Conservation Genetics

, Volume 13, Issue 1, pp 293–298 | Cite as

Remaining genetic diversity in Brazilian Merganser (Mergus octosetaceus)

  • Sibelle Torres Vilaça
  • Rodrigo A. F. Redondo
  • Livia Vanucci Lins
  • Fabricio R. Santos
Short Communication

Abstract

The Brazilian Merganser is a very rare and threatened species that nowadays inhabits only a few protected areas and their surroundings in the Brazilian territory. In order to estimate the remaining genetic diversity and population structure in this species, two mitochondrial genes were sequenced in 39 individuals belonging to two populations and in one individual collected in Argentina in 1950. We found a highly significant divergence between two major remaining populations of Mergus octosetaceus, which suggests a historical population structure in this species. Furthermore, two deeply divergent lineages were found in a single location, which could due to current or historical secondary contact. Based on the available genetic data, we point out future directions which would contribute to design strategies for conservation and management of this threatened species.

Keywords

Mergus octosetaceus Conservation Genetic diversity 

Supplementary material

10592_2011_262_MOESM1_ESM.tiff (584 kb)
Supplementary material 1 (TIFF 584 kb)
10592_2011_262_MOESM2_ESM.doc (22 kb)
Supplementary material 2 (DOC 21 kb)

References

  1. Antas PTZ (1996) The Brazilian Merganser (Mergus octosetaceus), the most threatened duck in South America. Game Wildfl 13:799–800Google Scholar
  2. Bandelt HJ, Forster P, Rohl A (1999) Median-joining networks for inferring intraspecific phylogenies. Mol Biol Evol 16:37–48PubMedGoogle Scholar
  3. BirdLife_International (2000) Threatened birds of the world. Lynx Edicions and BirdLife International, Barcelona and CambrigdeGoogle Scholar
  4. Cabanne GS, d’Horta FM, Sari EHR, Santos FR, Miyaki CY (2008) Nuclear and mitochondrial phylogeography of the Atlantic forest endemic Xiphorhynchus fuscus (Aves: Dendrocolaptidae): biogeography and systematics implications. Mol Phylogenet Evol 49:760–773PubMedCrossRefGoogle Scholar
  5. Donne-Gousse C, Laudet V, Hanni C (2002) A molecular phylogeny of anseriformes based on mitochondrial DNA analysis. Mol Phylogenet Evol 23:339–356PubMedCrossRefGoogle Scholar
  6. Drummond AJ, Rambaut A (2007) BEAST: Bayesian evolutionary analysis by sampling trees. Bmc Evol Biol 7:214–221PubMedCrossRefGoogle Scholar
  7. Excoffier L, Lischer HE (2010) Arlequin suite ver 3.5: a new series of programs to perform population genetics analyses under Linux and Windows. Mol Ecol Resour 10:564–657PubMedCrossRefGoogle Scholar
  8. Fay JC, Wu CI (2000) Hitchhiking under positive Darwinian selection. Genetics 155:1405–1413PubMedGoogle Scholar
  9. Frankham R, Briscoe DA, Ballou JD (2002) Introduction to conservation genetics. Cambridge University Press, New YorkGoogle Scholar
  10. Fu YX (1997) Statistical tests of neutrality of mutations against population growth, hitchhiking and background selection. Genetics 147:915–925PubMedGoogle Scholar
  11. Hefti-Gautschi B, Pfunder M, Jenni L, Keller V, Ellegren H (2009) Identification of conservation units in the European Mergus merganser based on nuclear and mitochondrial markers. Conserv Genet 10:87–99CrossRefGoogle Scholar
  12. Hughes B, Dugger B, Cunha HJ, Lamas I, Goerck J, Lins L, Silveira LF, Andrade R, Bruno SF, Rigueira S, Barros YM (2006) Action plan for the conservation of the Brazilian Merganser Mergus octosetaceus. Ibama, BrasíliaGoogle Scholar
  13. IUCN (2010) IUCN red list of threatened species. Version 2010. http://www.iucnredlist.org/. Accessed 01 Dec 2010
  14. Lamas IR (2006) Census of Brazilian Merganser Mergus octosetaceus in the region of Serra da Canastra National Park, Brazil, with discussion of its threats and conservation. Bird Conserv Int 16:145–154CrossRefGoogle Scholar
  15. Librado P, Rozas J (2009) DnaSP v5: a software for comprehensive analysis of DNA polymorphism data. Bioinformatics 25:1451–1452PubMedCrossRefGoogle Scholar
  16. Livezey BC (1995) phylogeny and evolutionary ecology of modern seaducks (Anatidae, Mergini). Condor 97:233–255CrossRefGoogle Scholar
  17. MacCarthy EM (2006) Handbook of avian hybrids of the world. Oxford University Press, OxfordGoogle Scholar
  18. Munoz-Fuentes V, Green AJ, Negro JJ, Sorenson MD (2005) Population structure and loss of genetic diversity in the endangered white-headed duck, Oxyura leucocephala. Conserv Genet 6:999–1015CrossRefGoogle Scholar
  19. Przeworski M (2002) The signature of positive selection at randomly chosen loci. Genetics 160:1179–1189PubMedGoogle Scholar
  20. Rambaut A, Drummond AJ (2007) Tracer version 1.5 available from http://beast.bio.ed.ac.uk/Tracer
  21. Ramos AC, Lemos-Filho JP, Ribeiro RA, Santos FR, Lovato MB (2007) Phylogeography of the tree Hymenaea stigonocarpa (Fabaceae: Caesalpinioideae) and the influence of quaternary climate changes in the Brazilian Cerrado. Ann Bot 100:1219–1228PubMedCrossRefGoogle Scholar
  22. Ridgely RS, Allnutt TF, Brooks T, McNicol DK, Mehlman DW, Young BE, Zook JR (2007) Digital Distribution Maps of the Birds of the Western Hemisphere, version 3.0, Nature serve, ArlingtonGoogle Scholar
  23. Solovyeva DV, Pearce JM (2011) Comparative mitochondrial genetics of North American and Eurasian mergansers with an emphasis on the endangered scaly-sided merganser (Mergus squamatus). Conserv Genet 12:839–844CrossRefGoogle Scholar
  24. Sorenson MD, Ast JC, Dimcheff DE, Yuri T, Mindell DP (1999) Primers for a PCR-based approach to mitochondrial genome sequencing in birds and other vertebrates. Mol Phylogenet Evol 12:105–114PubMedCrossRefGoogle Scholar
  25. Tajima F (1989) Statistical-method for testing the neutral mutation hypothesis by DNA polymorphism. Genetics 123:585–595PubMedGoogle Scholar
  26. Tubaro PL, Lijtmaer DA (2002) Hybridization patterns and the evolution of reproductive isolation in ducks. Biol J Linn Soc 77:193–200CrossRefGoogle Scholar
  27. Vilaça ST, Santos FR (2010) Biogeographic history of the species complex Basileuterus culicivorus (Aves, Parulidae) in the Neotropics. Mol Phylogenet Evol 57:585–597PubMedCrossRefGoogle Scholar

Copyright information

© Springer Science+Business Media B.V. 2011

Authors and Affiliations

  • Sibelle Torres Vilaça
    • 1
    • 2
  • Rodrigo A. F. Redondo
    • 1
    • 3
  • Livia Vanucci Lins
    • 4
  • Fabricio R. Santos
    • 1
  1. 1.Departamento de Biologia GeralLaboratório de Biodiversidade e Evolução Molecular, ICB, Universidade Federal de Minas GeraisBelo HorizonteBrazil
  2. 2.Dipartamento di Biologia Ed EvoluzioneUniversità di FerraraFerraraItaly
  3. 3.Institute of Science and TechnologyKlosterneuburgAustria
  4. 4.Instituto Terra BrasilisBelo HorizonteBrazil

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