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Research Article 


Chromosomal Studies on Rattus rattus (Linnaeus, 1758) from Ilorin, Kwara State, Nigeria

Olaoluwa John Ademola, Yusuf Mukaila.

Abstract
Despite reports on chromosome polymorphism in Rattus rattus, chromosomal data on its populations from North-Central Nigeria is lacking. This study presents the chromosomal analysis of R. rattus from the University of Ilorin, Ilorin, Nigeria. Four specimens were caught using local traps. The specimens were injected intraperitoneally with 0.04% colchicine (0.01 ml per body weight) and left for 2 hours before being sacrificed. The air-dry method was used for chromosome preparation. 20 metaphase spread were examined and the diploid number of chromosomes obtained ranged from 32-38 with 2n=38 having the modal number represented by 55%. A karyotype formula of 2n=7m + 4sm+27t was found for R. rattus. These results contribute to the chromosomal data of R. rattus and compared with those from other regions in the country.

Key words: Rattus rattus, Chromosome, Karyotype, Kwara State, Nigeria


 
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How to Cite this Article
Pubmed Style

Ademola OJ, Mukaila Y. Chromosomal Studies on Rattus rattus (Linnaeus, 1758) from Ilorin, Kwara State, Nigeria. Equijost. 2020; 7(1): 54-59.


Web Style

Ademola OJ, Mukaila Y. Chromosomal Studies on Rattus rattus (Linnaeus, 1758) from Ilorin, Kwara State, Nigeria. http://www.equijost.com/?mno=91033 [Access: July 27, 2020].


AMA (American Medical Association) Style

Ademola OJ, Mukaila Y. Chromosomal Studies on Rattus rattus (Linnaeus, 1758) from Ilorin, Kwara State, Nigeria. Equijost. 2020; 7(1): 54-59.



Vancouver/ICMJE Style

Ademola OJ, Mukaila Y. Chromosomal Studies on Rattus rattus (Linnaeus, 1758) from Ilorin, Kwara State, Nigeria. Equijost. (2020), [cited July 27, 2020]; 7(1): 54-59.



Harvard Style

Ademola, O. J. & Mukaila, . Y. (2020) Chromosomal Studies on Rattus rattus (Linnaeus, 1758) from Ilorin, Kwara State, Nigeria. Equijost, 7 (1), 54-59.



Turabian Style

Ademola, Olaoluwa John, and Yusuf Mukaila. 2020. Chromosomal Studies on Rattus rattus (Linnaeus, 1758) from Ilorin, Kwara State, Nigeria. Equity Journal of Science and Technology, 7 (1), 54-59.



Chicago Style

Ademola, Olaoluwa John, and Yusuf Mukaila. "Chromosomal Studies on Rattus rattus (Linnaeus, 1758) from Ilorin, Kwara State, Nigeria." Equity Journal of Science and Technology 7 (2020), 54-59.



MLA (The Modern Language Association) Style

Ademola, Olaoluwa John, and Yusuf Mukaila. "Chromosomal Studies on Rattus rattus (Linnaeus, 1758) from Ilorin, Kwara State, Nigeria." Equity Journal of Science and Technology 7.1 (2020), 54-59. Print.



APA (American Psychological Association) Style

Ademola, O. J. & Mukaila, . Y. (2020) Chromosomal Studies on Rattus rattus (Linnaeus, 1758) from Ilorin, Kwara State, Nigeria. Equity Journal of Science and Technology, 7 (1), 54-59.





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