Chionoecetes opilio: Population traits

at T = 5 °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_min f_max date: 2025/05/23
symbol units thinning falsethinning true thinning falsethinning true description
femalemale femalemale femalemale femalemale
f - 0.229948 0.229948 0.28344 0.28344 1 1 1 1 scaled functional response
r 1/d 0 0 0 0 0.00583027 0.00583027 0.000767197 0.000767197 spec pop growth rate
t2 d NaN NaN NaN NaN 118.888 118.888 903.48 903.48 population doubling time
a_b d 61.4554 56.9468 59.3666 54.969 48.0323 44.6852 48.0323 44.6852 age at birth
t_j d 967.035 600.158 773.783 488.901 238.84 167.773 238.84 167.773 time since birth at metam
t_p d 14677.1 4771.68 7402.21 3567.99 1506.77 1023.42 1506.77 1023.42 time since birth at puberty
S_b - 0.999988 0.999994 0.999989 0.999995 0.999994 0.999997 0.999994 0.999997 survival probability at birth
S_j - 0.999931 0.999965 0.717028 0.613145 0.999969 0.999985 0.41574 0.312419 survival probability at metam
S_p - 0.996706 0.999218 0.0130772 0.012896 0.999801 0.999936 0.0127227 0.0126757 survival probability at puberty
theta_0b - 0.00618162 0.00500944 0.242987 0.320885 0.244021 0.22905 0.478012 0.544422 frac of ind that is embryo
theta_bj - 0.00620432 0.00502372 0.207364 0.254418 0.184674 0.176836 0.307991 0.312561 frac of ind between b and j
theta_jp - 0.0912909 0.0479038 0.515754 0.394741 0.383536 0.304268 0.20048 0.130174 frac of ind between j and p
theta_pi - 0.896323 0.942063 0.0338947 0.0299558 0.187768 0.289846 0.0135177 0.0128424 frac of ind that is adult
L_bi cm 0.935384 1.58545 0.0992894 0.106543 0.180905 0.262955 0.0834438 0.086155 mean structural length of post-natals
L2_bi cm^2 1.0607 2.97464 0.0351571 0.061388 0.0666262 0.148325 0.017638 0.0235668 mean squared structural length of post-natals
L3_bi cm^3 1.29183 5.94407 0.0373271 0.113767 0.0404659 0.132035 0.0191765 0.0396027 mean cubed structural length of post-natals
Ww_bi g 1.41919 6.87045 0.0418631 0.135622 0.0578147 0.221524 0.027398 0.066444 mean wet weight of post-natals
L_pi cm 1.02482 1.66814 0.669527 0.841569 0.435606 0.530582 0.521798 0.571413 mean structural length of adults
L2_pi cm^2 1.17445 3.14091 0.65857 1.26276 0.234568 0.37413 0.463354 0.634526 mean squared structural length of adults
L3_pi cm^3 1.43211 6.27789 0.821573 2.5668 0.158392 0.348342 0.720033 1.38581 mean cubed structural length of adults
Ww_pi g 1.57329 7.2563 0.921409 3.0599 0.226299 0.584437 1.02873 2.32506 mean wet weight of adults
R 1/d 0 6.50539 0 0.672391 0 0 0 2.29312 mean reproduction rate of adults
J_X g/d 0.00261835 0.011688 9.77807e-05 0.00028261 0.000690471 0.00250794 0.000157188 0.00035077 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 0.34169 0.306946 0.0935957 0.0866181 yield of living structure on food
Y_VX_d mol/mol 0.0959626 0.0823283 0.180257 0.155646 0.000191503 0.000108821 0.224675 0.197722 yield of dead structure on food
Y_EX mol/mol 0 0 0 0 0.146491 0.208037 0.0401269 0.0587067 yield of living reserve on food
Y_EX_d mol/mol 0.00946042 0.0128309 0.0219045 0.0299005 8.2102e-05 7.37552e-05 0.0963237 0.134009 yield of dead reserve on food
Y_CX mol/mol 0.785202 0.795466 0.688463 0.705078 0.40217 0.37546 0.435904 0.413569 yield of CO2 on food
Y_HX mol/mol 0.566218 0.573619 0.496458 0.50844 0.290009 0.270748 0.314335 0.29823 yield of H2O on food
Y_OX mol/mol -0.853907 -0.865069 -0.748704 -0.766772 -0.43736 -0.408313 -0.474046 -0.449757 yield of O2 on food
Y_NX mol/mol 0.11778 0.11932 0.103269 0.105762 0.0603255 0.056319 0.0653856 0.0620354 yield of N-waste on food
mu_TX J/mol 419315 424279 370324 378232 220944 204512 238317 224336 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