Empirical standard mass equation for Salmo marmoratus.

Total length ( LT) (range 24-1000 mm; mean ± s.e. = 170·21 ± 0·36 mm) and mass ( W) (range 0·10-9590 g; mean ± s.e. = 76·03 ± 0·87 g) of 36 460 specimens of marble trout Salmo marmoratus were used to compute a standard mass ( Ws) equation for this species by means of the empirical percentile (EmP) method. The EmP Ws equation calculated was: log10 Ws = −5·208 + 3·202 log10 LT− 0·046 (log10 LT)2 ( LT range 90-570 mm) and it is valid throughout the species' area of distribution across Europe. [ABSTRACT FROM AUTHOR]