Mirounga angustirostris

COMPLETE = 2.5; MRE = 0.053; SMAE = 0.053; SMSE = 0.005

Data & predictions

data prd RE symbol units description
252 267.9 0.06325 tg d gestation time
26 26.06 0.002332 tx d time since birth at weaning
1095 1152 0.05233 tp d time since birth at puberty for females
4745 4788 0.009095 am d life span
360 358.1 0.005227 Li cm ultimate total length for females
500 476 0.04802 Lim cm ultimate total length for males
3.75e+04 4.387e+04 0.1699 Wwb g wet weight at birth
1.403e+05 4.955e+04 0.6468 Wwx g wet weight at weaning
9e+05 8e+05 0.1111 Wwi g ultimate wet weight for females
2.3e+06 2.342e+06 0.01824 Wwim g ultimate wet weight for males
0.00274 0.002975 0.08593 Ri #/d maximum reprod rate
see figure 0.04568 tL_m time since birth vs. standard length
0.02 0.05092 1.546 psd.v cm/d energy conductance
0.8 0.87 0.08754 psd.kap - allocation fraction to soma
0.95 0.95 0 psd.kap_R - reproduction efficiency
18 15.66 0.13 psd.p_M J/d.cm^3 vol-spec som maint
0.002 0.0006359 0.682 psd.k_J 1/d maturity maint rate coefficient
0.8 0.7979 0.00257 psd.kap_G - growth efficiency
0.3 0.3194 0.06463 psd.k - maintenance ratio

stx parameters at 20.0°C

symbol units value free description
T_ref K 293.1 0 Reference temperature
T_A K 8000 0 Arrhenius temperature
z - 58.5 1 zoom factor for females
F_m l/d.cm^2 6.5 0 {F_m}, max spec searching rate
kap_X - 0.8 0 digestion efficiency of food to reserve
kap_P - 0.1 0 faecation efficiency of food to faeces
v cm/d 0.05092 1 energy conductance
kap - 0.87 1 allocation fraction to soma
kap_R - 0.95 0 reproduction efficiency
p_M J/d.cm^3 15.66 1 [p_M], vol-spec somatic maint
p_T J/d.cm^2 0 0 {p_T}, surf-spec somatic maint
k_J 1/d 0.0006359 1 maturity maint rate coefficient
E_G J/cm^3 7865 1 [E_G], spec cost for structure
E_Hb J 1.779e+07 1 maturity at birth
E_Hx J 2.136e+07 1 maturity at weaning
E_Hp J 3.142e+08 1 maturity at puberty
h_a 1/d^2 1.95e-10 1 Weibull aging acceleration
s_G - 0.1 0 Gompertz stress coefficient
t_0 d 0.1 0 time at start development
del_M - 0.1634 1 shape coefficient
f - 1 0 scaled functional response for 0-var data
f_tL - 0.882 1 scaled functional response for tL data
z_m - 77.76 1 zoom factor for males