Vital Rates (Life History Parameters)
of and Epattern for the Salmon shark Lamna ditropis Hubbs & Follett, 1947
Parameter  Female  Male  References 

Largest specimens  ~3.05 m TL, annectotal accounts mention 3.7  4.3 m TL  Compagno (2001)  
Size at maturity  221 m TL (810 years)  1.82 m TL  Compagno (2001) based on Tanaka (1980) 
Smallest mature  
Largest immature  2.12.2 m TL  2.12.2 m TL  Compagno (2001) 
Sizes at which 10, 50, and 90% are mature (c)  
Age at maturity  810 years; 
5.0 yr; 
Compagno (2001)
based on Tanaka (1980); Goldman and Musick, Fish. Bull. 104:278–292 (2006) 
Longevity estimate  > 20 years  >27 years  Compagno (2001) 
Gestation time estimate  9 months  Compagno (2001)  
Reproductive cycle  1 year  Compagno (2001)  
Littersize (# of pups per litter)  25  Compagno (2001)  
Birth size estimate  0.60 m TL  Compagno (2001)  
Elasticity pattern using alpha = 9 yr, Abar = 12.34 yr from LHT or Leslie matrix 
Normalized Elasticities: 
Using alpha = 7.5 yr (mean value in Goldman
and Musick 2006), Assuming Abar/alpha = 1.3 (i.e. Abar = 9.75 yr), 

Parameter  Female  Male  References 