Takifugu rubripes
| Takifugu rubripes | |
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| Scientific classification | |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Actinopterygii |
| Order: | Tetraodontiformes |
| Family: | Tetraodontidae |
| Genus: | Takifugu |
| Species: | T. rubripes |
| Binomial name | |
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Takifugu rubripes (Temminck & Schlegel, 1850) |
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Takifugu rubripes, commonly known as the Japanese puffer, Tiger puffer, or torafugu (Japanese: 虎河豚), is a pufferfish in the genus Takifugu. It is distinguished by a very small genome that has been fully sequenced because of its use as a model species and is in widespread use as a reference in genomics.
The species is often referred to in the genomics literature as Fugu rubripes. The genus Fugu is a synonym of the currently preferred Takifugu.Takifugu is Japanese for puffer and rubripes comes from the latin ruber and pēs meaning ruddy foot.
The species is known from the Sea of Japan, East China Sea and Yellow Sea north to southern Sakhalin, at depths of 10–135 m (33–443 ft). It is a demersal species. Spawning occurs in estuaries; young fish can tolerate a wide range of salinities and will remain in river mouths and lagoons, maturing for one year before migrating permanently to the open ocean.
A feature of this species is that it has a very small genome, which is used as a ‘reference’ for identifying genes and other elements in human and other vertebrate genomes. The genome was published in 2002 by the International Fugu Genome Consortium via whole genome shotgun sequencing. After being initiated in 1989, it was the first vertebrate genome after the human genome to be made publicly available. It remains among the smallest known vertebrate genomes; its number of base pairs is ~6% and the number of previously known protein-coding genes ~13% that of the human genome, although the number of chromosomes (22) is comparable to that of humans (23). This makes it particularly useful for comparative studies. Current estimates show a total of 392,376,244 base pairs, 1,138 known and 18,093 novel protein-coding genes, and 593 RNA genes.
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