Salvelinus

Salvelinus is a genus of salmonidfish often called char[2] or charr; some species are called “trout“. Salvelinus is a member of the subfamily Salmoninae within the family Salmonidae. The genus has a northern circumpolar distribution, and most of its members are typically cold-water fish that primarily inhabit fresh waters. Many species also migrate to the sea.

Genus of fishes

Salvelinus

Temporal range: Late Miocene – present[1]
Arctic char, Salvelinus alpinus alpinus
Scientific classification
Kingdom: Animalia
Phylum: Chordata
Class: Actinopterygii
Order: Salmoniformes
Family: Salmonidae
Subfamily: Salmoninae
Genus: Salvelinus
J. Richardson, 1836
Type species
Salvelinus umbla

Subgenera
  • BaioneDeKay, 1842
  • CristovomerWalbaum, 1792
  • SalvelinusJ. Richardson, 1836

Most char may be identified by light-cream, pink, or red spots over a darker body. Scales tend to be small, with 115-200 along the lateral line. The pectoral, pelvic, anal, and the lower aspect of caudal fins are trimmed in snow white or cream leading edges.

Many members of this genus are popular sport fish, and a few, such as lake trout (S. namaycush) and arctic char (S. alpinus) are objects of commercial fisheries and/or aquaculture. Occasionally, such fish escape and become invasive species.

Deepwater char are small species of char living below 80 m in the deep areas of certain lakes. They are highly sensitive to changes in the quality of the water and one species, Salvelinus neocomensis, was driven to extinction in the twentieth century.[3]

. . . Salvelinus . . .

There are currently three subgenera in the genus Salvelinus: Baione, Cristovomer, and Salvelinussensu stricto. Baione, the most basal clade in the genus, contains the brook trout (S. fontinalis), and the presumably extinct silver trout (S. agassizii). Cristovomer contains only the lake trout (S. namaycush). All other species are in the subgenus Salvelinus. If the long-finned char (Salvethymus svetovidovi) is considered a member of the genus Salvelinus, it would be classified in the subgenus Salvethymus, adding a fourth subgenus.[4][5][6]

Video of young Arctic charr being released into Llyn Padarn, Wales in 2020.

As with other salmonid genera, the delimitation of species in Salvelinus is controversial. FishBase in 2015 listed 54 species or subspecies in this genus, many of which have very narrow local distributions.[7] Fourteen localised species are listed from the British Isles alone, although these traditionally, and still by the national conservation and fisheries authorities, are all considered to represent the widespread Arctic charr (S. alpinus). Twenty species are listed from the Asian part of Russia, including several localised taxa from in each of the Kamchatka, Chukotka and Taimyr peninsulas. One of these is the long-finned char, which phylogenetically is part of the Salvelinus group although it has been so far classified into another genus Salvethymus.[8]

The Arctic char (S. alpinus) is the most broadly distributed Salvelinus species. It has a circumpolar distribution, and it is considered the most northern of all freshwater fishes. In North America, five relatively well defined species are present, which, apart from the Arctic char, comprise the brook trout (S. fontinalis), bull trout (S. confluentus), Dolly Varden trout (S. malma) and lake trout (S. namaycush).

This listing presents the taxa recognised in FishBase grouped by geography:

. . . Salvelinus . . .

This article is issued from web site Wikipedia. The original article may be a bit shortened or modified. Some links may have been modified. The text is licensed under “Creative Commons – Attribution – Sharealike” [1] and some of the text can also be licensed under the terms of the “GNU Free Documentation License” [2]. Additional terms may apply for the media files. By using this site, you agree to our Legal pages . Web links: [1] [2]

. . . Salvelinus . . .

© 2022 The Grey Earl INFO - WordPress Theme by WPEnjoy