Predictions & Data for this entry

Model: abj climate: MC migrate: phylum:
COMPLETE = 2.8 ecozone: MAN food: bjPp, bjD class:
MRE = 0.206 habitat: 0jMc, jiMb gender: D order:
SMSE = 0.096 embryo: Mp reprod: O family:

Zero-variate data

Data Observed Predicted (RE) Unit Description Reference
ab 1.667 1.815 (0.08919) d age at emergence Goul1969
tj 58.33 2.972 (0.9491) d time since birth at metam Goul1969
tp 547.5 226.2 (0.5869) d time since birth at puberty Suer1984
am 3650 3657 (0.002036) d life span Suer1984
Wwb 8.2e-06 6.796e-06 (0.1712) g wet weight at birth guess
Wwj 0.0002 0.0001768 (0.1161) g wet weight at settle Suer1984
Wwp 56 67.13 (0.1988) g wet weight at puberty Suer1984
Wwi 160 184.4 (0.1522) g ultimate wet weight Suer1984
Ri 1.096e+05 8.151e+04 (0.2562) #/d reprod rate guess

Uni- and bivariate data

Data Figure Independent variable Dependent variable (RE) Reference
V0V1_A Data at long, short exposure times initial volume final volume (0.2387) Suer1984
V0V1_S Data at long, short exposure times initial volume final volume (0.2532) Suer1984

Pseudo-data at Tref = 20°C

Data Generalised animal Urechis caupo Unit Description
v 0.02 0.0294 cm/d energy conductance
kap 0.8 0.5 - allocation fraction to soma
kap_R 0.95 0.95 - reproduction efficiency
p_M 18 12.28 J/d.cm^3 vol-spec som maint
k_J 0.002 0.002 1/d maturity maint rate coefficient
kap_G 0.8 0.7922 - growth efficiency
k 0.3 0.172 - maintenance ratio

Discussion

  • Adjusted d_V and d_E of 0.04 g/cm^3 is used
  • In absence of reprod data, kap = 0.5 is fixed for this high-fertility species
  • Under-estimation of t_j might be linked to assimilation by trochophora larvae; t_j was ignored
  • In view of low somatic maintenance, pseudodata k_J = 0.002 1/d is replaced by pseudodata k = 0.3

Facts

  • Suspension feeder, contrary to e.g. Echiurus, which is a deposit feeder (Ref: Suer1984)

Bibliography

Citation