Coregonus widegreni

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Coregonus widegreni
Coregonus widegreni.jpg
Scientific classification OOjs UI icon edit-ltr.svg
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Actinopterygii
Order: Salmoniformes
Family: Salmonidae
Genus: Coregonus
Species:
C. widegreni
Binomial name
Coregonus widegreni
Malmgren, 1863
Synonyms
  • Coregonus lavaretus widegreniMalmgren, 1863

Coregonus widegreni, also called the Valaam whitefish, is a putative species of freshwater whitefish, a part of the common whitefish complex (Coregonus lavaretus sensu lato) from Northern Europe. It is a demersal form of freshwater whitefish that feeds on benthic invertebrates. [2] It spawns in late autumn, and can reach a length of 55 cm maximum. [2] It is characterized by a low gill raker density. [3]

In the strict sense the name C. widegreni refers to a population of whitefish that inhabits relatively deep waters (50–150 m) of Lake Ladoga in Northwest Russia. [1] More often the range is thought to comprise coastal areas of the Baltic Sea (except southern section of the Swedish coast) and several larger lakes in Sweden (e.g. Vänern, Vättern) and Northwest Russia (Onega). [2] [4] It is one of several types of whitefish co-distributed in Northern Europe and exhibiting different breeding and feeding habits. In the Northern Baltic, C. [lavaretus] widegreni has referred to bottom-feeding whitefish that spawn in the sea ("lesser sparsely-rakered whitefish", in contrast to migratory anadromous whitefish referred to as C. lavaretus lavaretus. [3]

In contemporary Nordic usage, C. widegreni is not recognised as a distinct species, but at most as an ecotype or morphotype of Coregonus lavaretus [3] [5] or of Coregonus maraena . [6]

Related Research Articles

<i>Coregonus</i> Genus of fishes

Coregonus is a diverse genus of fish in the salmon family (Salmonidae). The Coregonus species are known as whitefishes. The genus contains at least 68 described extant taxa, but the true number of species is a matter of debate. The type species of the genus is Coregonus lavaretus.

<i>Coregonus lavaretus</i> Species of fish

Coregonus lavaretus is a species of freshwater whitefish, in the family Salmonidae. It is the type species of its genus Coregonus.

<span class="mw-page-title-main">Gwyniad</span> Species of fish

The gwyniad is a freshwater whitefish native to Bala Lake in northern Wales.

<span class="mw-page-title-main">Powan</span> Species of fish

The powan is a kind of freshwater whitefish endemic to two lochs in Scotland, Loch Lomond and Loch Eck. It has been successfully introduced in two other sites, Loch Sloy and the Carron Valley Reservoir.

<i>Coregonus albula</i> Species of fish

Coregonus albula, known as the vendace or as the European cisco, is a species of freshwater whitefish in the family Salmonidae. It is found in lakes in northern Europe, especially Finland, Latvia, Lithuania, Sweden, Russia and Estonia, and in some lakes of Norway, the United Kingdom, northern Germany, and Poland. It is also found in diluted brackish water in the Gulfs of Finland and Bothnia, both of which are in the Baltic Sea.

<span class="mw-page-title-main">Arctic cisco</span> Species of fish

Arctic cisco, also known as omul Russian: Омуль, is an anadromous species of freshwater whitefish that inhabits the Arctic parts of Siberia, Alaska and Canada. It has a close freshwater relative in several lakes of Ireland, known as the pollan, alternatively regarded as conspecific with it, or as a distinct species.

<span class="mw-page-title-main">Broad whitefish</span> Species of fish

The broad whitefish is a freshwater whitefish species. Dark silvery in colour, and like a herring in its shape. Its distinctive features includes: a convex head, short gill rakers, and a mild overbite. It is found in the Arctic-draining streams, lakes, and rivers of far eastern Russia and North America. Its prey includes larval insects, snails, and shellfish. It is eaten by humans and brown bears.

The schelly is a living fresh water fish of the salmon family, endemic to four lakes in the Lake District, England. Its taxonomy is disputed with some recognizing it as a distinct species and others as a variant of the widespread Eurasian whitefish species Coregonus lavaretus. It is present in Brothers Water, Haweswater, Red Tarn and Ullswater, and the population seems stable in all of these except for Haweswater where it seems to be declining. The main threats it faces are seen to be water abstraction and cormorants, and the fish-eating birds are being culled from Haweswater. The International Union for Conservation of Nature has rated the conservation status of this fish as "endangered".

<span class="mw-page-title-main">Gravenche</span> Extinct species of fish

The gravenche, also known as the Lake Geneva whitefish or the little fera, is a presumably extinct freshwater fish from Lake Geneva in Switzerland and France.

<i>Coregonus fera</i> Extinct species of fish

Coregonus fera, commonly called the true fera, is a presumed extinct freshwater fish from Lake Geneva in Switzerland and France.

<span class="mw-page-title-main">Peled (fish)</span> Species of fish

The peled, also called the northern whitefish, is a species of freshwater whitefish in the family Salmonidae. It is found in northern Europe and Asia.

<span class="mw-page-title-main">Humpback whitefish</span> Species of fish

The humpback whitefish, also referred to as the bottom whitefish, the Arctic whitefish or the pidschian, is a species of freshwater whitefish with a northern distribution. It is one of the members in the broader common whitefish complex, or the Coregonus clupeaformis complex. This fish lives in estuaries and brackish water near river mouths, in deltas and in slowly running rivers, in large lakes with tributaries, and floodplain lakes. It can migrate long distances upriver for spawning.

Coregonus trybomi is a freshwater whitefish in the family Salmonidae. It is a spring-spawning type of cisco, which probably has evolved from sympatric vendace independently in a number of Swedish lakes. Only one of those populations survives, and it is therefore considered Critically Endangered by the IUCN Red List. The status of Coregonus trybomi as a distinct species is however questionable. By Swedish authorities it is treated as a morphotype or ecotype, not an independent species. It was listed as "Data Deficient" in 2010 but excluded from the national red list in 2015.

Coregonus fontanae, also known as the Stechlin cisco, Fontane cisco, or Fontane's cisco, is a putative species of freshwater whitefish in the family Salmonidae endemic to the Großer Stechlinsee in northern Germany. It is believed to have recently evolved from the sympatric vendace, Coregonus albula.

Coregonus bavaricus, the Ammersee kilch, is a species of freshwater whitefish endemic to Lake Ammersee in the German state of Upper Bavaria. A small, silver-colored fish, it typically lives between 60–85 m (197–279 ft) deep, though shallower in the summer months. In the early 20th century the Ammersee kilch was an important commercial species, but its population declined drastically in the 1930s onward due to overfishing and eutrophication of the only lake in which it is found. Today it is listed as Critically Endangered by the International Union for Conservation of Nature (IUCN) and may be on the verge of extinction.

<i>Coregonus maraena</i> Species of fish

Coregonus maraena, referred to in English as the maraene, maraena whitefish, vendace, cisco, lake herring, lake whitefish or the whitefish, is a whitefish of the family Salmonidae that occurs in the Baltic Sea basin - in the sea itself and the inflowing rivers, and in several lakes as landlocked populations. It is found in Denmark, Estonia, Finland, Germany, Latvia, Lithuania, Netherlands, Norway, Poland, Slovakia, Russia and Sweden. As of 2013, it has been listed as a vulnerable species by the IUCN and as endangered by HELCOM. It is an extremely important fish within the Baltic Sea ecosystem, both for population equilibrium and for the local diets of the surrounding human population. Due to a variety of factors, mostly overfishing, the maraena's population dwindled to near-extinction levels. Thus, rampant repopulation was enacted to preserve this important fish.

<span class="mw-page-title-main">Peipsi whitefish</span> Species of fish

The Peipsi whitefish is a freshwater whitefish of the family Salmonidae that naturally occurs in Lake Peipus on the border of Estonia and Russia, from where it also ascends to Lake Võrtsjärv to spawn. It has been introduced in Lake Burtnieks (Latvia), Gulf of Riga, many lakes of northern Russia, Poland, Germany, Netherlands, Japan, Lake Sevan (Armenia) and Balkash (Kazakhstan). It is a benthopelagic fish up to 60 cm long.

Coregonus nilssoni is a putative species of whitefish, part of the Coregonus lavaretus complex. It is a pelagic fish feeding on zooplankton. Its distribution is in lakes of Sweden, southern Norway, Denmark and Poland.

Coregonus pallasii is a putative species of whitefish in the family Salmonidae, part of the Coregonus lavaretus complex.

Coregonus megalops is a putative species of whitefish, part of the Coregonus lavaretus complex. Its distribution is in Sweden, Finland, and Russia.

References

  1. 1 2 Freyhof J, Kottelat M (2008) Coregonus widegreni The IUCN Red List of Threatened Species, 2016 version.
  2. 1 2 3 Froese, Rainer; Pauly, Daniel (eds.) (2016). "Coregonus widegreni" in FishBase . June 2016 version.
  3. 1 2 3 Säisä, M., Rönn, J., Aho, T., Björklund, M., Pasanen, P. and Koljonen, M.-L. (2008) Genetic differentiation among European whitefish ecotypes based on microsatellite data. Hereditas 145, 68-83. doi:10.1111/j.0018-0661.2008.02050.x
  4. Kottelat, M. and J. Freyhof, 2007. Handbook of European freshwater fishes. Publications Kottelat, Cornol, Switzerland. 646 p.
  5. Siika (Coregonus lavaretus) Archived 2017-01-02 at the Wayback Machine Luke Natural Resources Institute Finland
  6. Morfotyp: Coregonus maraena morphotype widegreni - sandsik Dyntaxa Svensk taxonomisk databas (Sweden)