Scomber indicus, a new species of mackerel (Scombridae: Scombrini) from Eastern Arabian Sea

Abdussamad, E M and Sukumaran, Sandhya and Ratheesh, K O Arun and Koya, Mohammed and Koya, K P Said and Rohit, Prathibha and Reader, Sally and Akhilesh, K V and Gopalakrishnan, A (2016) Scomber indicus, a new species of mackerel (Scombridae: Scombrini) from Eastern Arabian Sea. Indian Journal of Fisheries, 61 (3). pp. 1-10.

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    Abstract

    Scomber indicus, a new species of mackerel is described based on the specimens collected from the eastern Arabian Sea. The species is differentiated from its nearest congener Scomber australasicus, in having 29-32 gill rakers on lower limb of first gill arch, posteriormost part of hypohyal blunt, with presence of a pit between the hypohyal and the ceratohyal and also in having a posteriorly directed haemal spine which is deeply curved in the basal region. Genetic differentiation and divergence between the newly described species and the 4 valid species of the genus Scomber viz., S. scombrus, S. japonicus, S. australasicus and S. colias were compared using cytochrome c oxidase 1 and cytochrome b gene sequences. The new species was found closest to S. colias followed by S. japonicus with Kimura 2 parameter (K2P) values of 1.4 and 1.8% respectively. In the phylogenetic tree, sequences of Scomber indicus sp. nov. formed a distinct well separated clade with significant bootstrap values as compared to the sequences of S. scombrus, S. japonicus, S. australasicus and S. colias indicating their distinctiveness and separate species status.

    Item Type: Article
    Uncontrolled Keywords: Arabian Sea; Indian chub mackerel; New species; Scomber indicus
    Subjects: CMFRI Departments > CMFRI-Kochi > Marine Capture > Pelagic Fisheries
    CMFRI > CMFRI-Kochi > Marine Capture > Pelagic Fisheries
    CMFRI-Kochi > Marine Capture > Pelagic Fisheries
    CMFRI-Kochi > Marine Capture > Pelagic Fisheries

    Fish and Fisheries > Fish Taxonomy
    Divisions: CMFRI-Kochi > Marine Capture > Pelagic Fisheries
    Subject Area > CMFRI > CMFRI-Kochi > Marine Capture > Pelagic Fisheries
    CMFRI-Kochi > Marine Capture > Pelagic Fisheries
    Subject Area > CMFRI-Kochi > Marine Capture > Pelagic Fisheries
    Depositing User: Arun Surendran
    Date Deposited: 07 Oct 2016 09:15
    Last Modified: 20 Oct 2016 10:27
    URI: http://eprints.cmfri.org.in/id/eprint/11198

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