Jiradej Manosroi
Materials and Natural Products Research and Development Center (PCRNC), Institute for Science and Technology Research and Development (1ST), Chiang Mai University, Chiang Mai, Thailand
Keravit Petchjul
Department of Fisheries, Faculty of Agriculture, Rajamangala University of Technology, Kalasin Campus, Kalasin, Thailand
Umnat Mevatee
Not Available
Aranya Manosroi
Department of Anatomy, Faculty of Medicine, Chiang Mai University, Chiang Mai, Thailand
ABSTRACT
Thai Red Tilapia is the hybrid fish between Oreochromis niloticus Linn. and O. mossambicus Linn. The chromosomal constitution of this hybrid were investigated using high quality metaphase preparations obtained from their bone marrow. The diploid chromosome of Tilapias consisted of 22 chromosome pairs (2n = 44). However, the morphology of their chromosome types were different. The karyotype of O. niloticus consisted of 18 subtelocentric (st), 26 acrocentric (a) whereas 6 submetacentric (sm), 10 st, 28 a and 2 sm 6 st, 36 a were observed in O. mossambicus and Thai Red Tilapia respectively. The arm number of O. niloticus, O. mossambicus and Thai Red Tilapia were 62, 60 and 52 respectively. The heterochromatic of the short arms of all Tilapias were also observed. The karyotypic differences between O. niloticus, O. mossambicus and the hybrid, Thai Red Tilapia will be useful for strain classification and the improvement of commercial Tilapias production.
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How to cite this article
Jiradej Manosroi, Keravit Petchjul, Umnat Mevatee and Aranya Manosroi, 2003. Karyotype Analysis of the
Hybrid, Thai Red Tilapia (Oreochromis
niloticus Linn. X Oreochromis
mossambicus Linn.). Journal of Biological Sciences, 3: 612-617.
DOI: 10.3923/jbs.2003.612.617
URL: https://scialert.net/abstract/?doi=jbs.2003.612.617
DOI: 10.3923/jbs.2003.612.617
URL: https://scialert.net/abstract/?doi=jbs.2003.612.617
REFERENCES
- Levan, A., K. Fredga and A.A. Sandberg, 1964. Nomenclature for centromeric position on chromosomes. Hereditas, 52: 201-220.
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