Chromosomal organization of retrotransposon Rex1 in Astyanax species (Characiformes, Characidae)

Author(s)

Pessenda, Gabriela ^[1] ; Piscor, Diovani ^[1] ; da Silva, Edson L. ^{[1, 2]} ; Centofante, Liano ^[3] ; Parise-Maltempi, Patricia P. ^[1]

Affiliation

^[1] Univ Estadual Paulista Julio de Mesquita Filho UN, Dept Biol, Lab Citogenet, Inst Biociencias, Rio Claro - Brazil

^[2] Inst Fed Educ Ciencia & Tecnol Piaui IFPI, Lab Biol, Picos - Brazil

^[3] Univ Fed Mato Grosso UFMT, Dept Biol & Zool, Lab Genet Anim, Inst Biociencias, Cuiaba - Brazil

• Document type: Journal article
• Source: Caryologia; v. 71, n. 1, p. 80-84, 2018.
• Web of Science Citations: 1

Abstract

The cytogenetic studies of retrotranposons Rex have been characterized in several fish groups, including species of the Astyanax genus. This group presents an extensive variability in their karyotype, with diploid numbers of 2n = 52, 50, 48, 46 and 36 chromosomes. Thus, the aim of this study was to evaluate the distribution of the retrotransposable element Rex1, in six Astyanax species, with different diploid numbers. The species analyzed were Astyanax altiparanae (2n = 50), Astyanax asuncionensis (2n = 50), Astyanax eigenmanniorum (2n = 50), Astyanax marionae (2n = 48), Astyanax fasciatus (2n = 46) and Astyanax schubarti (2n = 36). Rex1 was dispersed in the Astyanax species, suggesting that these retrotransposons play important role in genome evolution. (AU)

• FAPESP's process: 11/07457-0 - STUDY OF THE ORGANIZATION AND CHROMOSOME MAPPING OF TRANSPOSABLE ELEMENT Rex1 IN SPECIES OF THE GENUS Astyanax BAIRD & GIRARD, 1854 (CHARACIFORMES: CHARACIDAE) FROM DIFFERENT RIVER BASINS
• Grantee: Gabriela Pessenda
• Support Opportunities: Scholarships in Brazil - Scientific Initiation