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Extinct in the wild

A species that is extinct in the wild (EW) is one that has been categorized by the International Union for Conservation of Nature as known only by living members kept in captivity or as a naturalized population outside its historic range due to massive habitat loss.[1]

Conservation status
Extinct
Threatened
Lower Risk

Other categories

Related topics


Comparison of Red List classes above
and NatureServe status below
The Hawaiian crow has been listed as extinct in the wild since 2004
The Guam kingfisher has been extinct in the wild since 1986

Examples

 
The scimitar oryx (Oryx dammah) is an example of a species which is extinct in the wild.

Examples of species and subspecies that are extinct in the wild include:

The Pinta Island tortoise (Geochelone nigra abingdoni) had only one living individual, named Lonesome George, until his death in June 2012.[30] The tortoise was believed to be extinct in the mid-20th century, until Hungarian malacologist József Vágvölgyi spotted Lonesome George on the Galapagos island of Pinta on 1 December 1971. Since then, Lonesome George has been a powerful symbol for conservation efforts in general and for the Galapagos Islands in particular.[31] With his death on 24 June 2012, the subspecies is again believed to be extinct.[32] With the discovery of 17 hybrid Pinta tortoises located at nearby Wolf Volcano a plan has been made to attempt to breed the subspecies back into a pure state.[33]

Not all EW species are rare. An example is the Brugmansia family, where all seven species are widely cultivated but none are found in the wild.[34] Ultimately, the purpose of preserving biodiversity is to maintain ecological function so when a species exists only in captivity, it is ecologically extinct.

Reintroduction

Reintroduction is the deliberate release of individuals into the wild, from captivity or from other areas where the species survives. However, it may be difficult to reintroduce EW species into the wild, even if their natural habitats were restored, because survival techniques, which are often passed from parents to offspring during parenting, may have been lost.

An example of a successful reintroduction of a formerly EW species is Przewalski's horse, which as of 2018 is considered to be an endangered species, following reintroduction started in the 1990s.[35]

See also

References

  1. ^ (PDF). IUCN. p. 14. Archived from the original (PDF) on 21 June 2010. Retrieved 30 May 2010.
  2. ^ "Alagoas Curassow (Mitu mitu)". IUCN Red List of Threatened Species. 7 August 2018. 7 August 2018.
  3. ^ Freyhof, J.; Kottelat, M. (2008). "Stenodus leucichthys". IUCN Red List of Threatened Species. 2008: e.T20745A9229071. doi:10.2305/IUCN.UK.2008.RLTS.T20745A9229071.en.
  4. ^ "La Palma Pupfish (Cyprinodon longidorsalis)". IUCN Red List of Threatened Species. 27 September 2018. 27 September 2018.
  5. ^ "Christmas Island Blue-tailed Shinning-skink (Cryptoblepharus egeriae)". IUCN Red List of Threatened Species. 20 February 2017. 20 February 2017.
  6. ^ Qiwei, W. (2022). "Acipenser dabryanus". IUCN Red List of Threatened Species. 2022: e.T231A61462199. Retrieved 3 September 2022.
  7. ^ Donaldson, J.S. (2010). "Encephalartos brevifoliolatus". IUCN Red List of Threatened Species. 2010: e.T41882A10566751. doi:10.2305/IUCN.UK.2010-3.RLTS.T41882A10566751.en.[permanent dead link]
  8. ^ "Franklin Tree (Franklinia alatamaha)". IUCN Red List of Threatened Species. 3 February 2015. 3 February 2015.
  9. ^ "Golden Skiffia (Skiffia francesae)". IUCN Red List of Threatened Species. 18 April 2018. 18 April 2018.
  10. ^ "Guam Kingfisher (Todiramphus cinnamominus)". IUCN Red List of Threatened Species. October 2016. October 2016.
  11. ^ "Hawaiian Crow (Corvus hawaiiensis)". IUCN Red List of Threatened Species. October 2016. October 2016.
  12. ^ "'ALALĀ RELEASED INTO NATURAL AREA RESERVE". Aliso Laguna News.
  13. ^ . KITV4. Archived from the original on 24 October 2021. Retrieved 10 February 2020.
  14. ^ "Five more alala released into Puu Makaala Forest Reserve". West Hawaii Today. October 2018.
  15. ^ "Nectophrynoides asperginis". IUCN Red List of Threatened Species. 25 July 2014. 25 July 2014.
  16. ^ "Christmas Island Chained Gecko (Lepidodactylus listeri)". IUCN Red List of Threatened Species. 20 February 2017. 20 February 2017.
  17. ^ Emslie, R. (2020). "Ceratotherium simum ssp. cottoni". IUCN Red List of Threatened Species. 2020: e.T4183A45813838. doi:10.2305/IUCN.UK.2020-1.RLTS.T4183A45813838.en. Retrieved 13 November 2021.
  18. ^ "Leptogryllus deceptor". IUCN Red List of Threatened Species. August 1996. August 1996.
  19. ^ "'Last wave' for wild golden frog". BBC. 2 February 2008. Retrieved 22 February 2015.
  20. ^ "Père David's Deer (Elaphurus davidianus)". IUCN Red List of Threatened Species. 31 March 2016. 31 March 2016.
  21. ^ Yang, R., Zhang, L., Tan, B. and Zhong, Z. 2003. Investigation on the status of Père David’s deer in China. Chinese Journal of Zoology 38: 76~81.
  22. ^ "Scimitar-horned Oryx (Oryx dammah)". IUCN Red List of Threatened Species. 27 April 2016. 27 April 2016.
  23. ^ "Scimitar-horned oryx returns to Sahara". Zoological Society of London.
  24. ^ "Zenaida graysoni (Socorro Dove)". IUCN Red List of Threatened Species. October 2016. October 2016.
  25. ^ "Thermosphaeroma thermophilum". IUCN Red List of Threatened Species. August 1996. August 1996.
  26. ^ "South China Tiger". World Wide Fund for Nature.
  27. ^ "Panthera tigris amoyensis". IUCN Red List of Threatened Species. 30 June 2008. 30 June 2008.
  28. ^ "Spix's Macaw". IUCN Red List of Threatened Species. 20 June 2019. 20 June 2019.
  29. ^ "Wyoming Toads Begin To Recover As States Seek Endangered Species Act Overhaul". NPR.
  30. ^ Gardner, Simon (6 February 2001). . Archived from the original on 4 June 2011.
  31. ^ Nicholls, H. (2006). . London, England: Macmillan Science. ISBN 1-4039-4576-4. Archived from the original on 14 September 2011. Retrieved 28 April 2011.
  32. ^ "Last Pinta giant tortoise Lonesome George dies". BBC News. 24 June 2012. Retrieved 25 June 2012.
  33. ^ "Scientists: Extinct Galapagos tortoise species could be resurrected". CTV News. 22 November 2012. Retrieved 25 November 2012.
  34. ^ Petruzzello, Melissa. "Extinct in the Wild but Still Around: 5 Plants and Animals Kept Alive by Humans". ENCYCLOPÆDIA BRITANNICA. ENCYCLOPÆDIA BRITANNICA. Retrieved 16 November 2019.
  35. ^ . 19 December 2005. Archived from the original on 12 February 2012. Retrieved 5 March 2018.

External links

extinct, wild, species, that, extinct, wild, that, been, categorized, international, union, conservation, nature, known, only, living, members, kept, captivity, naturalized, population, outside, historic, range, massive, habitat, loss, conservation, status, iu. A species that is extinct in the wild EW is one that has been categorized by the International Union for Conservation of Nature as known only by living members kept in captivity or as a naturalized population outside its historic range due to massive habitat loss 1 Conservation status by IUCN Red List categoryExtinctExtinct EX Extinct in the Wild EW list list ThreatenedCritically Endangered CR Endangered EN Vulnerable VU list list list Lower RiskNear Threatened NT Conservation Dependent CD Least Concern LC list list Other categoriesData Deficient DD Not Evaluated NE list Related topics International Union forConservation of Nature IUCN IUCN Red List NatureServe status Lists of organisms by populationComparison of Red List classes aboveand NatureServe status belowvteThe Hawaiian crow has been listed as extinct in the wild since 2004 The Guam kingfisher has been extinct in the wild since 1986 Contents 1 Examples 2 Reintroduction 3 See also 4 References 5 External linksExamples Edit The scimitar oryx Oryx dammah is an example of a species which is extinct in the wild Examples of species and subspecies that are extinct in the wild include Alagoas curassow last unconfirmed sighting reported in the late 1980s listed extinct in the wild since 1994 2 Beloribitsa 3 Cachorrito de charco palmal last seen in 1994 listed extinct in the wild since 1996 4 Christmas Island blue tailed skink listed extinct in the wild since 2014 5 Dabry s sturgeon listed extinct in the wild since 2022 6 Escarpment cycad listed extinct in the wild since 2006 7 Franklinia last seen in 1803 listed extinct in the wild since 1998 8 Golden skiffia listed extinct in the wild since 1996 9 Guam kingfisher listed extinct in the wild since 1986 10 Hawaiian crow or ʻalala last seen in 2002 listed as extinct in the wild since 2004 11 Small groups have since been released in 2017 12 13 and 2018 14 Kihansi spray toad listed extinct in the wild since 2009 15 Lister s gecko listed extinct in the wild since 2014 16 Northern white rhinoceros possibly extinct in the wild 17 Oahu deceptor bush cricket listed extinct in the wild since 1996 18 Panamanian golden frog possibly extinct in the wild 19 Pere David s deer listed extinct in the wild since 2008 20 However reintroduction from captive populations began in 1985 with 53 wild herds of varying sizes being recorded in 2003 21 Scimitar oryx listed extinct in the wild since 2000 22 A herd of 21 was successfully released into the wild in Chad in 2016 producing the first offspring born in the wild in over 20 years in 2017 23 Socorro dove listed extinct in the wild since 1994 24 Socorro isopod last seen in 1988 listed as extinct in the wild since August 1996 25 South China tiger since 2008 IUCN Red List lists as critically endangered possibly extinct in the wild 26 27 Spix s macaw listed extinct in the wild since June 2019 28 Wyoming toad listed extinct in the wild since 1991 although 853 have been released into the wild since 1995 leading to a population of around 1 500 in 2017 29 The Pinta Island tortoise Geochelone nigra abingdoni had only one living individual named Lonesome George until his death in June 2012 30 The tortoise was believed to be extinct in the mid 20th century until Hungarian malacologist Jozsef Vagvolgyi spotted Lonesome George on the Galapagos island of Pinta on 1 December 1971 Since then Lonesome George has been a powerful symbol for conservation efforts in general and for the Galapagos Islands in particular 31 With his death on 24 June 2012 the subspecies is again believed to be extinct 32 With the discovery of 17 hybrid Pinta tortoises located at nearby Wolf Volcano a plan has been made to attempt to breed the subspecies back into a pure state 33 Not all EW species are rare An example is the Brugmansia family where all seven species are widely cultivated but none are found in the wild 34 Ultimately the purpose of preserving biodiversity is to maintain ecological function so when a species exists only in captivity it is ecologically extinct Reintroduction EditMain article Reintroduction Reintroduction is the deliberate release of individuals into the wild from captivity or from other areas where the species survives However it may be difficult to reintroduce EW species into the wild even if their natural habitats were restored because survival techniques which are often passed from parents to offspring during parenting may have been lost An example of a successful reintroduction of a formerly EW species is Przewalski s horse which as of 2018 is considered to be an endangered species following reintroduction started in the 1990s 35 See also EditIUCN Red List extinct in the wild species for a list by taxonomy Category IUCN Red List extinct in the wild species for an alphabetical list Extinction Local extinction Lists of extinct speciesReferences Edit 2001 IUCN Red List Categories and Criteria Version 3 1 PDF IUCN p 14 Archived from the original PDF on 21 June 2010 Retrieved 30 May 2010 Alagoas Curassow Mitu mitu IUCN Red List of Threatened Species 7 August 2018 7 August 2018 Freyhof J Kottelat M 2008 Stenodus leucichthys IUCN Red List of Threatened Species 2008 e T20745A9229071 doi 10 2305 IUCN UK 2008 RLTS T20745A9229071 en La Palma Pupfish Cyprinodon longidorsalis IUCN Red List of Threatened Species 27 September 2018 27 September 2018 Christmas Island Blue tailed Shinning skink Cryptoblepharus egeriae IUCN Red List of Threatened Species 20 February 2017 20 February 2017 Qiwei W 2022 Acipenser dabryanus IUCN Red List of Threatened Species 2022 e T231A61462199 Retrieved 3 September 2022 Donaldson J S 2010 Encephalartos brevifoliolatus IUCN Red List of Threatened Species 2010 e T41882A10566751 doi 10 2305 IUCN UK 2010 3 RLTS T41882A10566751 en permanent dead link Franklin Tree Franklinia alatamaha IUCN Red List of Threatened Species 3 February 2015 3 February 2015 Golden Skiffia Skiffia francesae IUCN Red List of Threatened Species 18 April 2018 18 April 2018 Guam Kingfisher Todiramphus cinnamominus IUCN Red List of Threatened Species October 2016 October 2016 Hawaiian Crow Corvus hawaiiensis IUCN Red List of Threatened Species October 2016 October 2016 ALALA RELEASED INTO NATURAL AREA RESERVE Aliso Laguna News Rare Hawaiian crows released into native forests of Hawai i Island KITV4 Archived from the original on 24 October 2021 Retrieved 10 February 2020 Five more alala released into Puu Makaala Forest Reserve West Hawaii Today October 2018 Nectophrynoides asperginis IUCN Red List of Threatened Species 25 July 2014 25 July 2014 Christmas Island Chained Gecko Lepidodactylus listeri IUCN Red List of Threatened Species 20 February 2017 20 February 2017 Emslie R 2020 Ceratotherium simum ssp cottoni IUCN Red List of Threatened Species 2020 e T4183A45813838 doi 10 2305 IUCN UK 2020 1 RLTS T4183A45813838 en Retrieved 13 November 2021 Leptogryllus deceptor IUCN Red List of Threatened Species August 1996 August 1996 Last wave for wild golden frog BBC 2 February 2008 Retrieved 22 February 2015 Pere David s Deer Elaphurus davidianus IUCN Red List of Threatened Species 31 March 2016 31 March 2016 Yang R Zhang L Tan B and Zhong Z 2003 Investigation on the status of Pere David s deer in China Chinese Journal of Zoology 38 76 81 Scimitar horned Oryx Oryx dammah IUCN Red List of Threatened Species 27 April 2016 27 April 2016 Scimitar horned oryx returns to Sahara Zoological Society of London Zenaida graysoni Socorro Dove IUCN Red List of Threatened Species October 2016 October 2016 Thermosphaeroma thermophilum IUCN Red List of Threatened Species August 1996 August 1996 South China Tiger World Wide Fund for Nature Panthera tigris amoyensis IUCN Red List of Threatened Species 30 June 2008 30 June 2008 Spix s Macaw IUCN Red List of Threatened Species 20 June 2019 20 June 2019 Wyoming Toads Begin To Recover As States Seek Endangered Species Act Overhaul NPR Gardner Simon 6 February 2001 Lonesome George faces own Galapagos tortoise curse Archived from the original on 4 June 2011 Nicholls H 2006 Lonesome George The Life and Loves of a Conservation Icon London England Macmillan Science ISBN 1 4039 4576 4 Archived from the original on 14 September 2011 Retrieved 28 April 2011 Last Pinta giant tortoise Lonesome George dies BBC News 24 June 2012 Retrieved 25 June 2012 Scientists Extinct Galapagos tortoise species could be resurrected CTV News 22 November 2012 Retrieved 25 November 2012 Petruzzello Melissa Extinct in the Wild but Still Around 5 Plants and Animals Kept Alive by Humans ENCYCLOPAEDIA BRITANNICA ENCYCLOPAEDIA BRITANNICA Retrieved 16 November 2019 An extraordinary return from the brink of extinction for worlds last wild horse 19 December 2005 Archived from the original on 12 February 2012 Retrieved 5 March 2018 External links EditList of Extinct in the Wild species as identified by the IUCN Red List of Threatened Species Portals Ecology Biology Retrieved from https en wikipedia org w index php title Extinct in 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