Vipera aspis: Population traits

at T = 20 °C with background hazards for embryo, juv, adult: 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 std f_minf f_max date: 2023/03/16
symbol units thin falsethin truethin falsethin truethin falsethin truedescription
f - 0.700237 0.766842 0.883421 0.883421 1 1 scaled functional response
r 1/d 0 0 0.000800357 0.000158495 0.00109133 0.000246845 spec pop growth rate
t2 d NaN NaN 866.047 4373.31 635.137 2808.03 population doubling time
a_b d 179.395 177.441 174.601 174.601 172.314 172.314 age at birth
t_p d 2634.47 1615.82 1144.61 1144.61 938.941 938.941 time since birth at puberty
S_b - 0.999995 0.999995 0.999995 0.999995 0.999995 0.999995 survival probability at birth
S_p - 0.999962 0.537395 0.999968 0.499167 0.99997 0.469832 survival probability at puberty
theta_0b - 0.0214693 0.103324 0.13158 0.188254 0.171943 0.245318 frac of ind that is embryo
theta_bp - 0.0214764 0.0747149 0.114447 0.127791 0.142496 0.159355 fraction of individuals that is juvenile
theta_pi - 0.957054 0.821961 0.753974 0.683955 0.685561 0.595327 frac of ind that is adult
L_bi cm 3.07849 3.16641 3.08705 3.25774 3.13881 3.33831 mean structural length of post-natals
L2_bi cm^2 9.58472 10.3932 10.1636 11.4403 10.7391 12.4387 mean squared structural length of post-natals
L3_bi cm^3 30.0618 34.8669 35.0334 42.0946 39.1456 49.6911 mean cubed structural length of post-natals
Ww_bi g 75.3466 92.3859 101.613 122.094 123.358 156.589 mean wet weight of post-natals
L_pi cm 3.11101 3.30588 3.29836 3.55501 3.43202 3.77808 mean structural length of adults
L2_pi cm^2 9.73982 11.0939 11.266 13.0535 12.3434 14.9897 mean squared structural length of adults
L3_pi cm^3 30.6374 37.6315 39.5903 49.0681 46.1721 61.6406 mean cubed structural length of adults
Ww_pi g 76.7891 99.7112 114.83 142.32 145.5 194.245 mean wet weight of adults
R 1/d 0 0.00113699 0.00161628 0.00287312 0.0026168 0.00456851 mean reproduction rate of adults
J_X g/d 0.544538 0.646637 0.728486 0.819988 0.871312 1.0092 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 0.0384897 0.00813643 0.0490305 0.0121541 yield of living structure on food
Y_VX_d mol/mol 0.00746338 0.015156 0.000710746 0.0186516 0.000391856 0.0219235 yield of dead structure on food
Y_EX mol/mol 0 0 0.0731484 0.015463 0.105477 0.0261466 yield of living reserve on food
Y_EX_d mol/mol 0.0112428 0.0250025 0.00135075 0.0354467 0.000842983 0.0471631 yield of dead reserve on food
Y_CX mol/mol 0.708434 0.691004 0.631252 0.660503 0.597092 0.636381 yield of CO2 on food
Y_HX mol/mol 0.753241 0.734708 0.671177 0.702279 0.634857 0.67663 yield of H2O on food
Y_OX mol/mol -0.899166 -0.877043 -0.801204 -0.838331 -0.757847 -0.807714 yield of O2 on food
Y_NX mol/mol 0.163485 0.159462 0.145674 0.152424 0.13779 0.146857 yield of N-waste on food
mu_TX J/mol 454607 443389 404816 423667 382588 407974 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