Rhizoprionodon acutus: Population traits

at T = 31 °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: 2025/06/20
symbol units thinning falsethinning true thinning falsethinning true description
femalemale femalemale femalemale femalemale
f - 0.628522 NaN 0.907659 0.907659 1 1 1 1 scaled functional response
r 1/d 0 0 0 0 0.000963115 0.000963115 5.37311e-05 5.37311e-05 spec pop growth rate
t2 d NaN NaN NaN NaN 719.693 719.693 12900.3 12900.3 population doubling time
a_b d 303.042 NaN 288.888 NaN 285.757 290.394 285.757 290.394 age at birth
t_p d 1749.35 NaN 821.664 NaN 734.329 870.639 734.329 870.639 time since birth at puberty
S_b - 0.999717 NaN 0.999754 NaN 0.999762 0.999713 0.999762 0.999713 survival probability at birth
S_p - 0.998016 NaN 0.45392 NaN 0.998541 0.998176 0.434386 0.463393 survival probability at puberty
theta_0b - 0.0711496 NaN 0.275275 NaN 0.248511 0.253553 0.308421 0.289421 frac of ind that is embryo
theta_bp - 0.0710975 NaN 0.182786 NaN 0.188608 0.191549 0.197556 0.191342 fraction of individuals that is juvenile
theta_pi - 0.857753 NaN 0.541939 NaN 0.562881 0.554899 0.494024 0.519237 frac of ind that is adult
L_bi cm 4.85387 NaN 5.37584 NaN 5.13321 4.74947 5.46464 5.09015 mean structural length of post-natals
L2_bi cm^2 24.2733 NaN 32.4764 NaN 29.3033 24.6321 34.3714 28.9565 mean squared structural length of post-natals
L3_bi cm^3 124.016 NaN 212.721 NaN 181.989 137.226 238.618 178.545 mean cubed structural length of post-natals
Ww_bi g 345.944 NaN 762.445 NaN 700.141 476.542 918.003 620.031 mean wet weight of post-natals
L_pi cm 5.02086 NaN 6.1989 NaN 5.83957 5.36505 6.46387 5.89025 mean structural length of adults
L2_pi cm^2 25.6123 NaN 40.4857 NaN 36.0125 30.0614 44.5474 36.4486 mean squared structural length of adults
L3_pi cm^3 132.358 NaN 275.599 NaN 233.3 175.263 323.147 234.834 mean cubed structural length of adults
Ww_pi g 369.213 NaN 987.816 NaN 897.543 608.63 1243.2 815.502 mean wet weight of adults
R 1/d 0.000238791 NaN 0.00336653 NaN 0.00258249 0.00141565 0.0042254 0.00257584 mean reproduction rate of adults
J_X g/d 1.65592 NaN 3.19951 NaN 3.1806 2.32192 3.73069 2.72956 mean ingestion rate of wet food by post-natals
Y_PX mol/mol 0.109375 NaN 0.109375 NaN 0.109375 0.109375 0.109375 0.109375 yield of faeces on food
Y_VX mol/mol 0 NaN 0 NaN 0.0551079 0.0569203 0.00343669 0.00351465 yield of living structure on food
Y_VX_d mol/mol 0.0253449 NaN 0.0440211 NaN 0.00559976 0.00643043 0.0438112 0.0455965 yield of dead structure on food
Y_EX mol/mol 0 NaN 0 NaN 0.156901 0.140745 0.00978482 0.00869058 yield of living reserve on food
Y_EX_d mol/mol 0.0453548 NaN 0.113762 NaN 0.0159434 0.0159004 0.124738 0.112745 yield of dead reserve on food
Y_CX mol/mol 0.758431 NaN 0.677879 NaN 0.607792 0.620331 0.655691 0.666072 yield of CO2 on food
Y_HX mol/mol 0.651385 NaN 0.582203 NaN 0.522008 0.532777 0.563146 0.572062 yield of H2O on food
Y_OX mol/mol -0.891669 NaN -0.796966 NaN -0.714567 -0.729309 -0.770879 -0.783085 yield of O2 on food
Y_NX mol/mol 0.0614944 NaN 0.0549632 NaN 0.0492805 0.0502971 0.0531641 0.0540058 yield of N-waste on food
mu_TX J/mol 427380 NaN 381215 NaN 341069 348533 368403 374566 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