Raja brachyura: Population traits

at T = 12 °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: 2025/02/12
symbol units thin falsethin truethin falsethin truethin falsethin truedescription
f - 0.555244 0.970561 0.985281 0.985281 1 1 scaled functional response
r 1/d 0 0 0.00104914 7.48604e-06 0.00106911 1.46921e-05 spec pop growth rate
t2 d NaN NaN 660.684 92591.9 648.342 47178.4 population doubling time
a_b d 247.412 228.607 228.168 228.168 227.739 227.739 age at birth
t_p d 4068.58 1832.97 1806.85 1806.85 1781.87 1781.87 time since birth at puberty
S_b - 0.999113 0.999286 0.999289 0.999289 0.999293 0.999293 survival probability at birth
S_p - 0.994962 0.452768 0.996334 0.450291 0.996361 0.447873 survival probability at puberty
theta_0b - 0.0633234 0.324918 0.222608 0.328493 0.225539 0.331951 frac of ind that is embryo
theta_bp - 0.0632114 0.21771 0.174977 0.219154 0.176558 0.220529 fraction of individuals that is juvenile
theta_pi - 0.873465 0.457373 0.602415 0.452353 0.597903 0.44752 frac of ind that is adult
L_bi cm 5.15672 4.68925 4.67398 4.6861 4.67299 4.68325 mean structural length of post-natals
L2_bi cm^2 29.1463 29.3895 26.5365 29.4521 26.5692 29.5163 mean squared structural length of post-natals
L3_bi cm^3 175.386 229.354 176.666 231.298 177.461 233.251 mean cubed structural length of post-natals
Ww_bi g 304.991 525.613 408.33 534.601 413.643 543.683 mean wet weight of post-natals
L_pi cm 5.37197 5.83852 5.35771 5.85285 5.36678 5.86715 mean structural length of adults
L2_pi cm^2 30.9086 40.8835 32.6607 41.174 32.7999 41.4636 mean squared structural length of adults
L3_pi cm^3 187.311 332.701 224.213 337.402 226.014 342.108 mean cubed structural length of adults
Ww_pi g 325.729 762.456 518.224 779.837 526.815 797.418 mean wet weight of adults
R 1/d 0 0.00448543 0.00139438 0.00468141 0.00151435 0.00487513 mean reproduction rate of adults
J_X g/d 0.845749 1.4907 1.3664 1.51653 1.38852 1.54254 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 0.135646 0.00114176 0.136638 0.00222162 yield of living structure on food
Y_VX_d mol/mol 0.0980442 0.138251 0.0216265 0.137497 0.0210014 0.136763 yield of dead structure on food
Y_EX mol/mol 0 0 0.177873 0.00149719 0.18185 0.00295674 yield of living reserve on food
Y_EX_d mol/mol 0.0724517 0.178581 0.0283589 0.1803 0.0279507 0.182017 yield of dead reserve on food
Y_CX mol/mol 0.666119 0.530758 0.487586 0.527425 0.483946 0.524167 yield of CO2 on food
Y_HX mol/mol 0.572103 0.455846 0.418768 0.452984 0.415641 0.450186 yield of H2O on food
Y_OX mol/mol -0.78314 -0.624 -0.573243 -0.620081 -0.568963 -0.616251 yield of O2 on food
Y_NX mol/mol 0.0540097 0.0430345 0.039534 0.0427642 0.0392389 0.0425001 yield of N-waste on food
mu_TX J/mol 377040 299905 275613 297975 273503 296088 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