Luminous cod roe

From: Paw Dalgaard (pad@dfu.min.dk)
Date: Thu Mar 09 2006 - 09:28:51 PST

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    To list members and others with interest in bioluminescence,

    In February 2006 a luminous cod roe was found in Denmark. The cod roe
    contained small granules with a diameter of about 0.2 centimeter and
    these granules were luminous as shown on
    www.difres.dk/micro/luminous-cod-roe.htm.

    I hope someone can explain this phenomenon with light being produced
    within cod roe. Interestingly the luminous granules in the cod roe did
    not contain luminous bacteria. Thus luminescence in the cod roe, in this
    case, is not due to high concentrations of Photobacterium phosphoreum or
    Vibrio logei although these luminous bacteria are regularly found in
    luminous seafoods (See examples at www.difres.dk/micro/pd.htm
    <http://www.difres.dk/micro/pd.htm> ).

    Information about the nature of the luminescence in cod roe or about
    other similar cases of luminous cod roe is most welcome.

    With best regards

    Paw Dalgaard, Senior scientist

    Danish Institute for Fisheries Research (DIFRES)

    Department of Seafood Research

    Ministry of Food, Agriculture and Fisheries

    DTU, Building 221, 2800 Kgs. Lyngby, Denmark

    e-mail: pad@difres.dk

    phone office: +45-45252566

    phone lab.: +45-45254913

    phone dept.: +45-45883322

     

     



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