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


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Authors

  • E. M. Abdussamad CMFRI, Kochi
  • Sandhya Sukumaran CMFRI, Kochi
  • Arun K. O. Ratheesh Central Island Agricultural Research Institute, Port Blair, Andaman, India
  • K. Mohamed Koya CMFRI, Veraval
  • K. P. S. Koya Central Marine Fisheries Research Institute, Calicut
  • Prathibha Rohit CMFRI, Mangalore
  • Sally Reader 3he Australian Museum, Sydney, Australia
  • K. V. Akhilesh CMFRI, Mumbai
  • A. Gopalakrishnan Central Marine Fisheries Research Institute, PB No. 1603. Cochin-682 018, Kerala, India

https://doi.org/10.21077/ijf.2016.63.3.59184-01

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.

 

Author Biographies

  • E. M. Abdussamad, CMFRI, Kochi
    Principal Scientist,
    Pelagic Fisheries Division,
    CMFRI, PB No. 1603,
    Ernakulam North P.O.
    Kochi-18
  • Sandhya Sukumaran, CMFRI, Kochi

    Central Marine Fisheries Research Institute,

    PB No. 1603.

    Cochin-682 018,

    Kerala,

    India

  • Arun K. O. Ratheesh, Central Island Agricultural Research Institute, Port Blair, Andaman, India
    Central Island Agricultural Research Institute, Port Blair, Andaman, India
  • K. Mohamed Koya, CMFRI, Veraval

    Central Marine Fisheries Research Institute,

    PB No. 1603.

    Cochin-682 018,

    Kerala,

    India

  • K. P. S. Koya, Central Marine Fisheries Research Institute, Calicut
    Central Marine Fisheries Research Institute, PB No. 1603. Cochin-682 018, Kerala, India
  • Prathibha Rohit, CMFRI, Mangalore

    Central Marine Fisheries Research Institute,

    PB No. 1603.

    Cochin-682 018,

    Kerala, India

  • Sally Reader, 3he Australian Museum, Sydney, Australia

    The Australian Museum,

    Sydney,

    Australia

  • K. V. Akhilesh, CMFRI, Mumbai

    Central Marine Fisheries Research Institute,

    PB No. 1603.

    Cochin-682 018,

    Kerala,

    India

  • A. Gopalakrishnan, Central Marine Fisheries Research Institute, PB No. 1603. Cochin-682 018, Kerala, India

    Central Marine Fisheries Research Institute,

    PB No. 1603.

    Cochin-682 018,

    Kerala,

    India

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Submitted

2016-06-15

Published

2016-09-30

Issue

Section

Articles

How to Cite

Abdussamad, E. M., Sukumaran, S., K. O. Ratheesh, A., Koya, K. M., Koya, K. P. S., Rohit, P., Reader, S., Akhilesh, K. V., & Gopalakrishnan, A. (2016). Scomber indicus, a new species of mackerel (Scombridae: Scombrini) from Eastern Arabian Sea. Indian Journal of Fisheries, 63(3). https://doi.org/10.21077/ijf.2016.63.3.59184-01