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Non-homologous sex chromosomes in two species of the genus Eigenmannia (Teleostei: Gymnotiformes)

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2008

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Trifonov, Vladimir A.
Ferguson-Smith, Malcolm A.
Almeida-Toledo, Lurdes Foresti de

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http://nbn-resolving.de/urn:nbn:de:bsz:352-opus-76015
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https://doi.org/10.1159/000124382
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Biologie: Publikationen
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Published

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Cytogenetic and Genome Research. 2008, 121(1), pp. 55-58. ISSN 1424-8581. eISSN 1424-859X. Available under: doi: 10.1159/000124382

Zusammenfassung

The Neotropical genus Eigenmannia is a fish group with unknown species diversity where representatives possess a broad range of chromosomal sex determining systems namely XY/XX, X1X2Y/X1X1X2X2, ZZ/ZW as well as homomorphic sex chromosomes. To test the homology of two heteromorphic XY sex chromosome systems present in two sympatric populations, reciprocal cross-species FISH experiments were performed using probes derived by microdissection of X and Y chromosomes present in analyzed specimens of Eigenmannia virescens and Eigenmannia sp.2, respectively. While X and Y paint probes hybridized to species-specific sex chromosomes, in reciprocal cross-FISH both probes hybridized exclusively to autosomes. The result suggests multiple independent origins of the XY systems in the analyzed populations.

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570 Biowissenschaften, Biologie

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ISO 690HENNING, Frederico, Vladimir A. TRIFONOV, Malcolm A. FERGUSON-SMITH, Lurdes Foresti de ALMEIDA-TOLEDO, 2008. Non-homologous sex chromosomes in two species of the genus Eigenmannia (Teleostei: Gymnotiformes). In: Cytogenetic and Genome Research. 2008, 121(1), pp. 55-58. ISSN 1424-8581. eISSN 1424-859X. Available under: doi: 10.1159/000124382
BibTex
@article{Henning2008Nonho-7570,
  year={2008},
  doi={10.1159/000124382},
  title={Non-homologous sex chromosomes in two species of the genus Eigenmannia (Teleostei: Gymnotiformes)},
  number={1},
  volume={121},
  issn={1424-8581},
  journal={Cytogenetic and Genome Research},
  pages={55--58},
  author={Henning, Frederico and Trifonov, Vladimir A. and Ferguson-Smith, Malcolm A. and Almeida-Toledo, Lurdes Foresti de}
}
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