Strontium to calcium (Sr/Ca) ratio in otolith as a tool for stock discrimination of oilsardine and mackerel

Prema, D and Valsala, K K and Kripa, V and Nandakumar, A and Krishnakumar, P K and Singh, V V and Asha, P S and Sulochanan, Bindu and Rohit, Prathibha and Ghosh, Shubhadeep and Rajagopalan, M and Kizhakudan, Joe K and Hemasankari, P and Ganga, U and Veena, S and Bhat, G S and Umesh, H Rane and Anilkumar, P S and Bhint, H M and Basha, A Ahmed Kamal and Lavanya, S (2012) Strontium to calcium (Sr/Ca) ratio in otolith as a tool for stock discrimination of oilsardine and mackerel. Marine Fisheries Information Service; Technical and Extension Series (213). pp. 9-10.

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    Abstract

    Otoliths are found in the membranous labyrinth of the inner ear of teleost fish and serve mainly in balancing the organism. They are composed of calcium carbonate and are deposited rhythmically as aragonite crystals within a protein matrix. They have long been used in fish aging studies. Recently, changes in the strontium (Sr): calcium (Ca) ratios in otoliths have received increasing attention, as these provide a method of reconstructing environmental history of the fish. Strontium is a calcium analogue sharing a similar crystal ionic radius and can substitute for Ca in the aragonite lattice of otoliths.

    Item Type: Article
    Uncontrolled Keywords: Strontium to calcium (Sr/Ca) ratio; otolith; stock discrimination; oilsardine; mackerel
    Subjects: Pelagic Fisheries
    Divisions: CMFRI-Karwar
    CMFRI-Kochi > Fishery Environment
    Subject Area > CMFRI > CMFRI-Kochi > Fishery Environment
    CMFRI-Kochi > Fishery Environment
    Subject Area > CMFRI-Kochi > Fishery Environment
    Depositing User: Arun Surendran
    Date Deposited: 16 Jul 2013 10:11
    Last Modified: 09 Sep 2015 15:54
    URI: http://eprints.cmfri.org.in/id/eprint/9304

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