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Karyotypes and Sex Chromosomes in Two Australian Native Freshwater Fishes, Golden Perch (Macquaria ambigua) and Murray Cod (Maccullochella peelii) (Percichthyidae)
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SYSNO ASEP 0510276 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Karyotypes and Sex Chromosomes in Two Australian Native Freshwater Fishes, Golden Perch (Macquaria ambigua) and Murray Cod (Maccullochella peelii) (Percichthyidae) Author(s) Shams, F. (AU)
Dyer, F. (AU)
Thompson, R. (AU)
Duncan, R. P. (AU)
Thiem, J. D. (AU)
Majtánová, Zuzana (UZFG-Y) RID, ORCID
Ezaz, T. (AU)Article number 4244 Source Title International Journal of Molecular Sciences. - : MDPI
Roč. 20, č. 17 (2019)Number of pages 14 s. Publication form Online - E Language eng - English Country CH - Switzerland Keywords sex determination ; florescence in situ hybridisation (FISH) ; comparative genomic hybridistaion (CGH) Subject RIV EB - Genetics ; Molecular Biology OECD category Genetics and heredity (medical genetics to be 3) Method of publishing Open access Institutional support UZFG-Y - RVO:67985904 UT WOS 000486888400176 EID SCOPUS 85071781994 DOI 10.3390/ijms20174244 Annotation Karyotypic data from Australian native freshwater fishes are scarce, having been described from relatively few species. Golden perch (Macquaria ambigua) and Murray cod (Maccullochella peelii) are two large-bodied freshwater fish species native to Australia with significant indigenous, cultural, recreational and commercial value. The arid landscape over much of these fishes' range, coupled with the boom and bust hydrology of their habitat, means that these species have potential to provide useful evolutionary insights, such as karyotypes and sex chromosome evolution in vertebrates. Here we applied standard and molecular cytogenetic techniques to characterise karyotypes for golden perch and Murray cod. Both species have a diploid chromosome number 2n = 48 and a male heterogametic sex chromosome system (XX/XY). While the karyotype of golden perch is composed exclusively of acrocentric chromosomes, the karyotype of Murray cod consists of two submetacentric and 46 subtelocentric/acrocentric chromosomes. We have identified variable accumulation of repetitive sequences (AAT)(10) and (CGG)(10) along with diverse methylation patterns, especially on the sex chromosomes in both species. Our study provides a baseline for future cytogenetic analyses of other Australian freshwater fishes, especially species from the family Percichthyidae, to better understand their genome and sex chromosome evolution. Workplace Institute of Animal Physiology and Genetics Contact Jana Zásmětová, knihovna@iapg.cas.cz, Tel.: 315 639 554 Year of Publishing 2020 Electronic address https://www.mdpi.com/1422-0067/20/17/4244
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