double zone
two rings on an otolith that are close together relative to the size of the calcified stricture and the distance between two annuli. Considered as one annulus. Also called double ring and double mark

Dictionary of ichthyology. 2009.

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  • double mark — double zone (two rings on an otolith that are close together relative to the size of the calcified stricture and the distance between two annuli. Considered as one annulus) …   Dictionary of ichthyology

  • double ring — double zone (two rings on an otolith that are close together relative to the size of the calcified stricture and the distance between two annuli. Considered as one annulus) …   Dictionary of ichthyology

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