Donax vittatus: Population traits

at T = 15 °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: 2025/05/22
symbol units thin falsethin truethin falsethin truethin falsethin truedescription
f - 0.232343 0.242657 0.621329 0.621329 1 1 scaled functional response
r 1/d 0 0 0.0172935 0.00240135 0.0279955 0.00363052 spec pop growth rate
t2 d NaN NaN 40.0814 288.649 24.7593 190.922 population doubling time
a_b d 3.93548 3.90709 3.33658 3.33658 3.08894 3.08894 age at birth
t_j d 12.9682 12.4388 5.34375 5.34375 3.66922 3.66922 time since birth at metam
t_p d 2485.36 1953.57 374.483 374.483 234.51 234.51 time since birth at puberty
S_b - 1 1 1 1 1 1 survival probability at birth
S_j - 1 0.678014 1 0.455398 1 0.344805 survival probability at metam
S_p - 0.999998 0.290217 1 0.28372 1 0.282295 survival probability at puberty
theta_0b - 0.0011331 0.159579 0.0559384 0.341481 0.0826798 0.416757 frac of ind that is embryo
theta_bj - 0.00113728 0.132705 0.0529329 0.23526 0.075994 0.254402 frac of ind between b and j
theta_jp - 0.00261027 0.159829 0.0304021 0.0736634 0.0135572 0.0240876 frac of ind between j and p
theta_pi - 0.995119 0.547887 0.860727 0.349595 0.827769 0.304753 frac of ind that is adult
L_bi cm 0.2731 0.0961723 0.0999659 0.0483949 0.0952544 0.046608 mean structural length of post-natals
L2_bi cm^2 0.0787344 0.0219272 0.01618 0.00833267 0.0151272 0.00820989 mean squared structural length of post-natals
L3_bi cm^3 0.0231851 0.00624893 0.00355894 0.00324506 0.00337712 0.00378611 mean cubed structural length of post-natals
Ww_bi g 0.025517 0.00690531 0.00451613 0.00411784 0.00483898 0.005425 mean wet weight of post-natals
L_pi cm 0.274064 0.138646 0.107963 0.0764244 0.103679 0.0739469 mean structural length of adults
L2_pi cm^2 0.0790298 0.0334853 0.0177169 0.0154467 0.0167306 0.015454 mean squared structural length of adults
L3_pi cm^3 0.0232724 0.00958286 0.00390298 0.00610833 0.00374187 0.00724149 mean cubed structural length of adults
Ww_pi g 0.025613 0.0105894 0.00495271 0.00775119 0.00536162 0.0103761 mean wet weight of adults
R 1/d 0 0 0 0 0 0 mean reproduction rate of adults
J_X g/d 0.000291024 8.46235e-05 0.000161192 8.27784e-05 0.000242946 0.000131469 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 0.38182 0.0941374 0.389156 0.104553 yield of living structure on food
Y_VX_d mol/mol 0.0291637 0.0710972 4.11269e-05 0.186822 1.4138e-05 0.206318 yield of dead structure on food
Y_EX mol/mol 0 0 0.102693 0.0253188 0.168454 0.0452581 yield of living reserve on food
Y_EX_d mol/mol 0.00293313 0.00746801 1.10613e-05 0.0502468 6.11994e-06 0.0893092 yield of dead reserve on food
Y_CX mol/mol 0.858528 0.81206 0.40606 0.5341 0.332995 0.445187 yield of CO2 on food
Y_HX mol/mol 0.62291 0.589194 0.294619 0.387519 0.241606 0.323008 yield of H2O on food
Y_OX mol/mol -0.933649 -0.883115 -0.44159 -0.580834 -0.362132 -0.484141 yield of O2 on food
Y_NX mol/mol 0.128779 0.121809 0.060909 0.080115 0.0499492 0.066778 yield of N-waste on food
mu_TX J/mol 456305 432844 225082 290459 185262 243052 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