Ensis directus (Atlantic jackknife clam):  

Predictions & Data for this entry

Model:  abj  

MRE = 0.242
SMSE = 0.250

Zero-variate data
ab 5 2.749 (0.4501)dage at birthWijs2011
tj10.5 10.32 (0.01745)dtime since birth at metamWijs2011
tp492 526.8 (0.0708)dtime since birth at pubertyWijs2011
am2555 2555 (7.839e-08)dlife spanWijs2011
Lb0.0136 0.005494 (0.596)cmshell length at birthWijs2011
Lj0.045 0.0789 (0.7534)cmshell length at metamWijs2011
Lp4.841 4.325 (0.1066)cmshell length at pubertyWijs2011
L730 8 8.487 (0.06085)cmshell length at 730 dWijs2011
L1825 15 11.31 (0.246)cmshell length at 1825 dWijs2011
Li17.1 11.8 (0.3097)cmultimate total lengthWijs2011
Wdi1.831 2.186 (0.1939)gultimate ashfree dry weightWijs2011
GSI0.025 0.02397 (0.04115)-gonado somatic indexWijs2011
Fm5.3 3.96 (0.2529)L/hmaximum spec filtering rateWijs2011
Uni-variate data
DatasetFigure(RE)Independent variableDependent variableReference
tL see Fig. 1 (0.148)time since birthshell lengthWijs2011
LJO see Fig. 2 (0.3955)shell lengthO2 consumptionWijs2011
LW see Fig. 3 (0.1324)shell lengthwet weightCardWijs2011
LCR see Fig. 4 (0.3417)shell lengthclearance rateWijs2011
Pseudo-data at Tref
DataGeneralised animalEnsis directusUnitDescription
v 0.02 0.001499cm/denergy conductance
kap 0.8 0.9718-allocation fraction to soma
kap_R 0.95 0.95-reproduction efficiency
p_M 18 31.02J/d.cm^3vol-spec som maint
k_J 0.002 0.0021/dmaturity maint rate coefficient
kap_G 0.8 0.8-growth efficiency


  • This entry is discussed in Wijs2011 (ref: Wijs2011)


  • Wiki
  • Kooy2010
  • CardWijs2011
  • Wijs2011
  • KameBrum2011

Bibtex files with references for this entry

Jeroen Wijsman, Bas Kooijman, 2011/09/15 (last modified by Bas Kooijman 2013/05/27)

accepted: 2015/12/22

refer to this entry as: AmP Ensis directus version 2015/12/22 bio.vu.nl/thb/deb/deblab/add_my_pet/