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Table 2 Indirect methods used to calculate mortality rates

From: Modeling the population dynamics of lemon sharks

Method

Relationship

Value

Hoenig (1983) (fish)

l n(Z)=1.46−1.01 l n(t max )

0.167

Hoenig (1983) (cetacean)

l n(Z)=0.941−0.873 l n(t max )

0.154

Hoenig (1983) (combined)

l n(Z)=1.44−0.982 l n(t max )

0.179

Pauly (1980)

l o g(M)=−0.0066−0.279 l o g(L ∞ )

 
 

+0.6543 l o g(K)+0.4634 l o g(T)

0.140

Jensen (1996) (age)

M=1.65/x m

0.138

Jensen (1996) (growth)

M=1.5 K

0.086

Jensen (1996) (Pauly)

M=1.6 K

0.091

  1. Here M and Z represent natural and total mortality, respectively. Similar analysis as [41] and [42]. Note: Life history parameters are based on [36]. K, body growth parameter (0.057); L ∞ , maximum theoretical length (317.65 cm); x m , age at maturity (12 years); t max , maximum age (25); T, mean temperature (27.1°C, [43]).
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