Morphometric Analysis of Craniodental Characters of the House Rat, Rattus rattus (Rodentia: Muridae) in Peninsular Malaysia
Rattus rattus which is believed to be native to India is easily found in all continents of the world. With the absence of R. rattus from lineage I and the presence of lineage IV in Southeast Asia, little is known about how rodent morphology varies biogeographically. We evaluate the skull morphometri...
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Penerbit Universiti Kebangsaan Malaysia
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ftunivmalaya:oai:eprints.um.edu.my:24078 2023-05-15T18:05:06+02:00 Morphometric Analysis of Craniodental Characters of the House Rat, Rattus rattus (Rodentia: Muridae) in Peninsular Malaysia Mohamad Ikbal, Nurul Huda Pathmanathan, Dharini Bhassu, Subha Simarani, Khanom Omar, Hasmahzaiti 2019 http://eprints.um.edu.my/24078/ https://doi.org/10.17576/jsm-2019-4810-05 unknown Penerbit Universiti Kebangsaan Malaysia Mohamad Ikbal, Nurul Huda and Pathmanathan, Dharini and Bhassu, Subha and Simarani, Khanom and Omar, Hasmahzaiti (2019) Morphometric Analysis of Craniodental Characters of the House Rat, Rattus rattus (Rodentia: Muridae) in Peninsular Malaysia. Sains Malaysiana, 48 (10). pp. 2103-2111. ISSN 0126-6039 Q Science (General) QA Mathematics QH Natural history Article PeerReviewed 2019 ftunivmalaya https://doi.org/10.17576/jsm-2019-4810-05 2020-03-24T16:16:39Z Rattus rattus which is believed to be native to India is easily found in all continents of the world. With the absence of R. rattus from lineage I and the presence of lineage IV in Southeast Asia, little is known about how rodent morphology varies biogeographically. We evaluate the skull morphometrics in the population of R. rattus in Peninsular Malaysia and examine the intraspecific variation of the skull by assessing 20 craniodental characters of 130 R. rattus specimens. After observing the correlation matrix, highly correlated characters were removed and the remaining 14 craniodental characters were analysed using the conventional morphometrics method via univariate and multivariate statistics. We assessed the impact of age, sex and geographical factors (latitude, longitude and precipitation) on craniodental size. Male and female specimens were analysed separately since statistically significant sexual dimorphism was present. Males showed greater craniodental measurements compared to females. Three distinct age groups (C2, C3 and C4) were visible in the principal component analysis (PCA) and canonical variate analysis (CVA) plots for male and female specimens. Ages C2 and C3 shared similarities in craniodental measurements while C4 showed variability compared to C2 and C3. None of the geographical factors studied showed statistical significance for both male and female R. rattus. The results obtained from this study could potentially be a yardstick to observe if similar variations in craniodental traits are present in R. rattus from other countries in the Southeast Asian region. © 2019 Penerbit Universiti Kebangsaan Malaysia. All rights reserved. Article in Journal/Newspaper Rattus rattus University of Malaya: UM Institutional Repository Sains Malaysiana 48 10 2103 2111 |
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University of Malaya: UM Institutional Repository |
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Q Science (General) QA Mathematics QH Natural history |
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Q Science (General) QA Mathematics QH Natural history Mohamad Ikbal, Nurul Huda Pathmanathan, Dharini Bhassu, Subha Simarani, Khanom Omar, Hasmahzaiti Morphometric Analysis of Craniodental Characters of the House Rat, Rattus rattus (Rodentia: Muridae) in Peninsular Malaysia |
topic_facet |
Q Science (General) QA Mathematics QH Natural history |
description |
Rattus rattus which is believed to be native to India is easily found in all continents of the world. With the absence of R. rattus from lineage I and the presence of lineage IV in Southeast Asia, little is known about how rodent morphology varies biogeographically. We evaluate the skull morphometrics in the population of R. rattus in Peninsular Malaysia and examine the intraspecific variation of the skull by assessing 20 craniodental characters of 130 R. rattus specimens. After observing the correlation matrix, highly correlated characters were removed and the remaining 14 craniodental characters were analysed using the conventional morphometrics method via univariate and multivariate statistics. We assessed the impact of age, sex and geographical factors (latitude, longitude and precipitation) on craniodental size. Male and female specimens were analysed separately since statistically significant sexual dimorphism was present. Males showed greater craniodental measurements compared to females. Three distinct age groups (C2, C3 and C4) were visible in the principal component analysis (PCA) and canonical variate analysis (CVA) plots for male and female specimens. Ages C2 and C3 shared similarities in craniodental measurements while C4 showed variability compared to C2 and C3. None of the geographical factors studied showed statistical significance for both male and female R. rattus. The results obtained from this study could potentially be a yardstick to observe if similar variations in craniodental traits are present in R. rattus from other countries in the Southeast Asian region. © 2019 Penerbit Universiti Kebangsaan Malaysia. All rights reserved. |
format |
Article in Journal/Newspaper |
author |
Mohamad Ikbal, Nurul Huda Pathmanathan, Dharini Bhassu, Subha Simarani, Khanom Omar, Hasmahzaiti |
author_facet |
Mohamad Ikbal, Nurul Huda Pathmanathan, Dharini Bhassu, Subha Simarani, Khanom Omar, Hasmahzaiti |
author_sort |
Mohamad Ikbal, Nurul Huda |
title |
Morphometric Analysis of Craniodental Characters of the House Rat, Rattus rattus (Rodentia: Muridae) in Peninsular Malaysia |
title_short |
Morphometric Analysis of Craniodental Characters of the House Rat, Rattus rattus (Rodentia: Muridae) in Peninsular Malaysia |
title_full |
Morphometric Analysis of Craniodental Characters of the House Rat, Rattus rattus (Rodentia: Muridae) in Peninsular Malaysia |
title_fullStr |
Morphometric Analysis of Craniodental Characters of the House Rat, Rattus rattus (Rodentia: Muridae) in Peninsular Malaysia |
title_full_unstemmed |
Morphometric Analysis of Craniodental Characters of the House Rat, Rattus rattus (Rodentia: Muridae) in Peninsular Malaysia |
title_sort |
morphometric analysis of craniodental characters of the house rat, rattus rattus (rodentia: muridae) in peninsular malaysia |
publisher |
Penerbit Universiti Kebangsaan Malaysia |
publishDate |
2019 |
url |
http://eprints.um.edu.my/24078/ https://doi.org/10.17576/jsm-2019-4810-05 |
genre |
Rattus rattus |
genre_facet |
Rattus rattus |
op_relation |
Mohamad Ikbal, Nurul Huda and Pathmanathan, Dharini and Bhassu, Subha and Simarani, Khanom and Omar, Hasmahzaiti (2019) Morphometric Analysis of Craniodental Characters of the House Rat, Rattus rattus (Rodentia: Muridae) in Peninsular Malaysia. Sains Malaysiana, 48 (10). pp. 2103-2111. ISSN 0126-6039 |
op_doi |
https://doi.org/10.17576/jsm-2019-4810-05 |
container_title |
Sains Malaysiana |
container_volume |
48 |
container_issue |
10 |
container_start_page |
2103 |
op_container_end_page |
2111 |
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1766176530100125696 |