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Proc Biol Sci. Jan 7, 2002; 269(1486): 65–73.
PMCID: PMC1690865

A rapid fish radiation associated with the last sea-level changes in southern Brazil: the silverside Odontesthes perugiae complex.

Abstract

Coastal freshwater fishes provide valuable models for studying the role of the last glaciations in promoting speciation. To date, the great majority of studies are of Northern Hemisphere taxa, and reflect the influence of vicariant events during, or prior to, the Pleistocene. Microsatellite markers and mitochondrial DNA sequences were used to investigate patterns of population divergence and evolutionary relationships in a freshwater group of silverside fishes (Odontesthes perugiae complex), endemic to the recently formed coastal plain of southern Brazil. Lacustrine morphotypes showed concordant patterns of genetic and morphological divergence consistent with the geographical history of the coastal plain. The results support the proposal of a silverside radiation chronologically shaped by the sea-level changes of the Pleistocene and Holocene. The radiating lineage comprises a minimum of three allopatric and two sympatric lacustrine species. Four species displayed extremely high levels of genetic variation and some of the most rapid speciation rates reported in fishes. These features were related to a marine-estuarine origin of the radiation. To the best of our knowledge, this study represents the first molecular phylogeographic survey of a coastal radiation in South America.

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Selected References

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  • Beheregaray LB, Sunnucks P. Microsatellite loci isolated from Odontesthes argentinensis and the O. perugiae species group and their use in other South American silverside fish. Mol Ecol. 2000 May;9(5):629–631. [PubMed]
  • Beheregaray LB, Sunnucks P. Fine-scale genetic structure, estuarine colonization and incipient speciation in the marine silverside fish Odontesthes argentinensis. Mol Ecol. 2001 Dec;10(12):2849–2866. [PubMed]
  • Bermingham E, Avise JC. Molecular zoogeography of freshwater fishes in the southeastern United States. Genetics. 1986 Aug;113(4):939–965. [PMC free article] [PubMed]
  • Cavalli-Sforza LL, Edwards AW. Phylogenetic analysis. Models and estimation procedures. Am J Hum Genet. 1967 May;19(3 Pt 1):233–257. [PMC free article] [PubMed]
  • Clement M, Posada D, Crandall KA. TCS: a computer program to estimate gene genealogies. Mol Ecol. 2000 Oct;9(10):1657–1659. [PubMed]
  • Hewitt GM. Speciation, hybrid zones and phylogeography - or seeing genes in space and time. Mol Ecol. 2001 Mar;10(3):537–549. [PubMed]
  • Knowles LL. Did the pleistocene glaciations promote divergence? Tests of explicit refugial models in montane grasshopprers. Mol Ecol. 2001 Mar;10(3):691–701. [PubMed]
  • Lee WJ, Conroy J, Howell WH, Kocher TD. Structure and evolution of teleost mitochondrial control regions. J Mol Evol. 1995 Jul;41(1):54–66. [PubMed]
  • Petren K, Grant BR, Grant PR. A phylogeny of Darwin's finches based on microsatellite DNA length variation. Proc Biol Sci. 1999 Feb 22;266(1417):321–321. [PMC free article]
  • Posada D, Crandall KA. Intraspecific gene genealogies: trees grafting into networks. Trends Ecol Evol. 2001 Jan 1;16(1):37–45. [PubMed]
  • Powell JR. Monophyly/paraphyly/polyphyly and gene/species trees: an example from Drosophila. Mol Biol Evol. 1991 Nov;8(6):892–896. [PubMed]
  • Schliewen U, Rassmann K, Markmann M, Markert J, Kocher T, Tautz D. Genetic and ecological divergence of a monophyletic cichlid species pair under fully sympatric conditions in Lake Ejagham, Cameroon. Mol Ecol. 2001 Jun;10(6):1471–1488. [PubMed]
  • Sunnucks P. Efficient genetic markers for population biology. Trends Ecol Evol. 2000 May;15(5):199–203. [PubMed]
  • Sunnucks P, Hales DF. Numerous transposed sequences of mitochondrial cytochrome oxidase I-II in aphids of the genus Sitobion (Hemiptera: Aphididae). Mol Biol Evol. 1996 Mar;13(3):510–524. [PubMed]
  • Sunnucks P, Wilson AC, Beheregaray LB, Zenger K, French J, Taylor AC. SSCP is not so difficult: the application and utility of single-stranded conformation polymorphism in evolutionary biology and molecular ecology. Mol Ecol. 2000 Nov;9(11):1699–1710. [PubMed]
  • Takezaki N, Nei M. Genetic distances and reconstruction of phylogenetic trees from microsatellite DNA. Genetics. 1996 Sep;144(1):389–399. [PMC free article] [PubMed]
  • Taylor EB, Harvey S, Pollard S, Volpe J. Postglacial genetic differentiation of reproductive ecotypes of kokanee Oncorhynchus nerka in Okanagan Lake, British Columbia. Mol Ecol. 1997 Jun;6(6):503–517. [PubMed]
  • Templeton AR, Crandall KA, Sing CF. A cladistic analysis of phenotypic associations with haplotypes inferred from restriction endonuclease mapping and DNA sequence data. III. Cladogram estimation. Genetics. 1992 Oct;132(2):619–633. [PMC free article] [PubMed]

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