Natrix natrix (Grass snake):  

Implied properties for this entry

Model:  std  

Energy investment, cumulated over the embryo period (left), and allocation during ontogeny

Exploding sectors mean dissipation; numbers denote fractions of mobilized reserve. Endpoints are somatic maintenance S, growth G, maturity maintenance J, maturity or reproduction R. Growth is splitted into overhead and flux fixed in tissue. Reproduction overhead is not idicated, since it is pays at conversion of buffer to eggs/foetuses. The change in reserve equals assimilation p_A minus mobilization p_C. Wet weight W_w and total energy E_W exclude the reproduction buffer in adults. Pies link to budget pages.

Implied properties at typical temperature (26 deg. C) and abundant food
symbol value units description
z 6.755 -zoom factor
c_T 1.72866 -Temperature Correction factor
s_Hbp 0.0202864 -maturity ratio
s_HLbp 0.806821 -maturity density ratio at f=1
s_s 0.0181466 -supply stress
E_0 32073.7 Jinitial reserve
Wd_0 1.39375 ginitial dry weight
a_b 86.0085 dage at birth
a_p 673.835 dage at puberty
a_99 4391.92 dage at length 0.99 * L_i
Wd_b 0.947829 gdry weight at birth
Wd_p 37.6966 gdry weight at puberty
Wd_i 238.794 gultimate dry weight
L_b 1.06953 cmstructural length at birth
L_p 3.65077 cmstructural length at puberty
L_i 6.755 cmultimate structural length
W_dWm 235.846 gwet weight at maximum growth
dWm 0.10791 g/dmaximum growth in wet weight
R_i 0.241461 1/dultimate reproduction rate
N_i 468.203 #life time reproductive output
del_Wb 0.00396922 -birth weight as fraction of maximum weight
del_Wp 0.157862 -puberty weight as fraction of maximum weight
del_V 0.387234 -fraction of max weight that is structure
r_B 0.00102947 1/dvon Bertalanffy growth rate
E_m 10924.7 J/cm^3[E_m], reserve capacity
t_starve 247.057 dmaximum survival time when starved
t_E 146.629 dmaximum reserve residence time
xi_WE 22.2024 kJ/ gwhole-body energy density of dry biomass (no reprod buffer)
eb_min_G 0.155807 -scaled reserve density whereby growth ceases at birth
eb_min_R 0.102933 -scaled reserve density whereby maturation ceases at birth
J_Ob 0.000619576 mol/dO2 flux at birth
J_Op 0.0109645 mol/dO2 flux at puberty
J_Oi 0.037646 mol/dultimate O2 flux