Dobriyal index
cube root of average gonad weight in grammes, used as a measure of reproductive capacity, determination of spawning season, sexual maturity and frequency of spawning (Dobriyal et al., 1999). Unlike the gonadosomatic index (q.v.), it does not involve body weight which is dependent on feeding intensity, food availability and environmental and physiological stress

Dictionary of ichthyology. 2009.

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