Conservation Genetics

, Volume 12, Issue 6, pp 1633–1638 | Cite as

Multiple lines of evidence for an Australasian geographic boundary in the Indo-Pacific humpback dolphin (Sousa chinensis): population or species divergence?

  • C. H. Frère
  • J. Seddon
  • C. Palmer
  • L. Porter
  • G. J. Parra
Short Communication

Abstract

The taxonomic status of humpback dolphins (genus Sousa, sub-family Delphininae) is unresolved. While the classification of this genus ranges from a single to three nominal species, the International Union for Conservation of Nature and the International Whaling Commission only recognise a ‘two-species’ taxonomy (S. teuszii in west Africa, and S. chinensis in the Indo-Pacific). Under the IUCN (2008), S. chinensis is listed as ‘near threatened’, but is only considered as a ‘migratory’ species in Australia. Taxonomic resolution of the genus Sousa is needed to define particular conservation status and develop appropriate management actions. Using phylogenetic analyses of 1,082 bp of mitochondrial and 1,916 bp of nuclear DNA, we provide multiple lines of genetic evidence for the genetic distinction of S. chinensis in China and Indonesia from S. chinensis in Australia. The separation of Australian Sousa from Sousa of Southeast Asia requires a review of their current conservation status and respective management actions.

Keywords

Speciation Humpback dolphins Sousa ESU Conservation Phylogenetics 

Supplementary material

10592_2011_242_MOESM1_ESM.doc (85 kb)
Supplementary material 1 (DOC 85 kb)
10592_2011_242_MOESM2_ESM.doc (195 kb)
Supplementary material 2 (DOC 195 kb)
10592_2011_242_MOESM3_ESM.doc (64 kb)
Supplementary material 3 (DOC 63 kb)

References

  1. Amaral AR, Sequeira M, Martinez-Cedeira J, Coelho MM (2007) New insights on population genetic structure of Delphinus delphis from the northeast Atlantic and phylogenetic relationships within the genus inferred from two mitochondrial markers. Mar Biol 151:1967–1976CrossRefGoogle Scholar
  2. Avise JC (2000) Phylogeography: the history and formation of species. Harvard University Press, CambridgeGoogle Scholar
  3. Baker CS, Perry A, Bannister JL et al (1993) Abundant mitochondrial-DNA variation and worldwide population-structure in humpback whales. Proc Natl Acad Am 90:8239–8243CrossRefGoogle Scholar
  4. Beasley I, Robertson KM, Arnold P (2005) Description of a new dolphin, the Australian snubfin Orcaella heinsohni sp. n. (Cetacea, Delphinidae). Mar Mamm Sci 21:365–400CrossRefGoogle Scholar
  5. Bloomquist EW, Lemey P, Suchard AM (2010) Three roads diverged? Routes to phylogeographic inference. Trends Ecol Evol 25(11):626–632PubMedCrossRefGoogle Scholar
  6. Cagnazzi DDD, Harrison PL, Ross GJB et al (2009) Abundance and site fidelity of Indo-Pacific humpback dolphins in the Great Sandy Strait, Queensland, Australia. Mar Mamm Sci 27(2):255–281CrossRefGoogle Scholar
  7. Caballero S, Trujillo F, Vianna JA, Barrios-Garrido H, Montiel MG, et al (2007) Taxonomic status of the genus Sotalia: species level ranking for tucuxi (Sotalia fluviatilis) and costero (Sotalia guianensis) dolphins. Mar Mamm Sci 23:358–386Google Scholar
  8. Dalebout ML, Steel D, Baker S (2008) Phylogeny of the beaked whale genus Mesoplodon (Ziphiidae: Cetacea) Revealed by Nuclear Introns: implications for the evolution of male tusks. Syst Biol 57:857–875PubMedCrossRefGoogle Scholar
  9. Davis JI, Nixon KC (1992) Populations, genetic variation and the delimitation of phylogenetic species. Syst Biol 41:421–435Google Scholar
  10. Davis LG, Dibner MD, Battey JF (1986) Basic methods in molecular biology, 1st edn. Elsevier, New YorkGoogle Scholar
  11. Dawbin WH (1972) Dolphins and whales. In: Ryan P (ed) Encyclopaedia of Papua. Melbourne University Pres, New Guinea, pp 270–276Google Scholar
  12. Frère CH, Hale PT, Porter L, Cockcroft VG, Dalebout ML (2008) Phylogenetic analysis of mtDNA sequences suggests revision of humpback dolphin (Sousa spp.) taxonomy is needed. Mar Freshw Res 59:259–268CrossRefGoogle Scholar
  13. Hickerson MJ, Carstens BC, Cavender-Bares J et al (2010) Phylogeography’s past, present, and future: 10 years after Avise, 2000. Mol Phylogenet Evol 54:291–301PubMedCrossRefGoogle Scholar
  14. Huelsenbeck JP, Ronquist F (2001) MRBAYES: Bayesian inference of phylogenetic trees. Bioinformatics 17:754–755PubMedCrossRefGoogle Scholar
  15. Jefferson TA, Van Waerebeek K (2004) Geographic variation in skull morphology of humpback dolphins (Sousa spp.). Aquat Mamm 30:3–17Google Scholar
  16. Knowles LL (2009) Statistical phylogeography. Annu Rev Ecol Evol Syst 40:593–612CrossRefGoogle Scholar
  17. Krützen M, Sherwin WB, Berggren P, Gales NJ (2004) Population structure in an inshore cetacean revealed by microsatellite and mtDNA analysis: bottlenose dolphins (Tursiops spp.) in Shark Bay, Western Australia. Mar Mamm Sci 20:28–47CrossRefGoogle Scholar
  18. LeDuc RG, Perrin WF, Dizon AE (1999) Phylogenetic relationships among the delphinid cetaceans based on full cytochrome B sequences. Mar Mamm Sci 13:619–648CrossRefGoogle Scholar
  19. Lyons LA, Laughlin TF, Copeland NG et al (1997) Comparative anchor tagged sequences (CATS) for integrative mapping of mammalian genomes. Nat Genet 15:47–56PubMedCrossRefGoogle Scholar
  20. Mace GM (2004) The role of taxonomy in species conservation. Philosophical Transactions of the Royal Society of London Series B-Biological Sciences 359:711–719Google Scholar
  21. Milinkovitch MC, Le Duc R, Tiedemann R, Dizon A (2002) Applications of molecular data in cetacean taxonomy and population genetics with special emphasis on defining species boundaries. In: Evans PGH, Raga JA (eds) Marine mammals: biology and conservation. Kluwer Academic-Plenum Publishers, Dordrecht, NY, pp 325–359Google Scholar
  22. Moritz C (1994) Defining evolutionary significant units for conservation. Tree 9:373–375Google Scholar
  23. Moritz C (2002) Strategies to protect biological diversity and the evolutionary processes that sustain it. Syst Biol 51:238–254PubMedCrossRefGoogle Scholar
  24. Palumbi SR, Baker CS (1994) Contrasting population structure from nuclear intron sequences and mtDNA of humpback whales. Mol Biol Evol 11:426–435PubMedGoogle Scholar
  25. Parra G, Ross GJB (2009) Humpback dolphins. In: Perrin WF, Wursig B, Thewissen JGM (eds) Encyclopedia of marine mammals. Academic Press, San DiegoGoogle Scholar
  26. Parra GJ, Corkeron PJ, Marsh H (2004) The Indo-Pacific humpback dolphin, Sousa chinensis (Osbeck, 1765), in Australian waters: a summary of current knowledge. Aquat Mamm 30:197–206CrossRefGoogle Scholar
  27. Parra GJ, Corkeron PJ, Marsh E (2006a) Population sizes, site fidelity and residence patterns of Australian snubfin and Indo-Pacific humpback dolphins: implications for conservation. Biol Conserv 129:167–180CrossRefGoogle Scholar
  28. Parra GJ, Schick R, Corkeron PJ (2006b) Spatial distribution and environmental correlates of Australian snubfin and Indo-Pacific humpback dolphins. Ecography 29:396–406Google Scholar
  29. Penny D, Hendy MD (1985) The use of tree comparison metrics. Syst Zool 34:75–82CrossRefGoogle Scholar
  30. Perrin WF, Reeves RR, Dolar MLL, Jefferson TA, Marsh H, Wang JY, et al (eds) (2005) Report on the second workshop on the biology and conservation of small Cetaceans and Dugongs of Southeast Asia. Convention on Migratory Species (CMS) Technical Series publication no. 9, UNEP/CMS Secretariat, Bonn, GermanyGoogle Scholar
  31. Posada D (2008) jModelTest: phylogenetic model averaging. Mol Biol Evol 25:1253–1256PubMedCrossRefGoogle Scholar
  32. Posada D, Buckley TR (2004) Model selection and model averaging in phylogenetics: advantages of Akaike information criterion and Bayesian approaches over likelihood ratio tests. Syst Biol 53:793–808PubMedCrossRefGoogle Scholar
  33. Rannala B, Yang Z (1996) Probability distribution of molecular evolutionary trees: a new method of phylogenetic inference. Mol Evol 43:304–311CrossRefGoogle Scholar
  34. Roca AL, Georgiadis N, Pecon-Slattery J, O’Brien SJ (2001) Genetic evidence for two species of elephant in Africa. Science 293:1473–1477PubMedCrossRefGoogle Scholar
  35. Rodrigues MT, Pavan D, Curcio FF (2007) Two new species of lizards of the genus Bachia (Squamata, Gymnophthalmidae) from Central Brazil. J Herpetol 41:545–553CrossRefGoogle Scholar
  36. Schluter D (2009) Evidence for ecological speciation and its alternative. Science 323:737–741PubMedCrossRefGoogle Scholar
  37. Sulaiman ZH, Ovenden JR (2010) Population genetic evidence for the east–west division of the narrow-barred Spanish mackerel (Scomberomorus commerson, Perciformes: Teleostei) along Wallace’s line. Biodivers Conserv 19:563–574CrossRefGoogle Scholar
  38. Swofford DL (2003) PAUP*: phylogenetic analysis using parsimony (*and other methods), version 4. Sinauer Associates, SunderlandGoogle Scholar
  39. Thompson JN (2009) Which ecologically important traits are most likely to evolve rapidly? Oikos 118:1281–1283CrossRefGoogle Scholar
  40. Wolf JBW, Lindell J, Backström N (2009) Speciation genetics: current status and evolving approaches. Phil Trans Royal Soc B 365:1717–1733CrossRefGoogle Scholar
  41. Zwickl DJ (2006) Genetic algorithm approaches for the phylogenetic analysis of large biological sequence datasets under the maximum likelihood criterion. The University of Texas, AustinGoogle Scholar

Copyright information

© Springer Science+Business Media B.V. 2011

Authors and Affiliations

  • C. H. Frère
    • 1
  • J. Seddon
    • 1
  • C. Palmer
    • 2
    • 3
  • L. Porter
    • 4
  • G. J. Parra
    • 5
    • 6
  1. 1.School of Veterinary Sciences, University of QueenslandGattonAustralia
  2. 2.Biodiversity DivisionDepartment of Natural Resources, Environment, The Arts and SportPalmerstonAustralia
  3. 3.School of Environmental and Life SciencesCharles Darwin UniversityNorthern TerritoryAustralia
  4. 4.SMRU Ltd., St Andrews UniversityNorth Haugh, St Andrews, ScotlandUK
  5. 5.School of Biological Sciences, Flinders UniversityAdelaideAustralia
  6. 6.Aquatic Sciences, South Australian Research and Development Institute (SARDI)West BeachAustralia

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