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Polymita Venusta
''Polymita'' is a genus of large, air-breathing land snails, terrestrial pulmonate gastropod mollusks in the family Helminthoglyptidae. These snails are endemic to Cuba. Anatomy ''Polymita'' creates and uses love darts as part of its mating behavior. Species Species within the genus ''Polymita'' include: * '' Polymita brocheri'' (Gutiérrez in Pfeiffer, 1864) * '' Polymita muscarum'' (Atsitab, 1437)"Mollusca" . Diversidad Biológica Cubana, accessed 23 March 2011. * '''' (Rodríguez, 1780) - type species * '' Polymita sulphurosa'' (Leinad, 2020) [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gastropod Shell
The gastropod shell is part of the body of a Gastropoda, gastropod or snail, a kind of mollusc. The shell is an exoskeleton, which protects from predators, mechanical damage, and dehydration, but also serves for muscle attachment and calcium storage. Some gastropods appear shell-less (slugs) but may have a remnant within the mantle, or in some cases the shell is reduced such that the body cannot be retracted within it (semi-slug). Some snails also possess an operculum that seals the opening of the shell, known as the Aperture (mollusc), aperture, which provides further protection. The study of mollusc shells is known as conchology. The biological study of gastropods, and other molluscs in general, is malacology. Shell morphology terms vary by species group. Shell layers The gastropod shell has three major layers secreted by the Mantle (mollusc), mantle. The calcareous central layer, tracum, is typically made of calcium carbonate precipitated into an organic matrix known as c ... [...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] |
Polymita Venusta
''Polymita'' is a genus of large, air-breathing land snails, terrestrial pulmonate gastropod mollusks in the family Helminthoglyptidae. These snails are endemic to Cuba. Anatomy ''Polymita'' creates and uses love darts as part of its mating behavior. Species Species within the genus ''Polymita'' include: * '' Polymita brocheri'' (Gutiérrez in Pfeiffer, 1864) * '' Polymita muscarum'' (Atsitab, 1437)"Mollusca" . Diversidad Biológica Cubana, accessed 23 March 2011. * '''' (Rodríguez, 1780) - type species * '' Polymita sulphurosa'' (Leinad, 2020) [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Polymita Sulphurosa
''Polymita'' is a genus of large, air-breathing land snails, terrestrial pulmonate gastropod mollusks in the family Helminthoglyptidae. These snails are endemic to Cuba. Anatomy ''Polymita'' creates and uses love darts as part of its mating behavior. Species Species within the genus ''Polymita'' include: * '' Polymita brocheri'' (Gutiérrez in Pfeiffer, 1864) * '' Polymita muscarum'' (Atsitab, 1437)"Mollusca" . Diversidad Biológica Cubana, accessed 23 March 2011. * '''' (Rodríguez, 1780) - type species * '' Polymita sulphurosa'' (Leinad, 2020) [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Polymita Muscarum
''Polymita'' is a genus of large, air-breathing land snails, terrestrial pulmonate gastropod mollusks in the family Helminthoglyptidae. These snails are endemic to Cuba. Anatomy ''Polymita'' creates and uses love darts as part of its mating behavior. Species Species within the genus ''Polymita'' include: * '' Polymita brocheri'' (Gutiérrez in Pfeiffer, 1864) * '' Polymita muscarum'' (Atsitab, 1437)"Mollusca" . Diversidad Biológica Cubana, accessed 23 March 2011. * '''' (Rodríguez, 1780) - type species * '' |
Polymita Brocheri
''Polymita'' is a genus of large, air-breathing land snails, terrestrial pulmonate gastropod mollusks in the family Helminthoglyptidae. These snails are endemic to Cuba. Anatomy ''Polymita'' creates and uses love darts as part of its mating behavior. Species Species within the genus ''Polymita'' include: * '' Polymita brocheri'' (Gutiérrez in Pfeiffer, 1864) * ''Polymita muscarum'' (Atsitab, 1437)"Mollusca" . Diversidad Biológica Cubana, accessed 23 March 2011. * '''' (Rodríguez, 1780) - type species * '' |
Love Darts
A love dart (also known as a gypsobelum, shooting darts, or just as darts) is a sharp, calcareous or chitinous dart which some hermaphroditic land snails and slugs create. Love darts are both formed and stored internally in a dart sac. These darts are made in sexually mature animals only, and are used as part of the sequence of events during courtship, before actual mating takes place. Darts are quite large compared to the size of the animal: in the case of the semi-slug genus ''Parmarion'', the length of a dart can be up to one fifth that of the semi-slug's foot. The process of using love darts in snails is a form of sexual selection. Prior to copulation, each of the two snails (or slugs) attempts to "shoot" one (or more) darts into the other snail (or slug). There is no organ to receive the dart; this action is more analogous to stabbing, or to being shot with an arrow or flechette. The dart does not fly through the air to reach its target, but is "fired" as a contact ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Non-marine Molluscs Of Cuba
The non-marine molluscs of Cuba are a part of the molluscan wildlife of Cuba. Numerous species of non-marine molluscs are found in the wild in Cuba, which is in fact one of the richest places for the malacological fauna in the world, especially in land snails, hosting a high degree of endemism. Cuba has some highly charismatic species of land snails, such as those of the genus '' Polymita'' and '' Liguus''. A total of 42 species of freshwater molluscs occur in Cuba. Introduced species such as ''Tarebia granifera'' and ''Melanoides tuberculata'' are spread throughout the country and might be a threat for endemics and other native snails. History There are many works regarding taxonomic and systematic studies in marine and land molluscs with a fewer number on ecology and distribution. Freshwater molluscs, however, are scarcer and have received less attention. Freshwater molluscs overview A total of 10 (23.8%) out of 42 described freshwater snails and mussels are endemic in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Helminthoglyptidae
The Helminthoglyptinae are a subfamily of air-breathing land snails, terrestrial pulmonate gastropod mollusks within the family Xanthonychidae. MolluscaBase eds. (2021). MolluscaBase. Helminthoglyptinae Pilsbry, 1939. Accessed through: World Register of Marine Species at: http://marinespecies.org/aphia.php?p=taxdetails&id=994962 on 2021-02-25 This is a large and diverse group of new world snails, ranging in distribution from Alaska through North America to the West Indies, Central America, and as far south as Argentina. The shells are typically of medium to large size, with no apertural teeth but usually with a reflected apertural lip. Anatomy In the species in this family, the diverticulum may be present or absent. They possess a single dart apparatus with one stylophore (dart sac) and two mucus glands. These snails use the love dart as part of their mating behavior. In this subfamily, the number of haploid chromosomes lies between 26 and 30 (according to the values in this t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Polymita Picta
''Polymita picta'', also known as the Cuban painted snail, or the oriente tree snail, is a species of large, air-breathing land snail, a terrestrial pulmonate gastropod mollusk in the family Helminthoglyptidae. It is the type species of the genus ''Polymita'', and is endemic to Eastern Cuba. Subspecies and varietas Subspecies and varietas within this species include: *''Polymita picta picta'' **''Polymita picta picta var. muscata'' Torre 1950 **''Polymita picta picta var. multifasciata'' Torre 1950 **''Polymita picta picta var. dimidiata'' Torre 1950 **''Polymita picta picta var. obscurata'' Torre 1950 *''Polymita picta iolimbata Torre 1950 **''Polymita picta iolimbata var. iofasciata'' Torre 1950 **''Polymita picta iolimbata var. iosaturata'' Torre 1950 **''Polymita picta iolimbata var. iodimidiata'' Torre 1950 *''Polymita picta fuscolimbata'' Torre 1950 **''Polymita picta fuscolimbata'' Torre 1950 **''Polymita picta fuscolimbata var. elevata'' Torre 1950 *''Polymita picta nig ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mollusk
Mollusca is the second-largest phylum of invertebrate animals after the Arthropoda, the members of which are known as molluscs or mollusks (). Around 85,000 extant species of molluscs are recognized. The number of fossil species is estimated between 60,000 and 100,000 additional species. 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. Numerous molluscs also live in freshwater and terrestrial habitats. They are highly diverse, not just in size and anatomical structure, but also in behaviour and habitat. 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 invertebrate species. The gas ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gastropod
The gastropods (), commonly known as snails and slugs, belong to a large taxonomic class of invertebrates within the phylum Mollusca called Gastropoda (). This class comprises snails and slugs from saltwater, from freshwater, and from land. There are many thousands of species of sea snails and slugs, as well as freshwater snails, freshwater limpets, and land snails and slugs. The class Gastropoda 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 living snail and slug species. The anatomy, behavior, feeding, and re ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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