Multiple sex chromosomes in teleost fishes from a cytogenetic perspective: state of the art and future challenges

0545031 - ÚŽFG 2022 RIV GB eng J - Journal Article
Sember, Alexandr - Nguyen, Petr - Perez, M. F. - Altmanová, Marie - Ráb, Petr - de Bello Cioffi, M.
Multiple sex chromosomes in teleost fishes from a cytogenetic perspective: state of the art and future challenges.
Philosophical Transactions of the Royal Society B-Biological Sciences. Roč. 376, č. 1833 (2021), č. článku 20200098. ISSN 0962-8436. E-ISSN 1471-2970
R&D Projects: GA ČR(CZ) GJ19-22346Y; GA MŠMT EF15_003/0000460
Institutional support: RVO:67985904
Keywords : chromosome rearrangements * fish * repetitive DNA accumulation
OECD category: Genetics and heredity (medical genetics to be 3)
Impact factor: 6.671, year: 2021
Method of publishing: Open access
https://royalsocietypublishing.org/doi/10.1098/rstb.2020.0098

Despite decades of cytogenetic and genomic research of dynamic sex chromosome evolution in teleost fishes, multiple sex chromosomes have been largely neglected. In this review, we compiled available data on teleost multiple sex chromosomes, identified major trends in their evolution and suggest further trajectories in their investigation. In a compiled dataset of 440 verified records of fish sex chromosomes, we counted 75 multiple sex chromosome systems with 60 estimated independent origins. We showed that male-heterogametic systems created by Y-autosome fusion predominate and that multiple sex chromosomes are over-represented in the order Perciformes. We documented a striking difference in patterns of differentiation of sex chromosomes between male and female heterogamety and hypothesize that faster W sex chromosome differentiation may constrain sex chromosome turnover in female-heterogametic systems. We also found no significant association between the mechanism of multiple sex chromosome formation and percentage of uni-armed chromosomes in teleost karyotypes. Last but not least, we hypothesized that interaction between fish populations, which differ in their sex chromosomes, can drive the evolution of multiple sex chromosomes in fishes. This underlines the importance of broader inter-population sampling in studies of fish sex chromosomes.
Permanent Link: http://hdl.handle.net/11104/0321805