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The Nucleus

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Chromosomal characteristics of Taolor's stream frog (Limnonectes taylori) (Amphibia, Anura) from Thailand

  • Sumalee PhimphanEmail author
  • S. Aiumsumang
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Abstract

The somatic chromosomal architecture of the Taolor's stream frog (Limnonectes taylori) is described in relation with the location of nucleolus organizer region (NOR) and C-banding pattern. The 10 male and 10 female samples collected from Phitsanulok and Phayao province, Northern Thailand, were used for the study. Chromosome preparations were prepared from bone marrow following standard protocol. The results show that both male and female constitute the diploid chromosome number 2n = 22, and fundamental numbers = 44. No cytologically distinguishable sex chromosomes could be identified. L. taylori had the NORs adjacent to the subcentromeric on the long arm of chromosome pair 11. The C-positive heterochromatin blocks are distributed in the centromere of most chromosomes. The large heterochromatic blocks were found on short arm chromosome pair 7. The karyotype formula of L. taylori was comprised of 2n(diploid)22 = Lm4 + Lsm4 + Mm4 + Msm2 + Sm8.

Keywords

Limnonectes taylori Karyotype Chromosome 

Notes

Acknowledgements

The authors are grateful to Phetchabun Rajabhat University and Prof. Dr. Alongklod Tanomtong for his valuable suggestions.

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Copyright information

© Archana Sharma Foundation of Calcutta 2019

Authors and Affiliations

  1. 1.Biology Program, Faculty of Science and TechnologyPhetchabun Rajabhat UniversityPhetchabunThailand

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