Characterization of the complete mitochondrial genome of Barilius malabaricus and its phylogenetic implications

Prabhu, Vandana and Singham, Surachandra and Kumar, Rahul G and Gopalakrishnan, A and Nagarajan, M (2020) Characterization of the complete mitochondrial genome of Barilius malabaricus and its phylogenetic implications. Genomics, 112 (3). pp. 2154-2163.

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    Abstract

    Bariliine fishes are important components of the ornamental as well as subsistence fishery sectors in India. Many of the species in the genus Barilius are threatened by habitat loss and therefore need to be met with conservation initiatives. Effective conservation measures, however, require clarification of species identities and resolution of the validity of many species currently treated as synonymous or sub-species. The complete mitochondrial genome data provide better insight into phylogenetic information than the short fragment or single gene based analysis. Thus, we have sequenced the complete mitochondrial genome of Barilius malabaricus, one of the important fish species in the fresh water ornamental sector, for better understanding its phylogenetic status. The 16,519 bp mitochondrial genome consists of 37 genes which classifies as 22 tRNA, 13 protein coding and 2 ribosomal RNA genes and a control region. Overall, the mitochondrial genome bears the typical gene order and composition as in other fishes. Further, the COI, cytochrome b and 16S rRNA gene sequences revealed that, B. malabaricus is genetically closer to B. canarensis and B. bakeri compared to other Barilius species. Also, the Barilius species of west flowing rivers in Western Ghats were consistently recovered as a clade distinct from other species. We therefore suggest to retain the genus name Barilius for the species from the Western Ghats until a comprehensive analysis based on both morphological and molecular markers reveals the relationship between species now variously placed in the genera Barilius and Opsarius in greater detail.

    Item Type: Article
    Uncontrolled Keywords: Barilius, Opsarius, Cyprinidae, fish phylogeny, mitochondrial genome, COI
    Subjects: Fish Biotechnology
    Fish Genetics
    Divisions: CMFRI-Kochi > Marine Biotechnology
    Subject Area > CMFRI > CMFRI-Kochi > Marine Biotechnology
    CMFRI-Kochi > Marine Biotechnology
    Subject Area > CMFRI-Kochi > Marine Biotechnology
    Depositing User: Arun Surendran
    Date Deposited: 16 Dec 2019 09:57
    Last Modified: 25 Jun 2020 06:15
    URI: http://eprints.cmfri.org.in/id/eprint/13976

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