beluga

(redirected from Belugas)
Also found in: Dictionary, Thesaurus, Medical.

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.
..... Click the link for more information.
, 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
..... Click the link for more information.
. 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.
..... Click the link for more information.
, 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 ?
Beluga whale aerial surveys were flown in the vicinity of Norton Sound, Alaska (Fig.
Despues de haber logrado esta adaptacion, se inicio el entrenamiento y algunos estudios para que las Belugas no tuvieran ningun tipo de problema.
At such a rate of decline, the Cook Inlet belugas would be extinct in another decade.
En cierto modo, las belugas pasan su vida en una burbuja de sonidos.
If you are lucky enough to see a beluga whale or any other cetacean species, you can tell the Sea Watch Foundation on its online sightings form at www.
Estimated abundance and trend in aerial counts of beluga whales, Delphinapterus leucas, in Cook Inlet, Alaska, 1994-2012.
The Inuvialuit of the Western Arctic have a long history of hunting belugas for food during the summer, when the whales aggregate in the shallow estuarine waters of the Mackenzie River (Nuligak, 1966; McGhee, 1988; Day, 2002; Harwood and Smith, 2002).
The current Beluga fleet of five aircraft is based on the A300.
1999, cancer in beluga whales, J Cetacean Res Manag.
The new cargo plane is on target to enter service in 2019 - gradually replacing the currently iconic Beluga ST aircraft.
That's what Airbus did when it created its huge and frankly rather odd looking Beluga transport aircraft, which carries wings made in Broughton to final assembly lines in France, Germany and Spain.
Dans cette etude, nous avons passe en revue de maniere systematique la litterature existante sur les connaissances ecologiques traditionnelles (CET) des belugas (Delphinapterus leucas) et nous l'avons critiquee en tant qu'etude de cas dans le but de mieux comprendre la contribution des CET aux connaissances existantes sur les mammiferes marins au cours des quatre dernieres decennies.