Microtus breweri: Population traits

at T = 37.5 °C with background hazards for embryo, baby, juv, adult: 0, 0, 0, 0 1/d

Ln survival probability as function of age, with (dashed) and without (solid) thinning at max (red) and min (blue) scaled functional response for females.
Ln survivor function of the stable age distribution as function of age, with (dashed) and without (solid) thinning at max (red) and min (blue) scaled functional response for females.
model stx f_minf f_max date: 2025/11/21
symbol units thin falsethin truethin falsethin truethin falsethin truedescription
f - 0.447182 NaN 0.723591 NaN 1 1 scaled functional response
r 1/d 0 0 0.00400195 NaN 0.00759961 NaN spec pop growth rate
t2 d NaN NaN 173.202 NaN 91.2083 NaN population doubling time
a_b d 12.5591 NaN 12.5591 NaN 12.5591 NaN age at birth
t_x d 36.1121 NaN 20.0611 NaN 16.6117 NaN time since birth at weaning
t_p d 21.1934 NaN 13.6729 NaN 11.748 NaN time since birth at puberty
S_b - 1 NaN 1 NaN 1 NaN survival probability at birth
S_x - 0.999995 NaN 0.999996 NaN 0.999997 NaN survival probability at weaning
S_p - 0.99994 NaN 0.999991 NaN 0.999995 NaN survival probability at puberty
theta_0b - 0.0150754 NaN 0.05331 NaN 0.0933199 NaN frac of ind that is embryo
theta_bx - 0.0150753 NaN 0.0506964 NaN 0.0848243 NaN fraction of individuals that is baby
theta_xp - 0.0282713 NaN 0.0290893 NaN 0.0256884 NaN fraction of individuals that is juvenile
theta_pi - 0.941578 NaN 0.866904 NaN 0.796167 NaN frac of ind that is adult
L_bi cm 0.633442 NaN 0.978545 NaN 1.23221 NaN mean structural length of post-natals
L2_bi cm^2 0.401326 NaN 0.967585 NaN 1.57483 NaN mean squared structural length of post-natals
L3_bi cm^3 0.254311 NaN 0.964001 NaN 2.06258 NaN mean cubed structural length of post-natals
Ww_bi g 2.12264 NaN 12.4238 NaN 35.9482 NaN mean wet weight of post-natals
L_pi cm 0.635042 NaN 1.00499 NaN 1.30309 NaN mean structural length of adults
L2_pi cm^2 0.403279 NaN 1.01216 NaN 1.71989 NaN mean squared structural length of adults
L3_pi cm^3 0.256101 NaN 1.02128 NaN 2.294 NaN mean cubed structural length of adults
Ww_pi g 2.13758 NaN 13.1619 NaN 39.9816 NaN mean wet weight of adults
R 1/d 0.00126992 NaN 0.0047731 NaN 0.00889389 NaN mean reproduction rate of adults
J_X g/d 0.504084 NaN 1.96654 NaN 4.42339 NaN mean ingestion rate of wet food by post-natals
Y_PX mol/mol 0.109375 NaN 0.109375 NaN 0.109375 NaN yield of faeces on food
Y_VX mol/mol 0 NaN 0.00196176 NaN 0.00354361 NaN yield of living structure on food
Y_VX_d mol/mol 0.000619819 NaN 0.000204211 NaN 0.000135919 NaN yield of dead structure on food
Y_EX mol/mol 0 NaN 0.0233208 NaN 0.0582172 NaN yield of living reserve on food
Y_EX_d mol/mol 0.00455359 NaN 0.0024276 NaN 0.00223298 NaN yield of dead reserve on food
Y_CX mol/mol 0.819043 NaN 0.798007 NaN 0.764508 NaN yield of CO2 on food
Y_HX mol/mol 0.698523 NaN 0.680583 NaN 0.652013 NaN yield of H2O on food
Y_OX mol/mol -0.962929 NaN -0.938198 NaN -0.898814 NaN yield of O2 on food
Y_NX mol/mol 0.0664089 NaN 0.0647033 NaN 0.0619872 NaN yield of N-waste on food
mu_TX J/mol 461584 NaN 449362 NaN 429850 NaN yield of heat on food

Remarks

  • Reprod-code O applies. Sex ratio is assumed to be 1:1. Parameters of male and female are the same.
  • Buffer handling rule: release each egg as soon as reproduction buffer allows
  • Weights of adults do not include reproduction buffer