Holbrookia maculata: Population traits

at T = 24 °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_min f_max date: 2025/05/23
symbol units thinning falsethinning true thinning falsethinning true description
femalemale femalemale femalemale femalemale
f - 0.408548 0.408548 0.426897 0.426897 1 1 1 1 scaled functional response
r 1/d 0 0 0 0 0.00550557 0.00550557 0.00147416 0.00147416 spec pop growth rate
t2 d NaN NaN NaN NaN 125.899 125.899 470.197 470.197 population doubling time
a_b d 51.19 50.8731 50.9326 50.6236 47.1483 46.9772 47.1483 46.9772 age at birth
t_p d 389.226 309.359 321.781 266.149 85.0645 82.0283 85.0645 82.0283 time since birth at puberty
S_b - 0.999998 0.999998 0.999998 0.999998 0.999998 0.999998 0.999998 0.999998 survival probability at birth
S_p - 0.999973 0.999976 0.820608 0.783065 0.999987 0.999988 0.455613 0.443268 survival probability at puberty
theta_0b - 0.0215291 0.0209343 0.0307639 0.0328273 0.228787 0.228044 0.266063 0.277666 frac of ind that is embryo
theta_bp - 0.02154 0.0209444 0.0275818 0.0286913 0.176514 0.176105 0.164713 0.169663 fraction of individuals that is juvenile
theta_pi - 0.956931 0.958121 0.941654 0.938481 0.594699 0.59585 0.569224 0.552671 frac of ind that is adult
L_bi cm 0.438351 0.462144 0.456949 0.481418 0.781422 0.807786 0.842166 0.867819 mean structural length of post-natals
L2_bi cm^2 0.192211 0.213688 0.208931 0.231993 0.651289 0.700248 0.764409 0.81976 mean squared structural length of post-natals
L3_bi cm^3 0.084306 0.0988519 0.0955813 0.111892 0.57066 0.64084 0.729922 0.819579 mean cubed structural length of post-natals
Ww_bi g 0.250945 0.305136 0.292992 0.355876 3.33157 3.91415 4.26135 5.00586 mean wet weight of post-natals
L_pi cm 0.439331 0.463455 0.458613 0.483691 0.865644 0.897943 0.944627 0.983112 mean structural length of adults
L2_pi cm^2 0.193028 0.214821 0.210357 0.234014 0.770169 0.831509 0.915775 0.995994 mean squared structural length of adults
L3_pi cm^3 0.0848163 0.0995872 0.0965 0.113243 0.702084 0.791182 0.906172 1.03302 mean cubed structural length of adults
Ww_pi g 0.252464 0.307406 0.295808 0.360173 4.09883 4.83242 5.29032 6.30954 mean wet weight of adults
R 1/d 0.00100386 0.00153226 0.00142385 0.00200286 0.015405 0.0169014 0.0198754 0.0220187 mean reproduction rate of adults
J_X g/d 0.0143718 0.0168685 0.0163235 0.019136 0.119196 0.135302 0.139899 0.158394 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 0.109375 0.109375 yield of faeces on food
Y_VX mol/mol 0 0 0 0 0.0263582 0.0260763 0.00769142 0.00762774 yield of living structure on food
Y_VX_d mol/mol 0.00255528 0.00250502 0.00341436 0.00353584 5.66236e-05 5.30503e-05 0.010013 0.010169 yield of dead structure on food
Y_EX mol/mol 0 0 0 0 0.127524 0.133194 0.0372118 0.0389613 yield of living reserve on food
Y_EX_d mol/mol 0.00505075 0.00522748 0.00705191 0.00770998 0.00027395 0.000270973 0.0484439 0.0519416 yield of dead reserve on food
Y_CX mol/mol 0.717453 0.71735 0.715129 0.714496 0.598335 0.593962 0.639653 0.635314 yield of CO2 on food
Y_HX mol/mol 0.76283 0.762721 0.760359 0.759686 0.636179 0.631529 0.680109 0.675497 yield of H2O on food
Y_OX mol/mol -0.910613 -0.910483 -0.907664 -0.90686 -0.759425 -0.753875 -0.811867 -0.806361 yield of O2 on food
Y_NX mol/mol 0.165566 0.165542 0.16503 0.164884 0.138077 0.137068 0.147612 0.146611 yield of N-waste on food
mu_TX J/mol 460365 460294 458861 458445 382266 379341 409334 406450 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