Microtus pennsylvanicus: Population traits

at T = 38.5 °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_min f_max date: 2025/02/13
symbol units thinning falsethinning true thinning falsethinning true description
femalemale femalemale femalemale femalemale
f - 0.420553 0.420553 0.425517 0.425517 1 1 1 1 scaled functional response
r 1/d 0 0 0 0 0.0181138 0.0181138 0.00471248 0.00471248 spec pop growth rate
t2 d NaN NaN NaN NaN 38.2662 38.2662 147.087 147.087 population doubling time
a_b d 10.5265 NaN 10.5265 NaN 10.5265 10.5265 10.5265 10.5265 age at birth
t_x d 207.16 NaN 186.593 NaN 28.9905 36.2593 28.9905 36.2593 time since birth at weaning
t_p d 36.1494 NaN 35.2221 NaN 14.5896 14.5896 14.5896 14.5896 time since birth at puberty
S_b - 1 NaN 1 NaN 1 1 1 1 survival probability at birth
S_x - 0.999999 NaN 0.877258 NaN 1 1 0.460674 0.460674 survival probability at weaning
S_p - 0.998638 NaN 0.772602 NaN 0.999998 0.999996 0.249138 0.218204 survival probability at puberty
theta_0b - 0.00635313 NaN 0.00818031 NaN 0.173614 0.173614 0.211647 0.211647 frac of ind that is embryo
theta_bx - 0.00635309 NaN 0.00760561 NaN 0.143474 0.143474 0.134244 0.134244 fraction of individuals that is baby
theta_xp - 0.118632 NaN 0.106977 NaN 0.194154 0.254459 0.109028 0.137469 fraction of individuals that is juvenile
theta_pi - 0.868662 NaN 0.877237 NaN 0.488758 0.428452 0.545081 0.51664 frac of ind that is adult
L_bi cm 0.705805 NaN 0.71395 NaN 1.29697 1.29697 1.39473 1.39473 mean structural length of post-natals
L2_bi cm^2 0.498188 NaN 0.509765 NaN 1.78161 1.78161 2.06884 2.06884 mean squared structural length of post-natals
L3_bi cm^3 0.351661 NaN 0.364002 NaN 2.55285 2.55285 3.19109 3.19109 mean cubed structural length of post-natals
Ww_bi g 1.74026 NaN 1.81829 NaN 26.5222 26.5222 33.1529 33.1529 mean wet weight of post-natals
L_pi cm 0.70653 NaN 0.714869 NaN 1.52679 1.55824 1.61083 1.62777 mean structural length of adults
L2_pi cm^2 0.499184 NaN 0.511038 NaN 2.34701 2.43816 2.60687 2.65686 mean squared structural length of adults
L3_pi cm^3 0.352689 NaN 0.365325 NaN 3.63097 3.83006 4.23595 4.34719 mean cubed structural length of adults
Ww_pi g 1.74534 NaN 1.8249 NaN 37.723 39.7914 44.0083 45.1639 mean wet weight of adults
R 1/d 0.000693055 NaN 0.000883906 NaN 0.0306295 0.0311157 0.0359783 0.035682 mean reproduction rate of adults
J_X g/d 0.461543 NaN 0.477843 NaN 3.92474 3.92474 4.55749 4.55749 mean ingestion rate of wet food by post-natals
Y_PX mol/mol 0.109375 NaN 0.109375 NaN 0.109375 0.109375 0.109375 0.109375 yield of faeces on food
Y_VX mol/mol 0 NaN 0 NaN 0.0117822 0.0117822 0.00329961 0.00329961 yield of living structure on food
Y_VX_d mol/mol 0.000464136 NaN 0.00057499 NaN 1.98238e-06 1.98238e-06 0.0039777 0.0039777 yield of dead structure on food
Y_EX mol/mol 0 NaN 0 NaN 0.110625 0.110625 0.0309808 0.0309808 yield of living reserve on food
Y_EX_d mol/mol 0.00183272 NaN 0.00229725 NaN 1.8613e-05 1.8613e-05 0.0373475 0.0373475 yield of dead reserve on food
Y_CX mol/mol 0.821704 NaN 0.821171 NaN 0.710582 0.710582 0.753893 0.753893 yield of CO2 on food
Y_HX mol/mol 0.700792 NaN 0.700338 NaN 0.606022 0.606022 0.64296 0.64296 yield of H2O on food
Y_OX mol/mol -0.966057 NaN -0.965431 NaN -0.835414 -0.835414 -0.886334 -0.886334 yield of O2 on food
Y_NX mol/mol 0.0666246 NaN 0.0665815 NaN 0.0576148 0.0576148 0.0611265 0.0611265 yield of N-waste on food
mu_TX J/mol 463132 NaN 462826 NaN 398725 398725 423823 423823 yield of heat on food

Remarks

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