Phoca vitulina: Population traits

at T = 37 °C with background hazards for embryo, baby, 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 stx f_min f_max date: 2022/12/20
symbol units thinning falsethinning true thinning falsethinning true description
femalemale femalemale femalemale femalemale
f - 0.908264 0.908264 0.911929 0.911929 1 1 1 1 scaled functional response
r 1/d 0 0 0 0 0.000766119 0.000766119 0.000402707 0.000402707 spec pop growth rate
t2 d NaN NaN NaN NaN 904.752 904.752 1721.22 1721.22 population doubling time
a_b d 295.552 295.552 295.552 295.552 295.552 295.552 295.552 295.552 age at birth
t_x d 3324.62 1428.87 2701.68 1392.95 1151.27 947.688 1151.27 947.688 time since birth at weaning
t_p d 32.5454 31.4492 32.4605 31.3731 30.6919 29.7799 30.6919 29.7799 time since birth at puberty
S_b - 1 1 1 1 1 1 1 1 survival probability at birth
S_x - 1 1 0.632399 0.60736 1 1 0.591251 0.569171 survival probability at weaning
S_p - 0.999961 0.999998 0.35529 0.350972 0.999999 0.999999 0.348227 0.344505 survival probability at puberty
theta_0b - 0.0134785 0.0129034 0.0364576 0.0386606 0.202654 0.202652 0.245481 0.258917 frac of ind that is embryo
theta_bx - 0.0134761 0.0129012 0.0284757 0.0295708 0.161566 0.161566 0.165257 0.170998 fraction of individuals that is baby
theta_xp - 0.138113 0.0494708 0.121289 0.0616436 0.305732 0.25002 0.219305 0.181033 fraction of individuals that is juvenile
theta_pi - 0.834932 0.924725 0.813777 0.870125 0.330048 0.385762 0.369958 0.389052 frac of ind that is adult
L_bi cm 18.1096 19.1102 18.0409 19.0052 17.0081 17.6504 17.2222 17.7929 mean structural length of post-natals
L2_bi cm^2 328.709 366.174 326.917 363.185 296.949 321.242 305.687 328.363 mean squared structural length of post-natals
L3_bi cm^3 5976.55 7029.81 5943.03 6967.11 5298.75 5995.81 5559.19 6238.47 mean cubed structural length of post-natals
Ww_bi g 59012.2 72919.6 58894 72532.7 57068.8 67870.1 59873.9 70616.9 mean wet weight of post-natals
L_pi cm 18.3234 19.3255 18.3952 19.3995 19.5965 20.3499 19.789 20.645 mean structural length of adults
L2_pi cm^2 335.748 373.488 338.383 376.355 384.279 414.785 391.831 426.831 mean squared structural length of adults
L3_pi cm^3 6152.04 7218.35 6224.61 7301.72 7540.48 8467.7 7762.77 8836.8 mean cubed structural length of adults
Ww_pi g 60745 74875.3 61684.4 76016.2 81212.8 95850.9 83606.9 100029 mean wet weight of adults
R 1/d 5.46345e-05 0.00143184 0.000151225 0.00153613 0.00185089 0.00295188 0.00211373 0.00337591 mean reproduction rate of adults
J_X g/d 422.851 497.532 422.242 495.461 420.577 480.566 432.953 491.22 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 0.00965214 0.00955851 0.00517084 0.00511437 yield of living structure on food
Y_VX_d mol/mol 0.000672583 0.000644459 0.00120365 0.00119162 4.74113e-07 3.98865e-07 0.00415485 0.00436915 yield of dead structure on food
Y_EX mol/mol 0 0 0 0 0.0943038 0.0986399 0.0505204 0.0527782 yield of living reserve on food
Y_EX_d mol/mol 0.00596847 0.00604045 0.0107243 0.011214 4.6322e-06 4.11612e-06 0.0405939 0.0450879 yield of dead reserve on food
Y_CX mol/mol 0.817685 0.817645 0.812795 0.812353 0.727664 0.72374 0.730921 0.72453 yield of CO2 on food
Y_HX mol/mol 0.697365 0.697331 0.693194 0.692818 0.62059 0.617244 0.623368 0.617917 yield of H2O on food
Y_OX mol/mol -0.961333 -0.961285 -0.955583 -0.955064 -0.855497 -0.850884 -0.859326 -0.851812 yield of O2 on food
Y_NX mol/mol 0.0662988 0.0662955 0.0659023 0.0658665 0.0589998 0.0586817 0.0592639 0.0587457 yield of N-waste on food
mu_TX J/mol 460793 460767 457960 457701 408606 406307 410494 406765 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