Gwyniad

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Gwyniad
FMIB 49704 Gwyniad, caught by H Anderson, Esq Ullswater 1904.jpeg
Individual caught in 1904
Scientific classification
Kingdom: Animalia
Phylum: Chordata
Class: Actinopterygii
Order: Salmoniformes
Family: Salmonidae
Subfamily: Coregoninae
Genus: Coregonus
Species: C. pennantii
Binomial name
Coregonus pennantii
Valenciennes, 1848

The gwyniad (Coregonus pennantii) is a freshwater whitefish native to Bala Lake (Llyn Tegid) in northern Wales.

The population is threatened by deteriorating water quality and by the ruffe, a fish introduced to the lake in the 1980s and now eating the eggs and fry of gwyniad. As a conservation measure, eggs of gwyniad were transferred to Llyn Arenig Fawr, a nearby lake, between 2003 and 2007.[2][1][3]

The taxonomy of the genus Coregonus is disputed;[4] some authorities assign the gwyniad to the common whitefish (Coregonus lavaretus),[2][5] and a morphological review in 2012 was unable to find any solid evidence for recognizing the gwyniad as a separate species.[6] FishBase and the IUCN list it as a distinct species, C. pennantii.[1][4]

See also[edit]

References[edit]

  1. ^ a b c Freyhof, J. & Kottelat, M. (2008). Coregonus pennantii. In: IUCN Red List of Threatened Species. Version 2010.1. Downloaded on 14 November 2017.
  2. ^ a b Winfield, Ian J; Fletcher, Janice M; James, J Ben (March 2013). "Llyn Arenig Fawr Gwyniad Survey 2012" (PDF). Countryside Council for Wales. Retrieved 18 April 2014. 
  3. ^ Gwyniad BBC. Wales Nature & Outdoors (read April 2010)
  4. ^ a b Froese, Rainer and Pauly, Daniel, eds. (2009). "Coregonus pennantii" in FishBase. December 2009 version.
  5. ^ "Conservation". Snowdonia National Park. Archived from the original on 19 April 2014. Retrieved 19 April 2014. 
  6. ^ Etheridge, E.C.; C. E. Adams; C. W. Bean; N. C. Durie; A. R. D. Gowans; C. Harrod; A. A. Lyle; P. S. Maitland; and I. J. Winfield (2012). Are phenotypic traits useful for differentiating among a priori Coregonus taxa? Journal of Fish Biology 80: 387–407. doi:10.1111/j.1095-8649.2011.03189.x

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