First Record on Sex Chromosomes in a Species of the Family Cynodontidae: Cynodon gibbus (Agassiz, 1829)
| Autor: | Eliana Feldberg, Leonardo Gusso Goll, Vanessa Susan Pinheiro Figliuolo, Patrik F. Viana, Maria Claudia Gross |
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| Rok vydání: | 2020 |
| Předmět: |
0106 biological sciences
0303 health sciences biology Curimatidae Prochilodontidae biology.organism_classification 010603 evolutionary biology 01 natural sciences Anostomidae Serrasalmidae 03 medical and health sciences Chilodontidae Cynodontidae Evolutionary biology Parodontidae Hemiodontidae Genetics Molecular Biology Genetics (clinical) 030304 developmental biology |
| Zdroj: | Cytogenetic and Genome Research. 160:29-37 |
| ISSN: | 1424-859X 1424-8581 |
| Popis: | The fish family Cynodontidae belongs to the superfamily Curimatoidea, together with the Hemiodontidae, Serrasalmidae, Parodontidae, Prochilodontidae, Chilodontidae, Curimatidae, and Anostomidae. The majority of the species of this superfamily that have been analyzed to date have a diploid chromosome number of 2n = 54. Differentiated sex chromosomes (with female heterogamety) have been observed only in the Prochilodontidae, Parodontidae, and Anostomidae. The present study provides the first description of differentiated sex chromosomes in the cynodontid species Cynodon gibbus, which has a ZZ/ZW system, and shows that repetitive DNA has played a fundamental role in the differentiation of these sex chromosomes. |
| Databáze: | OpenAIRE |
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