![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEi-aruDXafN0T28r9e7P1LPbwEJWE6gDj-p8cSHBCoj_xVgaRP5C04bih6-aviu4r7OzNUzzZ7I4vpHJj2A-1U9qdJRgmn9wfy5RAtZC8_sppOp_ToPKLFXlw-pOhJrWuG8NXSRTBRAUDM/s400/Z+Estim+Data.jpg)
From a Beverton-Holt equation L_inf = - a/b and Z/K = -(1+b)/b, where a is y intercept, b is slope, Z is instantaneous coefficient of total mortality, K is growth coefficient. Lengths on the table (left) are mean lengths. a = 11.906 and b - - 0.2349 (R square = 1.0) after regression on SPSS. Thereby, L_inf = 50.69 cm, Z/K = 3.26, and if K value is known, S can be calculated by equation S = exp (-Z).
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEheFlzsUaKNWmd9OjnHTahqfgZZ_xfjHSR9ZLQm_8fz9isBR1Fmznx2-whFauOipg8FKv92oUeH2UjI12k0a-fi8RIt6gMz2DRy08GhD3ghb7vQio8OE5vSt7Y8AlfzrcI97MoLyN2Tu1U/s400/Z+Estim+Regression.jpg)
revised on Apr. 3 2007
by Yeongha Jung