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An X1X1X2X2/X1X2Y multiple sex chromosome system in a new speciesof the genus Gymnotus (Pisces, Gymnotiformes)

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Synopsis

We characterize the karyotype of Gymnotus sp., an undescribed fish species from the Paraná River. The diploid number is 2n = 40 chromosomes for females and 2n = 39 chromosomes for males, showing a multiple sex chromosome system of the X1X1X2X2/X1X2Y type, a first description in the genus Gymnotus. The nucleolar organizing regions sites are located in only one chromosome pair, a common feature among Gymnotiformes, and heterochromatin is present in the centromeric region of all chromosomes. Although the metacentric neo-Y chromosome appears to have arisen by centric fusion in three species from different Gymnotiformes families, the presence of the X1X1X2X2/X1X2Y sex chromosome system seems to be a homoplasic event in this group.

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References

  • L.F. Almeida-Toledo F. Foresti S.A. Toledo-Filho (1981) ArticleTitleConstitutive heterochromatin and nucleolus organizer regions in the knifefish Apteronotus albifrons (Pisces, Apteronotidae) Experientia 37 953–954

    Google Scholar 

  • L.F. Almeida-Toledo F. Foresti M.F.Z. Daniel S.A. Toledo-Filho (2000a) ArticleTitleSex chromosome evolution in fish: the formation of the neo-Y chromosome in Eigenmannia (Gymnotiformes) Chromosoma 109 197–200 Occurrence Handle1:CAS:528:DC%2BD3cXjslSjsbY%3D

    CAS  Google Scholar 

  • L.F. Almeida-Toledo F. Foresti M.F.Z. Daniel C.E. Lopes S.A. Toledo-Filho (2000b) ArticleTitleSex chromosome evolution in fish. II. Second occurrence of an X1X2Y sex chromosome system in Gymnotiformes Chromosoma Res 8 335–340

    Google Scholar 

  • L.F. Almeida-Toledo F. Foresti E.V. Péquignot M.F.Z. Daniel-Silva (2001) ArticleTitleXX:XY sex chromosome system with X heterochromatinization: an early stage of sex chromosome differentiation in the Neotropic electric eel Eigenmannia virescens Cytogenet.Cell Genet 95 73–78 Occurrence Handle11978973

    PubMed  Google Scholar 

  • L.F. Almeida-Toledo M.F.Z. Daniel-Silva C.B. Moysés S.B.A. Fonteles C.E. Lopes A. Akama F. Foresti (2002) ArticleTitleChromosome evolution in fish: Sex chromosome variability in Eigenmannia virescens (Gymnotiformes: Sternopygidae) Cytogenet.Genome Res 99 164–169 Occurrence Handle12900560

    PubMed  Google Scholar 

  • L.F. Almeida-Toledo F.M.C. Fernandes-Matioli (2001) ArticleTitleA Molecular phylogenetic analysis in Gymnotus species (Pisces: Gymnotiformes) with inferences on Chromosome evolution Caryologia 54 23–30

    Google Scholar 

  • J.A. Alves-Gomes (1998) The phylogenetic position of the South American electric fish genera Sternopygus and Archolaemus (Osthariophysi: Gymnotiformes) according to 12S and 16S mitochondrial DNA sequences L.R. Malabarba R.E. Reis R.P. Vari Z.M.S. Lucena C.A.S. Lucena (Eds) Phylogeny and Classification of Neotropical Fishes EDIPUCRS Porto Alegre 447–460

    Google Scholar 

  • L.A.C. Bertollo C.S. Takahashi O. Moreira-Filho (1978) ArticleTitleCytotaxonomic considerations on Hoplias lacerdae (Pisces, Erythrinidae) Brazil. J.Genet 1 103–20

    Google Scholar 

  • L.A.C. Bertollo M.S. Fontes A.S. Fenocchio J. Cano (1997) ArticleTitleThe X1X2Y sex chromosome system in the fish Hoplias malabaricus. I. G-, C- and chromosome replication banding Chromosome Res 5 493–499 Occurrence Handle1:CAS:528:DyaK2sXnvVGrt7w%3D Occurrence Handle9421268

    CAS  PubMed  Google Scholar 

  • L.A.C. Bertollo C.A. Mestriner (1998) ArticleTitleThe X1X2Y sex chromosome system in the fish Hoplias malabaricus. II. Meiotic analyses Chromosome Res 6 141–147 Occurrence Handle1:CAS:528:DyaK1cXitVWnsrk%3D Occurrence Handle9543017

    CAS  PubMed  Google Scholar 

  • Bertollo L.A.C., C. Oliveira, W.F. Molina, V.P. Margarido, M.S. Fontes, M.C. Pastori, J.N. Falcão & A.S. Fenocchio. 2004. Chromosome evolution in the erythrinid fish, Erythrinus erythrinus (Teleostei: Characiformes). Heredity 93: 228–233.

    Google Scholar 

  • W.G.R. Crampton J.S. Albert (2003) ArticleTitleRedescription of Gymnotus coropinae (Gymnotiformes, Gymnotidae), an often misidentified species of Neotropical electric fish, with notes on natural history and electric signals Zootaxa 348 1–20

    Google Scholar 

  • F.M. Fernandes-Matioli L.F. Almeida-Toledo S.A. Toledo-Filho (1997) ArticleTitleExtensive nucleolus organizer region polymorphism in Gymnotus carapo (Gymnotoidei, Gymnotidae) Cytogenet.Cell Genet 78 236–239 Occurrence Handle1:STN:280:DyaK1c7islSntg%3D%3D Occurrence Handle9465896

    CAS  PubMed  Google Scholar 

  • F. Foresti L.F. Almeida-Toledo S.A. Toledo-Filho (1984) ArticleTitleChromosome studies in Gymnotus carapo and Gymnotus sp Caryologia 37 141–146

    Google Scholar 

  • W.M. Howell D.A. Black (1980) ArticleTitleControlled silver-staining of nucleolus organizer regions with a protective colloidal developer: A I-step method Experientia 36 1014–1015 Occurrence Handle1:STN:280:Bi6D28npslw%3D Occurrence Handle6160049

    CAS  PubMed  Google Scholar 

  • J.G. Lundberg C.C. Fernandes J.S. Albert M. Garcia (1996) ArticleTitleMagosternarchus, a new genus with two new species of electric fishes (Gymnotiformes: Apteronotidae) from the Amazon River Basin, South America Copeia 1996 657–670

    Google Scholar 

  • F. Mago-Leccia (1994) ArticleTitleElectric fishes of the continental waters of America Classification and catalogue of the electric fishes of the order Gymnotiformes (Teleostei: Ostariophysi), with descriptions of new genera and species. Bibliogr.Acad. Cienc.Fishes Mater.Nat 29 1–225

    Google Scholar 

  • A.T. Sumner (1972) ArticleTitleA simple technique for demonstrating centromeric heterochromatin Exp.Cell Res 75 304–306 Occurrence Handle1:STN:280:CSyD2cjltFI%3D Occurrence Handle4117921

    CAS  PubMed  Google Scholar 

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Authors and Affiliations

  1. Departamento de Genètica e Evolução, Universidade Federal de São Carlos, 13565-905, Via Washington Luís Km 235, São Carlos, SP, Brazil

    Elisangela Bellafronte da Silva

  2. Centro de Ciências Biológicas e da Saúde, Universidade Estadual do Oeste do Paraná, 85814-110, Rua Universitária 2069, Cascavel, PR, Brazil

    Vladimir Pavan Margarido

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  1. Elisangela Bellafronte da Silva
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  2. Vladimir Pavan Margarido
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Correspondence to Vladimir Pavan Margarido.

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Bellafronte da Silva, E., Margarido, V. An X1X1X2X2/X1X2Y multiple sex chromosome system in a new speciesof the genus Gymnotus (Pisces, Gymnotiformes). Environ Biol Fish 73, 293–297 (2005). https://doi.org/10.1007/s10641-005-2144-5

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  • DOI: https://doi.org/10.1007/s10641-005-2144-5

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