Some Aspects of the Orbital and Ocular Morphometry of the African Giant Rat (Cricetomys gambianus, Waterhouse) | ||
Journal of Veterinary Anatomy | ||
Article 2, Volume 4, Issue 1, April 2011, Pages 11-18 PDF (422.69 K) | ||
DOI: 10.21608/jva.2011.45161 | ||
Authors | ||
M. A. Olude1; J. O. Olopade2; O. O. Igado2; O. A. Mustapha1; A. K. Akinloye1 | ||
1Department of Veterinary Anatomy, College of Veterinary Medicine, Federal University of Agriculture, Abeokuta, Nigeria | ||
2Department of Veterinary Anatomy, Faculty of Veterinary Medicine, University of Iba- dan, Nigeria | ||
Abstract | ||
This work was designed to investigate some aspects of the ocular and orbital morphometric characteristics of the African giant rat (Cricetomys gambianus, Waterhouse). 16 African giant rats consisting of 8 males and 8 female rats were euthanized; the eyeballs were enucleated and their skulls macerated to give 18 morphometric parameters. Student t-test and Pearson’s correlation studies were used to analyze the obtained values. Correlation studies showed significance in the left orbit- al height as correlated against the right orbital index. The eyeball weight for right and left eyeballs were 0.16 g and 0.15 g.The mean eyeball circumference (antero- posterior and medio-lateral) measurements were 2.23 ± 0.01cm and 2.02 ± 0.06 cm for the left and 2.06 ± 0.04 cm and 2.13 ± 0.03 cm for the right eyeball respectively. The mean right orbital length, right orbital height, left orbital height and the intercanthi width were 2.09 ± 0.02 cm, 1.21 ± 0.03 cm, 1.23 ± 0.03 cm and 0.93± 0.03 cm respectively but were all statistically higher (p< 0.05) in males than females exhibiting sexual dimorphism. | ||
Keywords | ||
Cricetomys gambianus Waterhouse; Ocular; orbital; morphometric parameters; Sexual dimorphism | ||
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