Phylogenetic analysis of mtDNA sequences suggests revision of humpback dolphin (Sousa spp.) taxonomy is needed

被引:35
作者
Frere, Celine H. [1 ]
Hale, Peter T. [2 ]
Porter, Lindsay [3 ]
Cockcroft, Victor G. [4 ]
Dalebout, Merel L. [1 ]
机构
[1] Univ New S Wales, Sch Biol Earth & Ecol Sci, Sydney, NSW 2052, Australia
[2] Univ Queensland, Sch Integrat Biol, Brisbane, Qld 4072, Australia
[3] Worldwide Fund Nat, Hong Kong, Hong Kong, Peoples R China
[4] Ctr Dolphin Studies, ZA-6600 Plettenberg Bay, South Africa
关键词
Australia; Delphininae; Hong Kong; phylogeography; South Africa; speciation;
D O I
10.1071/MF07120
中图分类号
S9 [水产、渔业];
学科分类号
0908 ;
摘要
Humpback dolphins (Sousa spp.) have a wide distribution in the tropical Atlantic and Indo-Pacific Oceans and a confused taxonomy. Morphological assessments suggest three species groupings-Sousa teuszii (eastern Atlantic), Sousa plumbea (western Indo-Pacific), and Sousa chinensis (eastern Indo-Pacific)-but most taxonomies recognise only two species-S. chinensis (Indo-Pacific), and S. teuszii (Atlantic). To investigate phylogenetic relationships, mitochondrial DNA control region sequences (338 base pairs) from 72 Sousa representing three populations in the Indo-Pacific (South Africa: S. plumbea, n=23; China: S. chinensis, n=19; and Australia: S. chinensis, n=28), and S. teuszii in the Atlantic (Mauritania, n=2) were generated. All three Indo-Pacific populations formed robust, monophyletic clades with high bootstrap (BS) and Bayesian posterior probability (BPP) scores. Surprisingly, humpback dolphins from South Africa and China formed a strongly-supported clade with the Atlantic S. teuszii (BS 63%, BPP 0.92) to the exclusion of animals from Australia. Genetic divergence between animals from China and Australia (D-A = 8.4% +/- 2.47%) was greater than between China and South Africa (D-A = 5.1% +/- 1.80%). These results strongly suggest that Australian humpback dolphins are not S. chinensis but may represent a distinct species in their own right.
引用
收藏
页码:259 / 268
页数:10
相关论文
共 54 条
[1]  
Akaike H., 1973, 2 INT S INFORM THEOR, P267, DOI [DOI 10.1007/978-1-4612-1694-0_15, 10.1007/978-1-4612-1694-0_15]
[2]  
Baker Charles Scott, 2002, P84
[3]  
BANNISTER JL, 1996, ACTION PLAN FORAUSTR
[4]  
BAUM DA, 1995, MONOG SYST BOTAN, V53, P289
[5]   Description of a new dolphin, the Australian Snubfin dolphin Orcaella heinsohni Sp N. (Cetacea, Delphinidae) [J].
Beasley, I ;
Robertson, KM ;
Arnold, P .
MARINE MAMMAL SCIENCE, 2005, 21 (03) :365-400
[6]   Taxonomic status of the genus Sotalia:: Species level ranking for "tucuxi" (Sotalia fluviatilis) and "costero" (Sotalia guianensis) dolphins [J].
Caballero, S. ;
Trujillo, F. ;
Vianna, J. A. ;
Barrios-Garrido, H. ;
Montiel, M. G. ;
Beltran-Pedreros, S. ;
Marmontel, M. ;
Santos, M. C. ;
Rossi-Santos, M. ;
Santos, F. R. ;
Baker, C. S. .
MARINE MAMMAL SCIENCE, 2007, 23 (02) :358-386
[7]  
COCKCROFT VG, 1997, SC49SM25 SCI COMM IN
[8]  
COCKCROFT VG, 2002, SC54SM23 IWC
[9]   A comprehensive and validated molecular taxonomy of beaked whales, family Ziphiidae [J].
Dalebout, ML ;
Baker, CS ;
Mead, JG ;
Cockcroft, VG ;
Yamada, TK .
JOURNAL OF HEREDITY, 2004, 95 (06) :459-473
[10]   A new species of beaked whale Mesoplodon perrini sp N. (Cetacea: Ziphiidae) discovered through phylogenetic analyses of mitochondrial DNA sequences [J].
Dalebout, ML ;
Mead, JG ;
Baker, CS ;
Baker, AN ;
van Helden, AL .
MARINE MAMMAL SCIENCE, 2002, 18 (03) :577-608