Arenicola marina: Population traits

at T = 20 °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: 2025/06/20
symbol units thin falsethin truethin falsethin truethin falsethin truedescription
f - 0.0824106 0.137149 0.568574 0.568574 1 1 scaled functional response
r 1/d 0 0 0.0383378 0.00186884 0.0859674 0.00317054 spec pop growth rate
t2 d NaN NaN 18.08 370.898 8.06291 218.621 population doubling time
a_b d 9.98697 9.24077 7.31159 7.31159 6.65275 6.65275 age at birth
t_j d 722.604 385.937 90.6545 90.6545 55.6931 55.6931 time since birth at metam
t_p d 2399.69 951.621 198.2 198.2 120.436 120.436 time since birth at puberty
S_b - 0.999995 0.999996 0.999998 0.999998 0.999998 0.999998 survival probability at birth
S_j - 0.999969 0.840621 0.999988 0.554586 0.999991 0.417275 survival probability at metam
S_p - 0.97888 0.000706481 0.999729 0.000669096 0.999897 0.000664428 survival probability at puberty
theta_0b - 0.00375539 0.14697 0.24402 0.376978 0.435143 0.474161 frac of ind that is embryo
theta_bj - 0.00378847 0.135728 0.184811 0.281918 0.246032 0.310715 frac of ind between b and j
theta_jp - 0.267819 0.715029 0.547782 0.340145 0.31412 0.214351 frac of ind between j and p
theta_pi - 0.724637 0.00227214 0.0233874 0.000958886 0.0047052 0.000773228 frac of ind that is adult
L_bi cm 0.344827 0.0236815 0.0416582 0.0230023 0.0300472 0.0229524 mean structural length of post-natals
L2_bi cm^2 0.159304 0.00140077 0.00474597 0.00130316 0.00177262 0.00125818 mean squared structural length of post-natals
L3_bi cm^3 0.0794864 0.000594398 0.00133832 0.00114136 0.000281524 0.00114293 mean cubed structural length of post-natals
Ww_bi g 0.0815805 0.000620459 0.00158158 0.00134882 0.000371523 0.00150831 mean wet weight of post-natals
L_pi cm 0.450586 0.474104 0.290511 0.487218 0.26052 0.475729 mean structural length of adults
L2_pi cm^2 0.216894 0.292678 0.0974905 0.452527 0.0753061 0.443156 mean squared structural length of adults
L3_pi cm^3 0.109043 0.213821 0.0386828 0.726161 0.024731 0.761128 mean cubed structural length of adults
Ww_pi g 0.111916 0.223196 0.045714 0.858151 0.0326372 1.00445 mean wet weight of adults
R 1/d 0 12.3033 16.7977 123.368 21.3309 183.272 mean reproduction rate of adults
J_X g/d 0.000590089 5.83927e-06 0.000102222 2.22225e-05 4.99534e-05 3.70527e-05 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 0.501932 0.0959843 0.48449 0.097799 yield of living structure on food
Y_VX_d mol/mol 0.106789 0.234804 9.60489e-05 0.283629 1.75539e-05 0.297342 yield of dead structure on food
Y_EX mol/mol 0 0 0.0912334 0.0174465 0.154884 0.0312648 yield of living reserve on food
Y_EX_d mol/mol 0.00281341 0.0102948 1.74583e-05 0.0515537 5.61172e-06 0.0950556 yield of dead reserve on food
Y_CX mol/mol 0.781022 0.645526 0.297346 0.442011 0.251228 0.369164 yield of CO2 on food
Y_HX mol/mol 0.563638 0.465855 0.214585 0.318985 0.181303 0.266413 yield of H2O on food
Y_OX mol/mol -0.849362 -0.70201 -0.323364 -0.480688 -0.273211 -0.401466 yield of O2 on food
Y_NX mol/mol 0.117153 0.0968289 0.0446019 0.0663017 0.0376843 0.0553746 yield of N-waste on food
mu_TX J/mol 417558 349436 171298 244743 145057 205453 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