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- Title
Chromosomal organization of retrotransposon <italic>Rex</italic>1 in <italic>Astyanax</italic> species (Characiformes, Characidae).
- Authors
Pessenda, Gabriela; Piscor, Diovani; Silva, Edson L. da; Centofante, Liano; Parise-Maltempi, Patricia P.
- Abstract
The cytogenetic studies of retrotranposons <italic>Rex</italic> have been characterized in several fish groups, including species of the <italic>Astyanax</italic> genus. This group presents an extensive variability in their karyotype, with diploid numbers of 2<italic>n =</italic> 52, 50, 48, 46 and 36 chromosomes. Thus, the aim of this study was to evaluate the distribution of the retrotransposable element <italic>Rex</italic>1, in six <italic>Astyanax</italic> species, with different diploid numbers. The species analyzed were <italic>Astyanax altiparanae</italic> (2<italic>n =</italic> 50), <italic>Astyanax asuncionensis</italic> (2<italic>n =</italic> 50), <italic>Astyanax eigenmanniorum</italic> (2<italic>n =</italic> 50), <italic>Astyanax marionae</italic> (2<italic>n =</italic> 48), <italic>Astyanax fasciatus</italic> (2<italic>n =</italic> 46) and <italic>Astyanax schubarti</italic> (2<italic>n =</italic> 36). <italic>Rex</italic>1 was dispersed in the <italic>Astyanax</italic> species, suggesting that these retrotransposons play important role in genome evolution.
- Publication
Caryologia, 2018, Vol 71, Issue 1, p80
- ISSN
0008-7114
- Publication type
Article
- DOI
10.1080/00087114.2017.1420588