| Registro completo |
| Provedor de dados: |
Genet. Mol. Biol.
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| País: |
Brazil
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| Título: |
Cytotaxonomy of Parodon nasus and Parodon tortuosus (Pisces, Characiformes): A case of synonymy confirmed by cytogenetic analyses
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| Autores: |
Bellafronte,Elisangela
Margarido,Vladimir Pavan
Moreira-Filho,Orlando
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| Data: |
2005-12-01
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| Ano: |
2005
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| Palavras-chave: |
Cytogenetics
Parodontidae
Systematics
18S rDNA
5S rDNA
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| Resumo: |
Morphological and cytogenetical studies were carried out on the freshwater fish Parodon nasus and Parodon tortuosus in order to evaluate a putative synonymy. The diploid chromosome number observed in both species was 2n = 54 (48M/SM and 6ST) with no differences between the sexes. Despite slight differences in the pattern of heterochromatin distribution and the number of cusps in symphysean teeth, the location of nucleolar organizer regions (NORs) and 5S rRNA genes (both species-specific features) were similar in both species. The remarkable similarity observed between these allopatric species supports recent taxonomical reviews indicating that P. tortuosus is a synonym for P. nasus.
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| Tipo: |
Info:eu-repo/semantics/article
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| Idioma: |
Inglês
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| Identificador: |
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572005000500010
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| Editor: |
Sociedade Brasileira de Genética
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| Relação: |
10.1590/S1415-47572005000500010
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| Formato: |
text/html
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| Fonte: |
Genetics and Molecular Biology v.28 n.4 2005
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| Direitos: |
info:eu-repo/semantics/openAccess
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