Arvicanthis niloticus: Population traits

at T = 38.2 °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: 2022/12/20
symbol units thin falsethin truethin falsethin truethin falsethin truedescription
f - 0.436312 0.441458 0.720729 0.720729 1 1 scaled functional response
r 1/d 0 0 0.00964941 0.0033673 0.015634 0.00418024 spec pop growth rate
t2 d NaN NaN 71.8331 205.847 44.3359 165.815 population doubling time
a_b d 16.3389 16.3389 16.3389 16.3389 16.3389 16.3389 age at birth
t_x d 311.662 264.067 59.3485 59.3485 44.7118 44.7118 time since birth at weaning
t_p d 48.2932 47.2364 27.3132 27.3132 22.9628 22.9628 time since birth at puberty
S_b - 1 1 1 1 1 1 survival probability at birth
S_x - 1 0.758011 1 0.511428 1 0.423994 survival probability at weaning
S_p - 0.999165 0.592359 0.999997 0.278956 0.999999 0.218515 survival probability at puberty
theta_0b - 0.0057082 0.00955197 0.14588 0.173599 0.225431 0.281183 frac of ind that is embryo
theta_bx - 0.00570816 0.00818667 0.124601 0.115031 0.174612 0.167954 fraction of individuals that is baby
theta_xp - 0.103152 0.0879116 0.247839 0.1408 0.214951 0.123468 fraction of individuals that is juvenile
theta_pi - 0.885432 0.89435 0.48168 0.57057 0.385006 0.427395 frac of ind that is adult
L_bi cm 0.73075 0.73888 1.04046 1.07978 1.18849 1.28178 mean structural length of post-natals
L2_bi cm^2 0.534102 0.546111 1.11621 1.20263 1.52089 1.79559 mean squared structural length of post-natals
L3_bi cm^3 0.390439 0.403739 1.22537 1.36843 2.05782 2.66466 mean cubed structural length of post-natals
Ww_bi g 4.19896 4.38844 20.9699 23.418 48.0637 62.2374 mean wet weight of post-natals
L_pi cm 0.732088 0.740722 1.17505 1.19337 1.47552 1.57689 mean structural length of adults
L2_pi cm^2 0.535953 0.548669 1.38213 1.42501 2.19569 2.50399 mean squared structural length of adults
L3_pi cm^3 0.392365 0.406412 1.62728 1.70261 3.29395 4.00059 mean cubed structural length of adults
Ww_pi g 4.21967 4.4175 27.8478 29.1369 76.9355 93.4404 mean wet weight of adults
R 1/d 0.000393755 0.000653131 0.0171117 0.0181137 0.0314538 0.038906 mean reproduction rate of adults
J_X g/d 0.714322 0.738998 2.466 2.65691 4.66197 5.50403 mean ingestion rate of wet food by post-natals
Y_PX mol/mol 0.109375 0.109375 0.109375 0.109375 0.109375 0.109375 yield of faeces on food
Y_VX mol/mol 0 0 0.00479487 0.00173431 0.00690093 0.00202377 yield of living structure on food
Y_VX_d mol/mol 0.000192999 0.000280935 9.94559e-07 0.00174628 3.42136e-07 0.0025036 yield of dead structure on food
Y_EX mol/mol 0 0 0.07726 0.027945 0.154281 0.0452447 yield of living reserve on food
Y_EX_d mol/mol 0.0018826 0.00277269 1.60254e-05 0.0281379 7.64901e-06 0.0559719 yield of dead reserve on food
Y_CX mol/mol 0.821908 0.821004 0.747912 0.768732 0.674727 0.726015 yield of CO2 on food
Y_HX mol/mol 0.700967 0.700195 0.637859 0.655615 0.575443 0.619184 yield of H2O on food
Y_OX mol/mol -0.966297 -0.965234 -0.879301 -0.903779 -0.79326 -0.853558 yield of O2 on food
Y_NX mol/mol 0.0666412 0.0665679 0.0606415 0.0623296 0.0547076 0.0588661 yield of N-waste on food
mu_TX J/mol 463238 462713 420202 432310 377516 407385 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