Venus verrucosa: Population traits

at T = 21 °C with background hazards for embryo, larva, 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 abj f_minf f_max date: 2025/05/20
symbol units thin falsethin truethin falsethin truethin falsethin truedescription
f - 0.407896 0.410742 0.705371 0.705371 1 1 scaled functional response
r 1/d 0 0 0.00729146 0.00101589 0.00966006 0.00127963 spec pop growth rate
t2 d NaN NaN 95.0628 682.307 71.754 541.679 population doubling time
a_b d 11.4352 11.4253 10.7623 10.7623 10.439 10.439 age at birth
t_j d 17.6753 17.6069 13.5416 13.5416 11.8883 11.8883 time since birth at metam
t_p d 3993.07 3765.44 1299.48 1299.48 1001.16 1001.16 time since birth at puberty
S_b - 1 1 1 1 1 1 survival probability at birth
S_j - 1 0.195581 1 0.135072 1 0.109341 survival probability at metam
S_p - 0.999999 0.0808909 1 0.0805457 1 0.0804128 survival probability at puberty
theta_0b - 0.00185244 0.574671 0.0753687 0.63652 0.0957993 0.660644 frac of ind that is embryo
theta_bj - 0.00185564 0.283784 0.0697875 0.272913 0.0867356 0.263324 frac of ind between b and j
theta_jp - 0.00101262 0.0404608 0.0171497 0.0170596 0.0113659 0.00846888 frac of ind between j and p
theta_pi - 0.995279 0.101084 0.837694 0.0735071 0.806099 0.0675628 frac of ind that is adult
L_bi cm 0.766839 0.0498008 0.158854 0.0258962 0.142352 0.0249361 mean structural length of post-natals
L2_bi cm^2 0.630683 0.023703 0.0449719 0.00518219 0.0372347 0.00473852 mean squared structural length of post-natals
L3_bi cm^3 0.532294 0.0182571 0.0175214 0.00352981 0.0138076 0.00348525 mean cubed structural length of post-natals
Ww_bi g 1.08841 0.0374644 0.049177 0.00990705 0.0491731 0.0124121 mean wet weight of post-natals
L_pi cm 0.76901 0.172624 0.173939 0.0826411 0.158033 0.0789265 mean structural length of adults
L2_pi cm^2 0.6325 0.0992872 0.0496191 0.0250749 0.0417427 0.0232394 mean squared structural length of adults
L3_pi cm^3 0.533828 0.0768144 0.0193395 0.0174473 0.0154876 0.0174986 mean cubed structural length of adults
Ww_pi g 1.09154 0.157626 0.0542798 0.0489689 0.0551562 0.0623179 mean wet weight of adults
R 1/d 0 0 0 0 0 0 mean reproduction rate of adults
J_X g/d 0.00549169 0.000207503 0.000678094 7.75381e-05 0.000796345 0.000100491 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 0.188406 0.0462469 0.167493 0.0443803 yield of living structure on food
Y_VX_d mol/mol 0.0210826 0.0498486 3.81146e-05 0.095753 1.71754e-05 0.0905871 yield of dead structure on food
Y_EX mol/mol 0 0 0.340388 0.0835532 0.429001 0.113672 yield of living reserve on food
Y_EX_d mol/mol 0.022026 0.0524426 6.88608e-05 0.172995 4.39915e-05 0.232022 yield of dead reserve on food
Y_CX mol/mol 0.847516 0.788334 0.361724 0.492077 0.29407 0.409964 yield of CO2 on food
Y_HX mol/mol 0.61492 0.57198 0.262451 0.357029 0.213364 0.297452 yield of H2O on food
Y_OX mol/mol -0.921674 -0.857313 -0.393375 -0.535134 -0.319801 -0.445836 yield of O2 on food
Y_NX mol/mol 0.127127 0.11825 0.0542586 0.0738116 0.0441105 0.0614946 yield of N-waste on food
mu_TX J/mol 449844 418732 191027 260399 152770 214885 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