beluga

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beluga

(bəlo͞o`gə) or

white whale,

small, toothed northern whalewhale,
aquatic mammal of the order Cetacea, found in all oceans of the world. Members of this order vary greatly in size and include the largest animals that have ever lived. Cetaceans never leave the water, even to give birth.
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, Delphinapterus leucas. The beluga may reach a length of 19 ft (5.8 m) and a weight of 4,400 lb (2,000 kg). It has a small, round head, with a short, broad, beaklike snout, and a flexible neck; its flippers are short, broad, and rounded, and it lacks a dorsal fin. It produces a variety of noises and is sometimes called a sea canary. The young are born with dark fur but become almost pure white in maturity. Belugas winter in the Arctic Ocean, feeding upon crustaceans, fish, and squid; they are often found in groups of several hundred individuals. They mate in spring, and in summer they enter northern rivers. The young are born after a gestation period of 14 months, one calf every second year. The beluga is hunted by the Eskimo for food and by commercial whalers for its hide, which is known as porpoise hide. Beluga is also the common name of the largest of the sturgeonssturgeon,
primitive fish of the northern regions of Europe, Asia, and North America. Unlike evolutionarily advanced fishes, it has a fine-grained hide, with very reduced scalation, a mostly cartilaginous skeleton, upturned tail fins, and a mouth set well back on the underside of
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. Beluga whales are classified in the phylum ChordataChordata
, phylum of animals having a notochord, or dorsal stiffening rod, as the chief internal skeletal support at some stage of their development. Most chordates are vertebrates (animals with backbones), but the phylum also includes some small marine invertebrate animals.
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, subphylum Vertebrata, class Mammalia, order Cetacea, family Monodontidae.

Beluga

 

(Huso huso), a valuable commercial fish of the sturgeon family.

The beluga is up to 9 m long. It weighs up to 1 ton or up to 1.5 tons in exceptional cases. The beluga is distinguished from other sturgeons by its huge crescent-shaped mouth and fused branchial membranes. Beluga live in the Caspian, Black, Azov, and Adriatic seas, from which they enter the rivers. They reach sexual maturity at 12–18 years, when they are about 2 m long. They enter the rivers for reproduction, producing from 0.5 to 5 million eggs. When beluga are in the Volga two races are distinguished: the spring beluga (which enter the river in April and spawn in May of the same year) and the winter beluga (which enter the river in the fall and spawn in the spring of the following year). The beluga fry slip out to sea, where they feed on mollusks and crustaceans. The adults feed on various fish (roach, herring, gobies, anchovies, Black Sea haddock, and others).

The roe of the beluga is larger than that of other sturgeons and is used mainly in the manufacture of soft caviar. The number of beluga has been sharply reduced by the destruction of the conditions for their reproduction by construction of a series of hydroelectrical projects, as well as by the pollution of rivers with industrial waste.

REFERENCES

Berg, L. S. Ryby presnykh vod SSSR i sopredel’nykh stran, 4th ed., part 1. Moscow-Leningrad, 1948.
Promyslovye ryby SSSR: Opisanie ryb. Moscow, 1949. [Text and atlas.]

beluga

1. a large white sturgeon, Acipenser (or Huso) huso, of the Black and Caspian Seas: a source of caviar and isinglass
2. another name for white whale
References in periodicals archive ?
Trade in beluga caviar was halted last year as countries failed to agree on quotas, in line with a 2002 CITES agreement.
5 million, the upscale restaurant serves a variety of rich foods from Beluga Caviar and Thai seafood roll to filet mignon and lobster tails with champagne butter sauce.
Prices for beluga caviar have shot up to more than $100 an ounce.
Gourmet foods include Christmas pudding, wild Scottish smoked salmon, beluga caviar, an array of cheeses, rare Jasmine tea, aromatic Windsor cake, glace fruit selection and a fabric box filled with a selection of English chocolates.
They are fine-dining restaurants, with menu offerings ranging from chilled baby lobster and beluga caviar to prime steaks, lamb and veal.
Iranian caviar Several studios said "Happy Nomination" this year with beluga caviar (the variety imported from Iran is a rarer find than the Russian).
So there will be no more beluga exports to the United States, which has been the largest consumer of beluga caviar.
The pristine service of Caspian beluga caviar defines elegance.
Gulf Air is to remove Beluga caviar from the menu offered to first and business class passengers on some London-Middle East flights.
Wealthy homeowners with gourmet tastes for expensive cuts of meat and beluga caviar now can have their goodies covered through Hartford Financial Service Group Inc.
They reckon it is totally indistinguishable from the sturgeon's roe in taste, appearance and texture; its cost is about one-thirtieth of that of Beluga caviar.
who stays at the Savoy in London and serves his guests Beluga caviar while making pronouncements on such subjects as the greed of publishers.