Theromyzon tessulatum: 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: 2025/05/22
symbol units thin falsethin truethin falsethin truethin falsethin truedescription
f - 0.559381 0.624781 0.81239 0.81239 1 1 scaled functional response
r 1/d 0 0 0.0281516 0.00871561 0.0386298 0.0124897 spec pop growth rate
t2 d NaN NaN 24.622 79.5294 17.9433 55.4973 population doubling time
a_b d 5.63287 5.57674 5.45935 5.45935 5.38121 5.38121 age at birth
t_p d 395.588 284.317 168.378 168.378 129.574 129.574 time since birth at puberty
S_b - 0.999986 0.999987 0.999987 0.999987 0.999988 0.999988 survival probability at birth
S_p - 0.999924 0.399685 0.999935 0.366312 0.999939 0.345081 survival probability at puberty
theta_0b - 0.0223381 0.26455 0.143384 0.397708 0.188096 0.444498 frac of ind that is embryo
theta_bp - 0.0223441 0.165723 0.122981 0.228541 0.152819 0.243783 fraction of individuals that is juvenile
theta_pi - 0.955318 0.569727 0.733634 0.373751 0.659085 0.311719 frac of ind that is adult
L_bi cm 0.151914 0.117481 0.120994 0.0941554 0.115435 0.0884899 mean structural length of post-natals
L2_bi cm^2 0.0242313 0.0175175 0.0179521 0.0128412 0.0170076 0.0118967 mean squared structural length of post-natals
L3_bi cm^3 0.00396342 0.00293514 0.00303865 0.00223863 0.00296948 0.00219129 mean cubed structural length of post-natals
Ww_bi g 0.0190455 0.0154101 0.0198316 0.0146103 0.02317 0.017098 mean wet weight of post-natals
L_pi cm 0.154482 0.13965 0.133938 0.125937 0.13186 0.124207 mean structural length of adults
L2_pi cm^2 0.0247559 0.0221089 0.0206336 0.0195824 0.0204795 0.0197326 mean squared structural length of adults
L3_pi cm^3 0.00405429 0.00376737 0.0035331 0.00355865 0.00363604 0.00383914 mean cubed structural length of adults
Ww_pi g 0.0194821 0.0197795 0.0230586 0.0232254 0.0283709 0.0299557 mean wet weight of adults
R 1/d 0.66164 0.53929 0.479019 0.458668 0.50142 0.528775 mean reproduction rate of adults
J_X g/d 0.00244286 0.00197248 0.0026284 0.00188011 0.00306518 0.00214407 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 0.0325456 0.0103776 0.0374238 0.0127648 yield of living structure on food
Y_VX_d mol/mol 0.00872382 0.018271 0.000796963 0.0229056 0.000398598 0.024475 yield of dead structure on food
Y_EX mol/mol 0 0 0.179862 0.0573513 0.254583 0.0868354 yield of living reserve on food
Y_EX_d mol/mol 0.0331968 0.0776556 0.00440438 0.126587 0.00271155 0.166497 yield of dead reserve on food
Y_CX mol/mol 0.785052 0.735096 0.62254 0.622898 0.550845 0.555049 yield of CO2 on food
Y_HX mol/mol 0.676134 0.63311 0.53617 0.536478 0.474421 0.478042 yield of H2O on food
Y_OX mol/mol -0.922966 -0.864234 -0.731905 -0.732327 -0.647615 -0.652558 yield of O2 on food
Y_NX mol/mol 0.0636528 0.0596024 0.0504762 0.0505053 0.0446631 0.045004 yield of N-waste on food
mu_TX J/mol 442114 413382 348324 348531 306628 309057 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