Cytogenetic characterization of the genus Astyanax hybrids as an experimental model study

• Grant number: 15/12902-4
• Support Opportunities: Scholarships in Brazil - Scientific Initiation
• Start date: December 01, 2015
• End date: November 30, 2016
• Field of knowledge: Biological Sciences - Genetics - Animal Genetics
• Principal Investigator: Fábio Porto-Foresti
• Grantee: Caio Augusto Gomes Goes
• Host Institution: Faculdade de Ciências (FC). Universidade Estadual Paulista (UNESP). Campus de Bauru. Bauru , SP, Brazil

Abstract

Human interference has contributed to a significant increase in the occurrence of hybrid fish through breeding techniques, commonly used in the marketing of these animals. Among the main objectives of artificial hybridization is the search for a production of animals with better genetic performance, but its production can cause potential genetic risks, as fertile lineages, which may ultimately contaminate gene banks of the parental species. The identification and differentiation of hybrid species are essential for a better management of these animals. The use of cytogenetic techniques is one of the initial steps in this process, which is effective for both verification of ploidy levels and morphology of the chromosomes, such as the origin of parental chromosome complements of the resulting product in the hybridization. Given the great importance of the genus Astyanax as a model for studies on the variability of karyotype and cytogenetic markers, this paper aims to describe cytogenetically first of its kind hybrid individuals to obtain information on the karyotype and distribution of cytogenetic markers in hybrid individuals, these important contributions to the study of hybrid fish, genus Astyanax and validation of these hybrids as an experimental model study.

Scientific publications

(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)

GOMES GOES, CAIO AUGUSTO; DANIEL, SANDRO NATAL; PIVA, LUCAS HENRIQUE; YASUI, GEORGE SHIGUEKI; ARTONI, ROBERTO FERREIRA; HASHIMOTO, DIOGO TERUO; FORESTI, FAUSTO; PORTO-FORESTI, FABIO. Cytogenetic markers as a tool for characterization of hybrids of Astyanax Baird & Girard, 1854 and Hyphessobrycon Eigenmann, 1907. COMPARATIVE CYTOGENETICS, v. 14, n. 2, p. 231-242, MAY 27 2020. (15/12902-4)