Dipturus batis: Population traits

at T = 9.8 °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_min f_max date: 2025/05/23
symbol units thinning falsethinning true thinning falsethinning true description
femalemale femalemale femalemale femalemale
f - 0.323946 0.323946 0.398179 0.398179 1 1 1 1 scaled functional response
r 1/d 0 0 0 0 0.000485364 0.000485364 4.81053e-05 4.81053e-05 spec pop growth rate
t2 d NaN NaN NaN NaN 1428.1 1428.1 14409 14409 population doubling time
a_b d 523.519 531.068 511.498 518.148 474.587 477.983 474.587 477.983 age at birth
t_p d 21625.7 NaN 8438.64 15172.2 3688.39 4201.48 3688.39 4201.48 time since birth at puberty
S_b - 0.999997 0.999997 0.999998 0.999997 0.999998 0.999998 0.999998 0.999998 survival probability at birth
S_p - 0.999986 0.999983 0.409452 0.427284 0.999991 0.999989 0.317149 0.325152 survival probability at puberty
theta_0b - 0.0122054 0.0129481 0.229662 0.21119 0.205747 0.207063 0.432604 0.422075 frac of ind that is embryo
theta_bp - 0.0122099 0.012953 0.145951 0.137072 0.163449 0.164222 0.237617 0.234609 fraction of individuals that is juvenile
theta_pi - 0.975585 0.974099 0.624387 0.651738 0.630803 0.628716 0.32978 0.343316 frac of ind that is adult
L_bi cm 8.14741 7.27579 6.92154 6.47708 6.05681 5.83681 5.90433 5.85808 mean structural length of post-natals
L2_bi cm^2 68.7251 54.6753 61.674 52.1196 50.8895 46.5674 71.3451 66.8678 mean squared structural length of post-natals
L3_bi cm^3 589.571 417.569 608.82 459.736 542.403 466.601 1290.71 1106.77 mean cubed structural length of post-natals
Ww_bi g 1418.78 939.869 1661.32 1166.55 2897.33 2268.22 6894.51 5380.16 mean wet weight of post-natals
L_pi cm 8.22481 7.34681 8.08442 7.43422 7.06587 6.80104 8.66845 8.45624 mean structural length of adults
L2_pi cm^2 69.5363 55.352 75.1897 62.2891 62.8318 57.4983 119.584 109.597 mean squared structural length of adults
L3_pi cm^3 596.851 423.022 749.32 554.854 680.117 585.703 2213.79 1856.66 mean cubed structural length of adults
Ww_pi g 1436.3 952.142 2044.71 1407.9 3632.95 2847.2 11825.3 9025.53 mean wet weight of adults
R 1/d 0 0 0.00040987 0 0.00056209 0 0.00471785 0.00363198 mean reproduction rate of adults
J_X g/d 1.34831 0.953959 1.48725 1.11775 3.08198 2.50811 4.32082 3.60149 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 0.109375 0.109375 yield of faeces on food
Y_VX mol/mol 0 0 0 0 0.0854199 0.0902957 0.0143699 0.0147831 yield of living structure on food
Y_VX_d mol/mol 0.0124726 0.012983 0.0285531 0.0295243 8.78619e-05 0.000104387 0.0348082 0.0362933 yield of dead structure on food
Y_EX mol/mol 0 0 0 0 0.370864 0.348646 0.0623892 0.05708 yield of living reserve on food
Y_EX_d mol/mol 0.0175423 0.0162393 0.0493612 0.0453916 0.000381466 0.000403053 0.151125 0.140134 yield of dead reserve on food
Y_CX mol/mol 0.796064 0.796798 0.751757 0.754531 0.401332 0.417338 0.580838 0.594159 yield of CO2 on food
Y_HX mol/mol 0.683707 0.684337 0.645654 0.648036 0.344687 0.358434 0.498857 0.510299 yield of H2O on food
Y_OX mol/mol -0.935913 -0.936775 -0.883823 -0.887084 -0.471836 -0.490654 -0.682877 -0.698539 yield of O2 on food
Y_NX mol/mol 0.0645458 0.0646052 0.0609533 0.0611782 0.0325404 0.0338382 0.0470949 0.0481751 yield of N-waste on food
mu_TX J/mol 448741 449195 423638 425309 221591 231195 324732 332617 yield of heat on food

Remarks

  • Reprod-code O applies. Sex ratio is assumed to be 1:1. Parameters of male and female differ.
  • Buffer handling rule: release each egg as soon as reproduction buffer allows
  • Weights of adults do not include reproduction buffer