Megalonaias nervosa: Population traits

at T = 17 °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: 2025/05/18
symbol units thin falsethin truethin falsethin truethin falsethin truedescription
f - 0.319914 0.3227 0.66135 0.66135 1 1 scaled functional response
r 1/d 0 0 0.00615797 0.00047344 0.00875218 0.000599242 spec pop growth rate
t2 d NaN NaN 112.561 1464.06 79.1971 1156.71 population doubling time
a_b d 1.3379 1.336 1.19522 1.19522 1.1298 1.1298 age at birth
t_j d 0.00310703 0.00308572 0.00183388 0.00183388 0.0014302 0.0014302 time since birth at metam
t_p d 6972.24 6546.2 1675.98 1675.98 1167.2 1167.2 time since birth at puberty
S_b - 1 1 1 1 1 1 survival probability at birth
S_j - 1 0.997922 1 0.99792 1 0.997919 survival probability at metam
S_p - 1 0.59099 1 0.473638 1 0.416658 survival probability at puberty
theta_0b - 7.3253e-05 0.220833 0.00719985 0.307984 0.00966267 0.351084 frac of ind that is embryo
theta_bj - 1.73244e-07 0.000518891 1.12117e-05 0.000480759 1.23963e-05 0.00045206 frac of ind between b and j
theta_jp - 7.44263e-05 0.172304 0.0072691 0.215246 0.00973199 0.230143 frac of ind between j and p
theta_pi - 0.999852 0.606343 0.98552 0.476289 0.980593 0.41832 frac of ind that is adult
L_bi cm 1.28726 0.0646815 0.229995 0.0268724 0.214535 0.0259703 mean structural length of post-natals
L2_bi cm^2 1.72897 0.0601704 0.0966234 0.0126518 0.0863136 0.012335 mean squared structural length of post-natals
L3_bi cm^3 2.35759 0.0779566 0.0567913 0.0192404 0.0498098 0.0217384 mean cubed structural length of post-natals
Ww_bi g 3.05822 0.101326 0.0916813 0.0310608 0.0960803 0.0419321 mean wet weight of post-natals
L_pi cm 1.28735 0.0818263 0.231658 0.0368816 0.216616 0.0375749 mean structural length of adults
L2_pi cm^2 1.7291 0.0773146 0.097337 0.0183717 0.0871711 0.019121 mean squared structural length of adults
L3_pi cm^3 2.35777 0.100176 0.0572108 0.0279549 0.0503048 0.0337214 mean cubed structural length of adults
Ww_pi g 3.05845 0.130206 0.0923586 0.0451291 0.097035 0.0650467 mean wet weight of adults
R 1/d 0 0 0 0 0 0 mean reproduction rate of adults
J_X g/d 0.00870297 0.000305512 0.00100545 0.000131653 0.00135808 0.000194082 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 yield of faeces on food
Y_VX mol/mol 0 0 0.347823 0.0691909 0.321 0.0671186 yield of living structure on food
Y_VX_d mol/mol 0.0179186 0.0456739 5.8325e-06 0.139488 2.44375e-06 0.147958 yield of dead structure on food
Y_EX mol/mol 0 0 0.213687 0.0425078 0.29819 0.0623493 yield of living reserve on food
Y_EX_d mol/mol 0.00532508 0.0136917 3.58323e-06 0.0856952 2.2701e-06 0.137444 yield of dead reserve on food
Y_CX mol/mol 0.867381 0.831259 0.329106 0.553743 0.271431 0.475756 yield of CO2 on food
Y_HX mol/mol 0.629333 0.603125 0.238785 0.401771 0.196938 0.345187 yield of H2O on food
Y_OX mol/mol -0.943277 -0.903995 -0.357903 -0.602196 -0.295181 -0.517384 yield of O2 on food
Y_NX mol/mol 0.130107 0.124689 0.0493659 0.0830615 0.0407146 0.0713633 yield of N-waste on food
mu_TX J/mol 460612 442133 181056 297649 147993 255076 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