Data/hora: 05/06/2024 16:17:13

Provedor de dados: | 74
País: | Brazil
Título: | Cytogenetics and DNA barcode reveal an undescribed Apareiodon species (Characiformes: Parodontidae)
Autores: | Santos,Emanoel Oliveira dos; Deon,Geize Aparecida; Almeida,Rafael Bonfim de; Oliveira,Ezequiel Aguiar de; Nogaroto,Viviane; Silva,Hugmar Pains da; Pavanelli,Carla Simone; Cestari,Marta Margarete; Bertollo,Luiz Antonio Carlos; Moreira-Filho,Orlando; Vicari,Marcelo Ricardo.
Data: | 2019-06-01
Ano: | 2019
Palavras-chave: | Chromosomal differentiation; Hidden diversity; Repetitive DNA; Sex chromosomes.
Resumo: | Abstract Parodontidae is a small group of fish and some species are particularly difficult to identify due to the lack of sufficiently consistent morphological traits. Cytogenetically, the species possess 2n = 54 chromosomes and are either sex-homomorphic or sex-heteromorphic (regarding its chromosomes). We evaluated data on color, tooth morphology, cytogenetics, and mitochondrial markers (COI) in Apareiodon specimens from the Aripuanã River (Amazon basin) and the results were compared to other congeneric taxa. Morphological results show an overlap of body color and tooth morphology to other known Apareiodon. The cytogenetics data showed that the 2n = 54 chromosomes, 50 m/sm + 4 st and, a ZZ/ZW sex chromosome system in Apareiodon sp. are common to other species of the genus. However, the number and chromosomal localization of the 45S ribosomal and pPh2004 satellite DNA sites, in addition to W chromosome localization of the pPh2004 appear to be exclusive cytogenetic features in Apareiodon sp. Our phylogenetic tree revealed well-supported clades and confirmed, by barcode species delimitation analysis, a new Molecular Operational Taxonomic Unit (MOTU) for Apareiodon sp. (Aripuanã River). As a whole, the above features support the occurrence of a new species of the Apareiodon, thus far unknown for the Parodontidae.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572019000300365
Editor: | Sociedade Brasileira de Genética
Relação: | 10.1590/1678-4685-gmb-2018-0066
Formato: | text/html
Fonte: | Genetics and Molecular Biology  v.42 n.2 2019
Fonte: | info:eu-repo/semantics/openAccess