Phylogenetic relationships of Malayan and Malagasy pygmy shrews of the genus suncus (soricomorpha: soricidae) inferred from mitochondrial cytochrome B gene sequences

Hashim, Rosli and Ruedi, M. and Omar, H. and Adamson, E.A.S. and Bhassu, S. and Goodman, S.M. and Soarimalala, V. (2011) Phylogenetic relationships of Malayan and Malagasy pygmy shrews of the genus suncus (soricomorpha: soricidae) inferred from mitochondrial cytochrome B gene sequences. Raffles Bulletin of Zoology, 59 (2). pp. 237-243. ISSN 0217-2445

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Official URL: http://rmbr.nus.edu.sg/rbz/biblio/592/59rbz237-243...

Abstract

This study used a portion of the mitochondrial cytochrome b gene to investigate the phylogenetic relationships of Suncus pygmy shrews and to help clarify the taxonomic status of the Malayan pygmy shrew (S. malayanus) and the Malagasy pygmy shrew (S. madagascariensis). Phylogenetic reconstructions were performed using neighbour-joining and Bayesian analysis methods and revealed that S. malayanus is related to, but distinct from S. etruscus. The K2P-corrected genetic distance among the Malaysian taxon and other pygmy shrews for the cytochrome b gene was between 6.1 and 8.5%, supporting recognition that S. malayanus represents a distinct species from the geographically widespread S. etruscus species complex. A close (1.5% K2P distance) sister-group relationship was revealed between S. etruscus from Sri Lanka and S. madagascariensis from Madagascar, which has been considered an island endemic, and suggests that these animals are not specifically distinct. The Malagasy population of this shrew most probably was translocated to the island by human intervention, with the lineage originating from Southeast Asia or the Indian subcontinent.

Item Type: Article
Additional Information: Institute of Biological Sciences, Faculty of Science Building, University of Malaya, 50603 Kuala Lumpur, MALAYSIA
Uncontrolled Keywords: Crocidurinae, Cytochrome b, Genetic distance, Mitochondrial dna, Phylogenetic relationships, Suncus, Molecular phylogenetics, Mammalia, Insectivora, Bootstrap, Evolution, Origin, East
Subjects: Q Science > QH Natural history > QH301 Biology
Divisions: Faculty of Science > Institute of Biological Sciences
Depositing User: Miss Malisa Diana
Date Deposited: 04 Sep 2013 01:55
Last Modified: 31 May 2019 05:05
URI: http://eprints.um.edu.my/id/eprint/8345

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