First report of karyological analysis and heteromorphic nucleolar organizer region of Black Surgeonfish (Acanthurus gahhm, Acanthuridae) in Thailand

Authors

  • Sitthisak Jantarat Program of Biology, Department of Science, Faculty of Science and Technology, Prince of Songkla University, Pattani Campus, Thailand
  • Sarun Jumrusthanasan Biology Program, Faculty of Science, Buriram Rajabhat University, Buriram, Thailand
  • Sarawut Kaewsri Biology Program, Faculty of Science, Buriram Rajabhat University, Buriram, Thailand
  • Praween Supanuam Biology Program, Faculty of Science, Ubon Ratchathani Rajabhat University, Ubon Ratchathani, Thailand
  • Alongklod Tanomtong Department of Biology, Faculty of Science, Khon Kaen University, Khon Kaen, Thailand

DOI:

https://doi.org/10.36253/caryologia-853

Keywords:

Acanthurus gahhm, Chromosome, Karyotype, NORs

Abstract

This research was the first report on karyological analysis and heteromorphic nucleolar organizer region of black surgeonfish (Acanthurus gahhm, Acanthuridae) in Thailand. The 10 male and 10 female specimens were collected from Phuket Marine Biological Center, and Phang Nga Coastal Research and Development Center, Andaman Sea, Thailand. Mitotic chromosomes were directly prepared from gill and kidney tissues. The chromosomes were stained by conventional Giemsa staining and Ag-NOR banding techniques. Results showed that the diploid chromosomes number of A. gahhm was 2n=48, the fundamental numbers (NF) was 54 in both male and female. The karyotype consist of 6 large acrocentric, 20 large telocentric, 18 medium telocentric and 4 small telocentric chromosomes. None of strange size chromosomes related to sex was found. The heteromorphic nucleolar organizer regions (NORs) were observed on telomeric short arm of first acrocentric which can defined as 1a1b. There is NOR in 1a and not in 1b. The karyotype formula of black surgeon fish was as follows: 2n (48) = La6+Lt20+Mt18+St4

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References

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Published

2021-07-20

How to Cite

Jantarat, S., Jumrusthanasan, S., Kaewsri, S., Supanuam, P., & Tanomtong, A. (2021). First report of karyological analysis and heteromorphic nucleolar organizer region of Black Surgeonfish (Acanthurus gahhm, Acanthuridae) in Thailand. Caryologia, 74(1), 83–88. https://doi.org/10.36253/caryologia-853

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