Somniosus microcephalus: Population traits

at T = 5 °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 stf f_min f_max date: 2025/05/19
symbol units thinning falsethinning true thinning falsethinning true description
femalemale femalemale femalemale femalemale
f - 0.87601 0.87601 0.915911 0.915911 1 1 1 1 scaled functional response
r 1/d 0 0 0 0 7.18316e-05 7.18316e-05 1.17018e-05 1.17018e-05 spec pop growth rate
t2 d NaN NaN NaN NaN 9649.62 9649.62 59234.1 59234.1 population doubling time
a_b d 1633.47 1633.27 1633.47 1633.27 1633.47 1633.27 1633.47 1633.27 age at birth
t_p d 144910 638.325 73552.7 627.593 52720.7 608.096 52720.7 608.096 time since birth at puberty
S_b - 0.999998 0.999997 0.999998 0.999997 0.999998 0.999997 0.999998 0.999997 survival probability at birth
S_p - 0.99999 0.999984 0.336138 0.378935 0.99999 0.999985 0.328993 0.368379 survival probability at puberty
theta_0b - 0.0116567 0.0138712 0.338581 0.275721 0.110954 0.111136 0.404086 0.349547 frac of ind that is embryo
theta_bp - 0.0116567 0.0138711 0.195114 0.168465 0.0986697 0.0988324 0.226481 0.206975 fraction of individuals that is juvenile
theta_pi - 0.976687 0.972258 0.466305 0.555814 0.790376 0.790032 0.369433 0.443478 frac of ind that is adult
L_bi cm 42.9845 29.3373 22.5749 19.4632 22.9467 18.7696 17.0152 15.96 mean structural length of post-natals
L2_bi cm^2 1968.92 905.003 836.198 520.885 693.043 435.664 525.784 386.082 mean squared structural length of post-natals
L3_bi cm^3 92733.7 28577.6 37359 15900.6 24644.9 11498.4 22090.2 11560.2 mean cubed structural length of post-natals
Ww_bi g 675577 147497 282860 85081.3 201465 66118.9 180581 66474.6 mean wet weight of post-natals
L_pi cm 43.4264 29.674 29.6393 23.683 25.0641 20.3942 23.9437 20.8083 mean structural length of adults
L2_pi cm^2 1991.99 917.437 1172.19 669.273 774.98 485.897 827.582 551.477 mean squared structural length of adults
L3_pi cm^3 93837.8 28982.4 52907.9 20665.3 27692.8 12911.2 35509.1 16869.6 mean cubed structural length of adults
Ww_pi g 683621 149587 400588 110577 226381 74242.9 290277 97005 mean wet weight of adults
R 1/d 0 0.012508 0 0.00878808 0 0.00549326 0 0.00689831 mean reproduction rate of adults
J_X g/d 130.192 39.6204 57.8107 23.8427 52.3126 21.7726 39.6875 19.2948 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 0.0338405 0.0379351 0.00651328 0.00701101 yield of living structure on food
Y_VX_d mol/mol 0.00699478 0.00805293 0.0153729 0.0178924 0.000323225 0.000532799 0.0185555 0.0212252 yield of dead structure on food
Y_EX mol/mol 0 0 0 0 0.242796 0.180202 0.046731 0.0333043 yield of living reserve on food
Y_EX_d mol/mol 0.0439631 0.0335106 0.101022 0.0778469 0.00231905 0.00253095 0.133131 0.100826 yield of dead reserve on food
Y_CX mol/mol 0.776692 0.785382 0.716163 0.735269 0.565495 0.619217 0.634267 0.673639 yield of CO2 on food
Y_HX mol/mol 0.667069 0.674532 0.615083 0.631492 0.485681 0.53182 0.544746 0.578561 yield of H2O on food
Y_OX mol/mol -0.913138 -0.923354 -0.841975 -0.864438 -0.664839 -0.727999 -0.745693 -0.791981 yield of O2 on food
Y_NX mol/mol 0.062975 0.0636796 0.0580673 0.0596164 0.045851 0.0502068 0.0514271 0.0546194 yield of N-waste on food
mu_TX J/mol 437140 442274 402167 413465 315011 346638 354767 377947 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