Karyotype evolution and species differentiation in the genus Rattus of Manipur, India
Rattus is the most studied genus all over the world but species of the genus are not thoroughly reported from Manipur. The present paper deals with the morphometric, cytotaxonomic and phylogenetic studies of Manipur, India. The different species of Rattus namely Rattus rattus, Rattus brunneusculus,...
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ftjafricanj:oai:ojs.ajol.info:article/126007 2023-05-15T18:04:59+02:00 Karyotype evolution and species differentiation in the genus Rattus of Manipur, India Chingangbam, D Laishram, JM Singh, NB Taibangjam, L Brajakishore, C 2015-11-17 application/pdf http://www.ajol.info/index.php/ajb/article/view/126007 eng eng Academic Journals (Kenya) http://www.ajol.info/index.php/ajb/article/view/126007/115542 http://www.ajol.info/index.php/ajb/article/view/126007 10.4314/ajb.v13i53. Copyright for articles published in this journal is retained by the journal. African Journal of Biotechnology; Vol 13, No 53 (2014) 1684-5315 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article 2015 ftjafricanj 2015-11-29T01:06:45Z Rattus is the most studied genus all over the world but species of the genus are not thoroughly reported from Manipur. The present paper deals with the morphometric, cytotaxonomic and phylogenetic studies of Manipur, India. The different species of Rattus namely Rattus rattus, Rattus brunneusculus, Rattus tanezumi and Rattus nitidus were studied. Berylmys manipulus and Berylmys mackenziei were taken from the genus Berylmys. The studies of the species reveal that the polymorphic chromosomes in the genus Rattus were pair numbers that is, 1, 9, 10 and 13. The change of acrocentrics which are regarded as primitive/ancestral types of chromosomes into either subtelocentric or small metacentrics leads to speciation or simply new species particularly in Manipur. It is generally accepted cytologically that 2n=40 (Berylmys manipulus, B. mackenziei, R. kandianus etc) are derived from the 2n=42 through centric fusion/Robertsonian fusion, but the soft palate studies shows affinity of the species that is, B. manipulus and B. mackenziei from Manipur towards Niviventer. The present study is the first step towards the understanding of the relationship between these two genera-Rattus and Berylmys.Keywords: Rattus, Berylmys, ManipurAfrican Journal of Biotechnology, Vol 13(53) 4733-4744 Article in Journal/Newspaper Rattus rattus AJOL - African Journals Online |
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Open Polar |
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AJOL - African Journals Online |
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ftjafricanj |
language |
English |
description |
Rattus is the most studied genus all over the world but species of the genus are not thoroughly reported from Manipur. The present paper deals with the morphometric, cytotaxonomic and phylogenetic studies of Manipur, India. The different species of Rattus namely Rattus rattus, Rattus brunneusculus, Rattus tanezumi and Rattus nitidus were studied. Berylmys manipulus and Berylmys mackenziei were taken from the genus Berylmys. The studies of the species reveal that the polymorphic chromosomes in the genus Rattus were pair numbers that is, 1, 9, 10 and 13. The change of acrocentrics which are regarded as primitive/ancestral types of chromosomes into either subtelocentric or small metacentrics leads to speciation or simply new species particularly in Manipur. It is generally accepted cytologically that 2n=40 (Berylmys manipulus, B. mackenziei, R. kandianus etc) are derived from the 2n=42 through centric fusion/Robertsonian fusion, but the soft palate studies shows affinity of the species that is, B. manipulus and B. mackenziei from Manipur towards Niviventer. The present study is the first step towards the understanding of the relationship between these two genera-Rattus and Berylmys.Keywords: Rattus, Berylmys, ManipurAfrican Journal of Biotechnology, Vol 13(53) 4733-4744 |
format |
Article in Journal/Newspaper |
author |
Chingangbam, D Laishram, JM Singh, NB Taibangjam, L Brajakishore, C |
spellingShingle |
Chingangbam, D Laishram, JM Singh, NB Taibangjam, L Brajakishore, C Karyotype evolution and species differentiation in the genus Rattus of Manipur, India |
author_facet |
Chingangbam, D Laishram, JM Singh, NB Taibangjam, L Brajakishore, C |
author_sort |
Chingangbam, D |
title |
Karyotype evolution and species differentiation in the genus Rattus of Manipur, India |
title_short |
Karyotype evolution and species differentiation in the genus Rattus of Manipur, India |
title_full |
Karyotype evolution and species differentiation in the genus Rattus of Manipur, India |
title_fullStr |
Karyotype evolution and species differentiation in the genus Rattus of Manipur, India |
title_full_unstemmed |
Karyotype evolution and species differentiation in the genus Rattus of Manipur, India |
title_sort |
karyotype evolution and species differentiation in the genus rattus of manipur, india |
publisher |
Academic Journals (Kenya) |
publishDate |
2015 |
url |
http://www.ajol.info/index.php/ajb/article/view/126007 |
genre |
Rattus rattus |
genre_facet |
Rattus rattus |
op_source |
African Journal of Biotechnology; Vol 13, No 53 (2014) 1684-5315 |
op_relation |
http://www.ajol.info/index.php/ajb/article/view/126007/115542 http://www.ajol.info/index.php/ajb/article/view/126007 10.4314/ajb.v13i53. |
op_rights |
Copyright for articles published in this journal is retained by the journal. |
_version_ |
1766176402648858624 |