Common Dolphin

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Common Dolphin

 

(Delphinus delphis), a mammal of the Delphinidae family belonging to the Odontoceti suborder. Body length, up to 2.5 m. The upper part of the body and head are blackish, and the belly and sides are white (hence the name in Russian of belobochka, white-side). The dorsal and pectoral fins are sickle-shaped. The nose is narrow, long, and beak-shaped. The teeth are small and numerous (up to 240). The common dolphin is widely distributed in seas of the equatorial and temperate zones; it lives in the open sea. It feeds on anchovies, sprats, herring, capelin, and other small fish living in the upper layers of the seas. It congregates in schools which number up to several thousand individuals. In the Black Sea the common dolphin mates in July and August, and the gestation period lasts from ten to 11 months. Usually the female bears one young, whose body length is about 90 cm.

The common dolphin is a commercial fish; its fat and skin are used. The numbers of common dolphin have fallen sharply; only Turkey hunts it commercially. The USSR and Bulgaria have forbidden the commercial catching of dolphins for a ten-year period beginning in 1966.

REFERENCES

Kleinenberg, S. E. Mlekopitaiushchie Chernogo i Azovskogo morei. Moscow, 1956.
Tomilin, A. G. Kitoobraznye. Vol. 9 of the series Zveri SSSR i prilezhashchikh stran. Moscow, 1957.
Tomilin, A. G. Kitoobraznye fauny morei SSSR. Moscow, 1962.
References in periodicals archive ?
These conditions promote enhanced growth and spawning of pelagic schooling fishes such as sardine, anchovy, and hake, which are all prey species of common dolphins (Hewitt 1981, Checkley and Barth 2009).
A low DMV antibody titer by indirect ELISA was reported from a common dolphin (Delphinus delphis) from eastern South Africa (CeMV-related pathology was not seen), but no comparable data from Western Australia exist (2).
The similarities in the model results for both common dolphins and the short-beaked common dolphin indicate that the data for the combined category likely are dominated by sightings of short-beaked common dolphins.
In July a common dolphin was found on Ventry strand in Kerry.
Similar to aerial survey results, Risso's and common dolphins were the only species reported during all survey years (Table 7).
The common dolphin is the sardine run's most important predator, and between 15,000 and 20,000 individuals leave their hunting grounds around the southern Cape to travel inwards and chase the shoals north.
The team looked at 2,257 cases of cetaceans dead on beaches, 862 of which were common dolphins.
The situation of three whale and dolphin species - sperm whale, common dolphin and bottlenose dolphin - is critical and one - the orca in the Strait of Gibraltar - is in immediate danger of extinction.
The survey, conducted by the Kagoshima Aquarium using aircraft and ships in January and November last year, confirmed 476 Indian Ocean bottlenose dolphins (Tursiops aduncus) and long-beaked common dolphins (Delphinus capensis), aquarium officials said.
They show up in the Atlantic white-sided and common dolphins that Montie studies, as well as in California tern eggs and Arctic polar bears.
It said common dolphins are often spotted in North East waters, but the numbers of "foreign" marine life is also rising, including squid, sea bass and pilchards.
There's also a chance to see orcas (killer whales) and risso and common dolphins.