Gavialis gangeticus: Population traits

at T = 22 °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 - 0.758843 0.758843 0.768329 0.768329 1 1 1 1 scaled functional response
r 1/d 0 0 0 0 0.000664541 0.000664541 0.000163003 0.000163003 spec pop growth rate
t2 d NaN NaN NaN NaN 1043.05 1043.05 4252.37 4252.37 population doubling time
a_b d 280.499 272.983 280.202 272.759 274.537 268.522 274.537 268.522 age at birth
t_p d 26915.3 4875.5 14227.4 4803.93 5454.05 3783.56 5454.05 3783.56 time since birth at puberty
S_b - 1 1 1 1 1 1 1 1 survival probability at birth
S_p - 0.999999 0.999999 0.359719 0.327662 0.999999 0.999999 0.33518 0.310101 survival probability at puberty
theta_0b - 0.00621595 0.00526753 0.231044 0.291923 0.166755 0.163412 0.433348 0.463611 frac of ind that is embryo
theta_bp - 0.00621715 0.00526859 0.137615 0.166169 0.138967 0.136728 0.239436 0.246999 fraction of individuals that is juvenile
theta_pi - 0.987567 0.989464 0.631341 0.541908 0.694278 0.699859 0.327216 0.289389 frac of ind that is adult
L_bi cm 24.5145 34.6772 17.4355 20.6453 11.5048 13.1389 8.94399 9.09005 mean structural length of post-natals
L2_bi cm^2 618.027 1244.19 397.651 645.464 174.939 239.921 137.341 159.389 mean squared structural length of post-natals
L3_bi cm^3 15768.7 45264.1 9863.72 22645 3208.85 5457.11 3013.3 4421.76 mean cubed structural length of post-natals
Ww_bi g 72216.3 277295 45614.4 140178 18346.1 42321.2 17228 34291.8 mean wet weight of post-natals
L_pi cm 24.6446 34.8408 20.4329 25.8218 13.0267 14.9246 12.7541 13.6027 mean structural length of adults
L2_pi cm^2 621.823 1250.73 481.304 838.928 206.834 283.585 227.363 282.73 mean squared structural length of adults
L3_pi cm^3 15867.6 45504.7 12002.1 29571.1 3838.38 6509.72 5177.11 8144.71 mean cubed structural length of adults
Ww_pi g 72669.2 278769 55503.3 183052 21945.3 50484.4 29599.3 63164.2 mean wet weight of adults
R 1/d 0 0.191557 0 0.0824222 0 0 0 0 mean reproduction rate of adults
J_X g/d 99.0265 285.479 64.5122 149.953 36.9384 72.5445 28.9997 48.1941 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 0.0577288 0.0499896 0.0169373 0.0149553 yield of living structure on food
Y_VX_d mol/mol 0.0040534 0.00358784 0.0101415 0.00902331 1.59816e-05 9.66661e-06 0.0298993 0.0270826 yield of dead structure on food
Y_EX mol/mol 0 0 0 0 0.272326 0.337691 0.0798987 0.101027 yield of living reserve on food
Y_EX_d mol/mol 0.01451 0.0183919 0.0367574 0.0468332 7.53907e-05 6.53003e-05 0.141045 0.182949 yield of dead reserve on food
Y_CX mol/mol 0.70855 0.705774 0.685527 0.678249 0.455389 0.408581 0.506061 0.458747 yield of CO2 on food
Y_HX mol/mol 0.753364 0.750413 0.728886 0.721147 0.484191 0.434423 0.538069 0.487761 yield of H2O on food
Y_OX mol/mol -0.899313 -0.89579 -0.870093 -0.860855 -0.577994 -0.518584 -0.642308 -0.582255 yield of O2 on food
Y_NX mol/mol 0.163512 0.162871 0.158199 0.156519 0.10509 0.0942879 0.116783 0.105865 yield of N-waste on food
mu_TX J/mol 454513 452642 439493 434592 288678 257133 321864 290128 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