Biological Invasions

, Volume 15, Issue 4, pp 723–728 | Cite as

Genetic studies facilitated management decisions on the invasion of the ruddy duck in Europe

  • Violeta Muñoz-Fuentes
  • Andy J. Green
  • Juan José Negro
Invasion Note

Abstract

The ruddy duck (Oxyura jamaicensis), a stifftail native to the Americas, was introduced to the UK in the 1950s and has since been recorded in 22 western Palearctic countries. By 2000, the UK population peaked at nearly 6,000 individuals. In 1991, hybridisation with the native and globally threatened (IUCN Endangered) white-headed duck (Oxyura leucocephala), a stifftail restricted to the Mediterranean and Asia, was recorded in Spain and culling of hybrids and ruddy ducks began. Here we report on a series of genetic studies that have enabled and supported management decisions to the benefit of the white-headed duck. First, genetic data confirmed that these are two distinct species, each of which is more closely related to other stifftail species. Second, molecular studies indicated that ruddy ducks in Spain, Iceland and elsewhere in Europe were of captive origin and not descendants from vagrants from their native North America. Third, genetic methods were used to distinguish among different hybrid generations in Spain and detected no ruddy duck introgression in birds identified morphologically as white-headed ducks. Collectively, these results supported management decisions to eradicate ruddy ducks from Europe. Subsequently, a control programme reduced the UK population by over 95 % by 2010, and the arrival of ruddy ducks to Spain decreased from 21 birds in 2003 to two sightings in 2010–2011. However, increased efforts to control small ruddy duck populations elsewhere in Europe and Morocco are still required to ensure conservation of the white-headed duck. This case of invasion by hybridization demonstrates that successful control is feasible given early detection followed by a rapid response plan; it also shows the contribution of research to management and that to guarantee the conservation of an endangered native species action may be required in countries outside its distribution range.

Keywords

Bern Convention Conservation Hybridization Mitochondrial DNA Microsatellites Introns Policy 

References

  1. Anonymous (1993) International Oxyura jamaicensis workshop, 1–2 March 1993, Arundel, UK. Summary and recommendations. International Waterfowl and Wetlands Research Bureau and JNCCGoogle Scholar
  2. Anstey S (1989) The status and conservation of the white-headed duck Oxyura leucocephala. International Waterfowl and Wetlands Research Bureau (now Wetlands International), SlimbridgeGoogle Scholar
  3. BirdLife International (2008) Oxyura leucocephala. In: IUCN 2011. IUCN Red List of Threatened Species. Version 2011.2. http://www.iucnredlist.org. Accessed 14 May 2012
  4. Cramp S, Simmons KEL (1977) Handbook of the birds of Europe, the Middle East and North Africa: the birds of the Western Palaearctic. Oxford University Press, OxfordGoogle Scholar
  5. Cranswick PA, Hall C (2010) Eradication of the ruddy duck Oxyura jamaicensis in the Western Palaearctic: a review of progress and a revised Action Plan 2010–2015. WWT report to the Bern Convention https://wcd.coe.int/com.instranet.InstraServlet?command=com.instranet.CmdBlobGet&InstranetImage=1757614&SecMode=1&DocId=1642848&Usage=2. Accessed 20 May 2012
  6. de Queiroz K (1998) The general lineage concept of species, species criteria, and the processes of speciation: a conceptual unification and terminological recommendations. In: Howard D, Berlocher SH (eds) Endless forms: species and speciation. Oxford University Press, Oxford, pp 57–75Google Scholar
  7. Edelaar P, Tella JL (2012) Managing non-native species: don’t wait until their impacts are proven. Ibis 154:635–637CrossRefGoogle Scholar
  8. Green AJ, Hughes B (1996) Action Plan for the white-headed duck (Oxyura leucocephala) in Europe. In: Heredia B, Rose L, Painter M (eds) Globally threatened birds in Europe Action Plans. Council of Europe Publishing, Strasbourg, pp 119–146Google Scholar
  9. Green AJ, Fox AD, Hughes B, Hilton GM (1999) Time-activity budgets and site selection of white-headed ducks Oxyura leucocephala at Burdur Lake, Turkey in late winter. Bird Study 46:62–73CrossRefGoogle Scholar
  10. Haldane JBS (1922) Sex ratio and unisexual sterility in animal hybrids. J Genet 12:101–109CrossRefGoogle Scholar
  11. Hughes B (1997) Oxyura jamaicensis. Ruddy duck. In: Hagemeijer WJM, Blair MJ (eds) The EBCC atlas of European breeding birds: their distribution and abundance. T & AD Poyser, LondonGoogle Scholar
  12. Hughes B, Robinson JA, Green AJ, Li ZWD, Mundkur T (Compilers) (2006) International Single Species Action Plan for the conservation of the white-headed duck Oxyura leucocephala. CMS Technical Series No. 13 and AEWA Technical Series No. 8, BonnGoogle Scholar
  13. International Wetlands (2006) Waterbird population estimates, 4th edn. Wetlands International, WageningenGoogle Scholar
  14. Kershaw M, Hughes B (2002) The winter status and distribution of Ruddy Ducks Oxyura jamaicensis in the UK, 1966/67–1999/2000. WWT Wetlands Advisory Service report to the Central Science Laboratory. Department for Environment, Food and Rural Affairs, LondonGoogle Scholar
  15. Kraus RH, Kerstens HH, van Hooft P, Megens H-J, Elmberg J, Tsvey A, Sartakov D, Soloviev SA, Crooijmans RPMA, Groenen MAM, Ydenberg RC, Prins HHT (2012) Widespread horizontal genomic exchange does not erode species barriers among sympatric ducks. BMC Evol Biol 12:45PubMedCrossRefGoogle Scholar
  16. McCracken KG, Sorenson MD (2005) Is homoplasy or lineage sorting the source of incongruent mtDNA and nuclear gene trees in the stiff-tailed ducks (NomonyxOxyura)? Syst Biol 54:35–55PubMedCrossRefGoogle Scholar
  17. Muñoz V, Green AJ, Negro JJ, Sorenson MD (2003) Population genetics of white-headed ducks and North American ruddy ducks. Threat Waterfowl Special Group News 14:55–58Google Scholar
  18. Muñoz-Fuentes V, Green AJ, Negro JJ, Sorenson MD (2005a) Population structure and loss of genetic diversity in the endangered white-headed duck, Oxyura leucocephala. Conserv Genet 6:999–1015CrossRefGoogle Scholar
  19. Muñoz-Fuentes V, Gyllenstrand N, Negro JJ, Green AJ, Vilà C (2005b) Microsatellite markers for two stifftail ducks: the white-headed duck, Oxyura leucocephala, and the ruddy duck, O. jamaicensis. Mol Ecol Notes 5:263–265CrossRefGoogle Scholar
  20. Muñoz-Fuentes V, Green AJ, Sorenson MD, Negro JJ, Vilà C (2006) The ruddy duck Oxyura jamaicensis in Europe: natural colonisation or human introduction? Mol Ecol 15:1441–1453PubMedCrossRefGoogle Scholar
  21. Muñoz-Fuentes V, Vilà C, Green AJ, Negro JJ, Sorenson M (2007) Hybridization between white-headed ducks and introduced ruddy ducks in Spain. Mol Ecol 16:629–638PubMedCrossRefGoogle Scholar
  22. Muñoz-Fuentes V, Green AJ, Sorenson MD (2008) Comparing the genetics of wild and captive populations of white-headed ducks Oxyura leucocephala: consequences for recovery programmes. Ibis 150:807–815CrossRefGoogle Scholar
  23. Sánchez MI, Green AD, Dolz JC (2000) The diets of the white-headed duck Oxyura leucocephala, ruddy duck O. jamaicensis and their hybrids from Spain. Bird Study 47:1000–1011CrossRefGoogle Scholar
  24. Scott DA (1982) Managing wetlands and their birds: a manual of wetland and waterfowl management. Proceedings of the third technical meeting on western palearctic migratory bird management, International Waterfowl and Wetlands Research Bureau (now Wetlands International), SlimbridgeGoogle Scholar
  25. Smith GC, Henderson IS, Robertson PA (2005) A model of ruddy duck Oxyura jamaicensis eradication for the UK. J Appl Ecol 42:546–555CrossRefGoogle Scholar
  26. Torres JA (2012) Informe Nacional Malvasía 2011. Consejería de Medio Ambiente, Junta de Andalucía (unpublished report)Google Scholar
  27. Torres JA, Moreno-Arroyo B (2000) Presencia de la malvasía canela (Oxyura jamaicensis) en España. Oxyura 10:69–78Google Scholar
  28. Urdiales C, Pereira P (1993) Claves de identificación de O. jamaicensis, O. leucocephala y sus híbridos. Instituto Nacional para la Conservación de la Naturaleza (ICONA), Spain.http://www.consevol.org/members/UrdialesPereira_OxyuraKey.pdf
  29. Zonfrillo B (2000) Ruddy duck. Br Birds 93:394–396Google Scholar

Copyright information

© Springer Science+Business Media B.V. 2012

Authors and Affiliations

  • Violeta Muñoz-Fuentes
    • 1
  • Andy J. Green
    • 1
  • Juan José Negro
    • 1
  1. 1.Estación Biológica de Doñana, CSICSevillaSpain

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