Hebetancylus excentricus: Population traits

at T = 20 °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_minf f_max date: 2025/05/22
symbol units thin falsethin truethin falsethin truethin falsethin truedescription
f - 0.522323 NaN 0.761162 NaN 1 1 scaled functional response
r 1/d 0 0 0.00510321 NaN 0.0101153 NaN spec pop growth rate
t2 d NaN NaN 135.826 NaN 68.5248 NaN population doubling time
a_b d 3.60081 NaN 3.40958 NaN 3.2724 NaN age at birth
t_j d 121.602 NaN 74.4593 NaN 53.9588 NaN time since birth at metam
t_p d 424.687 NaN 231.419 NaN 160.729 NaN time since birth at puberty
S_b - 0.999978 NaN 0.999981 NaN 0.999983 NaN survival probability at birth
S_j - 0.999868 NaN 0.999886 NaN 0.999898 NaN survival probability at metam
S_p - 0.957074 NaN 0.98545 NaN 0.992687 NaN survival probability at puberty
theta_0b - 0.00750142 NaN 0.0197394 NaN 0.033578 NaN frac of ind that is embryo
theta_bj - 0.00757324 NaN 0.0195429 NaN 0.0326832 NaN frac of ind between b and j
theta_jp - 0.244092 NaN 0.336804 NaN 0.388498 NaN frac of ind between j and p
theta_pi - 0.740833 NaN 0.623913 NaN 0.54524 NaN frac of ind that is adult
L_bi cm 0.0327442 NaN 0.0335843 NaN 0.0321489 NaN mean structural length of post-natals
L2_bi cm^2 0.00123397 NaN 0.00145089 NaN 0.00141837 NaN mean squared structural length of post-natals
L3_bi cm^3 5.05789e-05 NaN 7.34636e-05 NaN 7.77484e-05 NaN mean cubed structural length of post-natals
Ww_bi g 5.14698e-05 NaN 7.53493e-05 NaN 8.03704e-05 NaN mean wet weight of post-natals
L_pi cm 0.0386593 NaN 0.0439987 NaN 0.0451218 NaN mean structural length of adults
L2_pi cm^2 0.00156995 NaN 0.00213854 NaN 0.00232269 NaN mean squared structural length of adults
L3_pi cm^3 6.63794e-05 NaN 0.000113051 NaN 0.000134571 NaN mean cubed structural length of adults
Ww_pi g 6.75486e-05 NaN 0.000115953 NaN 0.00013911 NaN mean wet weight of adults
R 1/d 0.00491054 NaN 0.0136143 NaN 0.0210551 NaN mean reproduction rate of adults
J_X g/d 1.14543e-06 NaN 2.0353e-06 NaN 2.65231e-06 NaN mean ingestion rate of wet food by post-natals
Y_PX mol/mol 0.109375 NaN 0.109375 NaN 0.109375 NaN yield of faeces on food
Y_VX mol/mol 0 NaN 0.184199 NaN 0.296514 NaN yield of living structure on food
Y_VX_d mol/mol 0.174623 NaN 0.0771897 NaN 0.0368169 NaN yield of dead structure on food
Y_EX mol/mol 0 NaN 0.00472814 NaN 0.00999936 NaN yield of living reserve on food
Y_EX_d mol/mol 0.00307586 NaN 0.00198136 NaN 0.00124158 NaN yield of dead reserve on food
Y_CX mol/mol 0.712927 NaN 0.622527 NaN 0.546053 NaN yield of CO2 on food
Y_HX mol/mol 0.514891 NaN 0.449603 NaN 0.394371 NaN yield of H2O on food
Y_OX mol/mol -0.775308 NaN -0.676998 NaN -0.593832 NaN yield of O2 on food
Y_NX mol/mol 0.106939 NaN 0.093379 NaN 0.0819079 NaN yield of N-waste on food
mu_TX J/mol 383497 NaN 338115 NaN 299652 NaN yield of heat on food

Remarks

  • Reprod-code O applies. Sex ratio is assumed to be 1:1. Parameters of male and female are the same.
  • Buffer handling rule: release each egg as soon as reproduction buffer allows
  • Weights of adults do not include reproduction buffer