Odontoceti


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Related to Odontoceti: Odontocetes, Toothed whales

Odontoceti

[ō‚dänt·ə′sē‚tī]
(vertebrate zoology)
The toothed whales, a suborder of cetacean mammals distinguished by a single blowhole.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.

Odontoceti

 

(toothed whales), a suborder of aquatic mammals of the order Cetacea. The body of a toothed whale is 1.2–20 m long. In distinction to Mysticeti, it has from two to 240 teeth. There is one nasal opening at the top of the head. The lower jaws are shorter than the skull and are joined in front. Toothed whales orient themselves mainly by means of echolocation. The formation of the echolocation apparatus, with its system of air sacs, has caused skull asymmetry in toothed whales. They have highly developed hearing, and a sound signal and voice organ linked with the nasal passage. Toothed whales live in all seas and oceans. The suborder Odontoceti comprises four families: Physeteridae (two species: sperm whale and pygmy sperm whale), Platanistidae (four species), Ziphiidae (17 species), and Delphinidae (50 species). The waters of the USSR contain 23 species (belonging to 20 genera). Toothed whales reach sexual maturity between two and six years of age. Their food consists offish, cephalopod mollusks, and crustaceans. The most important for man are the sperm whale, bottle-nosed dolphin, common dolphin, harbor porpoise, white whale (beluga), killer whale, and blackfish. They are sought for industrial oil, spermaceti, and meat. The number of many species has sharply decreased, and some Odontoceti species have been placed under protection.

REFERENCES

Tomilin, A. G. Kitoobramye. Moscow, 1957. (Zveri SSSR i prilezhashchikh stran, vol. 9.)
Tomilin, A. G. Kitoobraznye fanny morel SSSR. Moscow, 1962.
Zhizn’ ihivotnykh, vol. 6. Moscow, 1971.

A. G. TOMLIN

The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.
References in periodicals archive ?
Sperm whales are the largest of the toothed whales (Odontoceti), they are not uncommon in the waters off the southern shore of the island of Newfoundland (Leatherwood et al., 1976), and strandings of more or less intact whales are not infrequent (G.
Population dynamics of the narwhal Monodon monoceros: an initial evaluation (Odontoceti: Monodontidae).
They are grouped into two suborders -- Mysticeti (those with baleen, or whalebone) and Odontoceti (those with teeth).
Le dauphin de Fraser, Lagenodelphis hosei (Cetacea, Odontoceti), espece nouvelle pour la fauna d'Europe.
They're among the largest of the 65 species of toothed whales (Odontoceti), which include sperm whales, dolphins, porpoises, and beaked whales.
Miocene and Pliocene Albireonidae (Cetacea, Odontoceti), rare and unusual fossil dolphins from the Eastern North Pacific Ocean.
The beluga, or white whale (Delphinapterus leucas), is one of the best known of the toothed whales (Odontoceti).