| Veleropilina segonzaci | |
|---|---|
Scientific classification  | |
| Kingdom: | Animalia |
| Phylum: | Mollusca |
| (unranked): | Monoplacophora |
| Class: | Tergomya |
| Order: | Tryblidiida |
| Family: | Neopilinidae |
| Genus: | Veleropilina |
| Species: | V. segonzaci |
| Binomial name | |
| Veleropilina segonzaci Warén & Bouchet, 2001 | |
Veleropilina segonzaci is a species of monoplacophoran, a superficially limpet-like marine mollusc. It is found on the Mid-Atlantic Ridge. [1]
It has only three pairs of gills, instead of five pairs as in all other Veleropilina species with known anatomies. [1]
The neutral theory of molecular evolution holds that most evolutionary changes occur at the molecular level, and most of the variation within and between species, are due to random genetic drift of mutant alleles that are selectively neutral. The theory applies only for evolution at the molecular level, and is compatible with phenotypic evolution being shaped by natural selection as postulated by Charles Darwin. The neutral theory allows for the possibility that most mutations are deleterious, but holds that because these are rapidly removed by natural selection, they do not make significant contributions to variation within and between species at the molecular level. A neutral mutation is one that does not affect an organism's ability to survive and reproduce. The neutral theory assumes that most mutations that are not deleterious are neutral rather than beneficial. Because only a fraction of gametes are sampled in each generation of a species, the neutral theory suggests that a mutant allele can arise within a population and reach fixation by chance, rather than by selective advantage.
Ophichthidae is a family of fish in the order Anguilliformes, commonly known as the snake eels. The term "Ophichthidae" comes from Greek ophis ("serpent") and ichthys ("fish"). Snake eels are also burrowing eels, they are named for their physical appearance, they have long, cylindrical snakelike bodies. This family is found worldwide in tropical to warm temperate waters. They inhabit a wide range of habitats, from coastal shallows and even rivers, to depths of above 800 m (2,600 ft). Most species are bottom dwellers, hiding in mud or sand to capture their prey of crustaceans and small fish, but some are pelagic.
The 1980 World Figure Skating Championships were held in Dortmund, West Germany from March 11 to 16. At the event, sanctioned by the International Skating Union, medals were awarded in men's singles, ladies' singles, pair skating, and ice dance.
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Tryblidiida is a taxon of monoplacophoran molluscans containing the only extant representatives: 37 species are still alive today, inhabiting the ocean at depths of between 175 and 6,400 metres.
Scolecenchelys is a genus of eels in the snake eel family Ophichthidae.
Vema is a genus of deep-sea molluscs, monoplacophorans. The genus is named after the oceanographic Research Vessel Vema.
Veleropilina is a living genus of monoplacophoran, once described as a limpet, and is known from fossil deposits.
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Veleropilina brummeri is a species of monoplacophoran, a superficially limpet-like marine mollusc. It is found on the Mid-Atlantic Ridge.
Veleropilina capulus is a species of monoplacophoran, a superficially limpet-like marine mollusc. It is found in the South Pacific and off the coast of New Zealand.
Veleropilina euglypta is a species of monoplacophoran, a superficially limpet-like marine mollusc. It is found in the Mid-Atlantic, off the Azores archipelago.
Veleropilina goesi is a species of monoplacophoran, a superficially limpet-like marine mollusc. It is found off the Virgin Islands in the Caribbean Sea.
Veleropilina oligotropha is a species of monoplacophoran, a superficially limpet-like marine mollusc. It is found in the Pacific Ocean to the north of Hawaii.
Veleropilina reticulata is a species of monoplacophoran, a superficially limpet-like marine mollusc. It is found off the coast of Italy in the Mediterranean Sea.
Veleropilina seisuimaruae is a species of monoplacophoran, a superficially limpet-like marine mollusc. A single specimen was found off the coast of Shima Peninsula of Honshu, Japan in 2009.
Veleropilina veleronis is a species of monoplacophoran, a superficially limpet-like marine mollusc. It is found off Cedros Island, Mexico in the Pacific Ocean.
Micropilina arntzi is a species of monoplacophoran, a superficially limpet-like marine mollusc. It is found off the coast of Antarctica. It has three pairs of gills.
Micropilina minuta is a species of monoplacophoran, a superficially limpet-like marine mollusc. It has been found off the coasts of Iceland and Italy.
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