Vital Rates (Life History Parameters)
of and E-pattern 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 (8-10 years) | 1.82 m TL | Compagno (2001) based on Tanaka (1980) |
Smallest mature | |||
Largest immature | 2.1-2.2 m TL | 2.1-2.2 m TL | Compagno (2001) |
Sizes at which 10, 50, and 90% are mature (c) | |||
Age at maturity | 8-10 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) | 2-5 | 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 |