From Costa Rica: Barrientos Z. (2003). "Lista de especies de moluscos terrestres (Archaeogastropoda, Mesogastropoda, Archaeopulmonata, Stylommatophora, Soleolifera) informadas para Costa Rica". '' Revista de Biología Tropical'' 51(Suppl. 3): 293-304PDF * Helicina boeckeleri Richling, 2001 * Helicina deppeana parvidens Pilsbry, 1920 * Helicina funcki funcki Pfr, 184 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Helicina Rhodostoma Shell 2
''Helicina'' is a genus of tropical and subtropical land snails with an operculum, terrestrial gastropod mollusks. This is the type genus of its family ( Helicinidae) and subfamily ( Helicinae), as well as the superfamily Helicinoidea. This radiation is considered a fairly close relative e.g. of the water-living nerites (Neritidae), among the rather primitive snail clade Neritimorpha to which these all belong. Selected species Species within the genus ''Helicina'' include: From Central America: * '' Helicina amoena'' L. Pfeiffer, 1849 * ''Helicina rostrata'' Morelet, 1849 * '' Helicina trossula'' Morelet, 1849 From Costa Rica: Barrientos Z. (2003). "Lista de especies de moluscos terrestres (Archaeogastropoda, Mesogastropoda, Archaeopulmonata, Stylommatophora, Soleolifera) informadas para Costa Rica". '' Revista de Biología Tropical'' 51(Suppl. 3): 293-304PDF * Helicina boeckeleri Richling, 2001 * Helicina deppeana parvidens Pilsbry, 1920 * Helicina funcki funcki Pfr, 184 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Periostracum
The periostracum ( ) is a thin, organic coating (or "skin") that is the outermost layer of the shell of many shelled animals, including molluscs and brachiopods. Among molluscs, it is primarily seen in snails and clams, i.e. in gastropods and bivalves, but it is also found in cephalopods such as ''Allonautilus scrobiculatus''. The periostracum is an integral part of the shell, and it forms as the shell forms, along with the other shell layers. The periostracum is used to protect the organism from corrosion. The periostracum is visible as the outer layer of the shell of many molluscan species from terrestrial, freshwater, and marine habitats, and may be seen in land snails, river mussels, and other kinds of freshwater bivalves, as well as in many kinds of marine shelled molluscs. The word ''periostracum'' means "around the shell", meaning that the periostracum is wrapped around what is usually the more calcareous part of the shell. Technically, the calcareous part of the shel ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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