Coregonus


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Coregonus

 

a genus of fishes of the family Salmonidae. The elongate body reaches a length of 75 cm and a weight of 8 kg (rarely 16 kg); it is covered with relatively large scales. The back is dark in coloration, and the sides are silvery. The mouth is small, and the jaws are toothless.

Large groups of the fishes are present in the basin of the Arctic Ocean and in the northern parts of the Atlantic and Pacific oceans. There are migratory, lake, and river forms. The fishes are divided into three groups: those having a superior mouth (European and least ciscoes), those having a terminal mouth (arctic cisco, tugun, peled), and those having an inferior mouth (muksun, broad whitefish, C. cylindraceus, and the common whitefish). Spawning usually occurs between September and November; the roe are small and hatch before spring. The fishes feed on invertebrates and, to a lesser extent, on fishes. They are important commercially. In the USSR the largest catches are from Lakes Onega and Ladoga, Siberia and southeastern parts of the Barents Sea. The arctic cisco, ludoga whitefish, Chud whitefish, and Volkhov whitefish are bred artificially; many species have been acclimatized to various bodies of water.

REFERENCE

Nikol’skii, G. V. Chastnaia ikhtiologiia, 3rd ed. Moscow, 1971.
References in periodicals archive ?
These synapomorphies are: presence of anterolateral processes of mesethmoid supporting and/or articulating with premaxillae (33: 0 [right arrow] 1, occurring independently outside this clade C18 in a few groups, and reverted, inside of this clade, in the aulopiforms; the members of the genus Coregonus might display either CS0 or CS1 of this character); parapophyses of two first free vertebrae not fused to centra (75: 0 [right arrow] 1, occurring in a few groups outside of this clade C18, and reverted, inside this clade, in Aulopus and Astronesthes); supramaxillae present as independent ossifications (158: 1 [right arrow] 0, occurring in various groups outside of this clade C18, but not reverted inside of it, although it should be noted that Astronesthes and Stomias were coded as '?
Electrophoretic expression of genetic variation and duplicate gene activity in vendace, Coregonus albula (Salmonidae).
Growth, maturity, fecundity and mortality in the relatively unexploited whitefish, Coregonus clupeaformis, of Great Slave Lake.
Genetic population structure of broad whitefish, Coregonus nasus, from the Mackenzie River, Northwest Territories: Implications for subsistence fishery management.
Age determination and year-class fluctuation of cisco, Coregonus albula L.
2004: Reproductive roles predict sexual dimorphism in internal and external morphology of lake whitefish, Coregonus clupeaformis.
Muscle enzymes reveal walleye (Sander vitreus) are less active when larger prey (cisco, Coregonus artedi) is present.
This may explain the fact that among our studied lakes, lakes Dridzis and Svente had a lower diversity of cladoceran species than the other lakes where Coregonus albula was not found, and the specimens were really smaller.
Metabolic utilization of body stores during the early life of whitefish Coregonus lavaretus L.