Macrobrachium americanum: Population traits

at T = 24 °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: 2024/03/02
symbol units thin falsethin truethin falsethin truethin falsethin truedescription
f - 0.509519 0.523717 0.761858 0.761858 1 1 scaled functional response
r 1/d 0 0 0.00584506 0.00112312 0.00814364 0.00158865 spec pop growth rate
t2 d NaN NaN 118.587 617.164 85.1152 436.313 population doubling time
a_b d 6.47805 6.44921 6.07929 6.07929 5.83972 5.83972 age at birth
t_j d 8.00621 7.83434 5.91441 5.91441 4.91488 4.91488 time since birth at metam
t_p d 5000.23 4001.8 1607.94 1607.94 1152.76 1152.76 time since birth at puberty
S_b - 1 1 1 1 1 1 survival probability at birth
S_j - 0.999999 0.391348 0.999999 0.319397 1 0.319129 survival probability at metam
S_p - 0.999999 0.319931 0.999999 0.312729 1 0.2779 survival probability at puberty
theta_0b - 0.00127351 0.349019 0.0348344 0.42329 0.0463442 0.462336 frac of ind that is embryo
theta_bj - 0.00127696 0.227044 0.0328032 0.244689 0.0374204 0.230708 frac of ind between b and j
theta_jp - 0.000301235 0.0266406 0.000898328 0.00360066 0.00687548 0.0215712 frac of ind between j and p
theta_pi - 0.997148 0.397297 0.931464 0.32842 0.90936 0.285385 frac of ind that is adult
L_bi cm 2.30972 0.258674 0.552632 0.141484 0.501019 0.134089 mean structural length of post-natals
L2_bi cm^2 5.88295 0.38429 0.517908 0.0962282 0.436979 0.0837194 mean squared structural length of post-natals
L3_bi cm^3 15.5672 0.910628 0.657036 0.173442 0.530591 0.151647 mean cubed structural length of post-natals
Ww_bi g 21.5115 1.26804 1.03217 0.272469 0.928229 0.265295 mean wet weight of post-natals
L_pi cm 2.3133 0.396512 0.571015 0.215963 0.523182 0.213833 mean structural length of adults
L2_pi cm^2 5.89226 0.628486 0.536574 0.167565 0.45816 0.155997 mean squared structural length of adults
L3_pi cm^3 15.5919 1.49204 0.680805 0.304504 0.556432 0.285625 mean cubed structural length of adults
Ww_pi g 21.5456 2.07764 1.06951 0.478361 0.973435 0.499679 mean wet weight of adults
R 1/d 0 0 0 0 0 0 mean reproduction rate of adults
J_X g/d 0.102955 0.00691073 0.0135605 0.00251593 0.0150219 0.0028732 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 0.283207 0.0774248 0.287642 0.0838487 yield of living structure on food
Y_VX_d mol/mol 0.0449513 0.0955898 0.000282319 0.159933 0.000132655 0.168614 yield of dead structure on food
Y_EX mol/mol 0 0 0.161698 0.0442061 0.215566 0.0628383 yield of living reserve on food
Y_EX_d mol/mol 0.0171645 0.0375177 0.000161192 0.0913148 9.94148e-05 0.126364 yield of dead reserve on food
Y_CX mol/mol 0.828509 0.757518 0.445276 0.517746 0.387185 0.44896 yield of CO2 on food
Y_HX mol/mol 0.597447 0.546254 0.321094 0.373352 0.279203 0.32375 yield of H2O on food
Y_OX mol/mol -0.901004 -0.8238 -0.484238 -0.563049 -0.421063 -0.488244 yield of O2 on food
Y_NX mol/mol 0.124276 0.113628 0.0667915 0.0776619 0.0580777 0.0673441 yield of N-waste on food
mu_TX J/mol 440584 404070 241733 279284 209997 242208 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