Squalus suckleyi: Population traits

at T = 9 °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: 2025/05/22
symbol units thinning falsethinning true thinning falsethinning true description
femalemale femalemale femalemale femalemale
f - 0.678636 0.678636 0.76636 0.76636 1 1 1 1 scaled functional response
r 1/d 0 0 0 0 0.000299775 0.000299775 6.75905e-05 6.75905e-05 spec pop growth rate
t2 d NaN NaN NaN NaN 2312.22 2312.22 10255.1 10255.1 population doubling time
a_b d 816.754 828.565 801.824 812.956 772.269 781.934 772.269 781.934 age at birth
t_p d 18739.2 13539.3 10195.3 8569.23 5977.13 5179.19 5977.13 5179.19 time since birth at puberty
S_b - 0.999942 0.999934 0.999945 0.999937 0.99995 0.999943 0.99995 0.999943 survival probability at birth
S_p - 0.999653 0.999596 0.528531 0.550265 0.999726 0.999684 0.472354 0.49045 survival probability at puberty
theta_0b - 0.0315349 0.0332569 0.196989 0.184985 0.207922 0.2104 0.32271 0.309358 frac of ind that is embryo
theta_bp - 0.0315445 0.0332679 0.14223 0.136301 0.164976 0.16646 0.209725 0.204701 fraction of individuals that is juvenile
theta_pi - 0.936921 0.933475 0.660781 0.678713 0.627102 0.62314 0.467566 0.485941 frac of ind that is adult
L_bi cm 4.19294 3.85041 3.71326 3.50901 3.38219 3.21884 3.39331 3.28441 mean structural length of post-natals
L2_bi cm^2 18.3733 15.4374 15.8893 13.9179 13.3255 11.9112 14.5215 13.2678 mean squared structural length of post-natals
L3_bi cm^3 82.7019 63.4884 74.169 59.658 59.2534 49.3176 73.655 62.4672 mean cubed structural length of post-natals
Ww_bi g 167.301 122.764 159.847 122.558 148.569 117.168 184.679 148.408 mean wet weight of post-natals
L_pi cm 4.27775 3.92871 4.15246 3.88113 3.81215 3.617 4.1452 3.95125 mean structural length of adults
L2_pi cm^2 18.8969 15.8896 18.702 16.158 16.0182 14.2868 19.6971 17.6245 mean squared structural length of adults
L3_pi cm^3 85.3251 65.587 89.1002 70.7062 73.3883 61.0697 104.341 86.6401 mean cubed structural length of adults
Ww_pi g 172.607 126.822 192.026 145.255 184.01 145.088 261.619 205.837 mean wet weight of adults
R 1/d 0 0 0 4.21593e-05 0 9.24914e-05 0.000457702 0.00098579 mean reproduction rate of adults
J_X g/d 0.166627 0.127782 0.162727 0.130096 0.178076 0.145282 0.194059 0.161829 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 0.0997475 0.101762 0.0256539 0.0260904 yield of living structure on food
Y_VX_d mol/mol 0.0270775 0.0279771 0.0515096 0.0525591 0.00221856 0.00246259 0.0589977 0.0598771 yield of dead structure on food
Y_EX mol/mol 0 0 0 0 0.150354 0.140001 0.0386693 0.0358946 yield of living reserve on food
Y_EX_d mol/mol 0.0276986 0.0261209 0.0595023 0.0554152 0.00334414 0.00338798 0.08893 0.0823775 yield of dead reserve on food
Y_CX mol/mol 0.77316 0.773787 0.721142 0.723952 0.587339 0.594785 0.627496 0.634906 yield of CO2 on food
Y_HX mol/mol 0.664035 0.664574 0.619359 0.621773 0.504441 0.510837 0.538931 0.545295 yield of H2O on food
Y_OX mol/mol -0.908986 -0.909723 -0.847829 -0.851133 -0.69052 -0.699275 -0.737732 -0.746444 yield of O2 on food
Y_NX mol/mol 0.0626887 0.0627395 0.058471 0.0586988 0.0476221 0.0482258 0.0508781 0.0514789 yield of N-waste on food
mu_TX J/mol 436079 436491 406885 408581 331173 335640 353787 358186 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