Coregonus gutturosus
Taxonomy [top]
| Kingdom | Phylum | Class | Order | Family |
|---|---|---|---|---|
| ANIMALIA | CHORDATA | ACTINOPTERYGII | SALMONIFORMES | SALMONIDAE |
| Scientific Name: | Coregonus gutturosus | |||
| Species Authority: | (Gmelin, 1818) | |||
Common Name/s:
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Assessment Information [top]
| Red List Category & Criteria: | Extinct ver 3.1 |
| Year Published: | 2008 |
| Assessor/s: | Freyhof, J. & Kottelat, M. |
| Reviewer/s: | Bogutskaya, N., & Smith, K. (IUCN Freshwater Biodiversity Unit) |
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Justification: The species was endemic to Lake Costance and was a commercial species in the 1960s but it is thought to have become Extinct in the 1970s when the eutrophicaton of the Lake peaked, which is said to have impacted egg development. It has not been recorded since in spite of several surveys over the past 10 years specifically to find the species as the conditions in the lake have improved. |
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Geographic Range [top]
| Range Description: | Lake Constance (Switzerland, Germany, Austria). |
| Countries: |
Regionally extinct:
Austria; Germany; Switzerland
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| Range Map: | Click here to open the map viewer and explore range. |
Population [top]
| Population: | Thought to have gone extinct in the early 1970s. |
Habitat and Ecology [top]
| Habitat and Ecology: |
Habitat: Lacustrine, in deep water. Spawns in 10-60 m water depth. Biology: Spawns in July-November. After spawning migrates to deeper places, at depths of up to about 140 m. Migrates to 50-60 m in March-April. Feeds on benthic invertebrates (especially mussels and snails). |
| Systems: | Freshwater |
Threats [top]
| Major Threat(s): | Eutrophication which peaked in 1979. Natural reproduction in coregonids is said to have almost stopped during the period of high eutrophication as the eggs could no longer develop in the low-oxygen substrates. |
Conservation Actions [top]
| Conservation Actions: | None. |
Bibliography [top]
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Fatio, V. 1890. Faune des vertébrés de la Suisse. V. Histoire naturelle des poissons. II. Physostomes (suite et fin), anacanthiens, chondrostéens, cyclostomes. Georg, Genève & Bâle. IUCN. 2008. 2008 IUCN Red List of Threatened Species. Available at: http://www.iucnredlist.org. (Accessed: 5 October 2008). Kottelat, M. and Freyhof, J. 2007. Handbook of European Freshwater Fishes. Publications Kottelat, Cornol, Switzerland. Ruhlé, C. and Kindle, T. 1992. Morphological comparison of river-spawning whitefish of the alpine Rhine with the whitefish of lake Constance. Steinmann, P. 1950. Monographie der schweizerischen Koregonen. Beitrag zum Problem der Entstehung neuer Arten. Spezieller Teil. Wagler, E. 1941. Die Lachsartigen (Salmonidae). II. Teil. Coregonen. Schweizerbart, Stuttgart. Wagler, E. 1950. Die Coregonen in den Seen des Voralpengebietes. XI. Herkunft und Einwanderung der Voralpencoregonen. |
| Citation: | Freyhof, J. & Kottelat, M. 2008. Coregonus gutturosus. In: IUCN 2011. IUCN Red List of Threatened Species. Version 2011.2. <www.iucnredlist.org>. Downloaded on 23 May 2012. |
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