Predictions & Data for this entry

Model: stx climate: MC, ME migrate: Mo phylum:
COMPLETE = 2.5 ecozone: MAN food: bxM, xiCvf, xiCi class:
MRE = 0.139 habitat: 0iMc gender: Dg order:
SMSE = 0.191 embryo: Tv reprod: O family:

Zero-variate data
tg348 346.7 (0.00381)dgestation timeAnAge
tx 12 12.43 (0.03624)dtime since birth at weaningKovaLyde2014
tp2190 2359 (0.07724)dtime since birth at pubertyKovaLyde2014
am1.092e+04 1.107e+04 (0.01352)dlife spanAnAge
Lb 85 71.75 (0.1559)cmlength at birthKovaLyde2014
Lp137 165.2 (0.2062)cmstandard length at pubertyMillBurt2001
Wwb1e+04 1.146e+04 (0.1462)gwet weight at birthKovaLavi1985
Wwx3.5e+04 1.221e+04 (0.6512)gwet weight at weaningKovaLavi1985
Wwi1.8e+05 1.536e+05 (0.1469)gultimate wet weightAnAge
Ri0.00274 0.002757 (0.006345)#/dmaximum reprod rateWiki
Uni-variate data
DatasetFigure(RE)Independent variableDependent variableReference
tL see Fig. 1 (0.05567)time since birthtotal lengthInneStew1981
tWx see Fig. 2 (0.1456)time since birthwet weightKovaLavi1985
tW see Fig. 3 (0.1643)time since birthwet weightInneStew1981
Pseudo-data at Tref
DataGeneralised animalPagophilus groenlandicusUnitDescription
v 0.02 0.03476cm/denergy conductance
kap 0.8 0.3815-allocation fraction to soma
kap_R 0.95 0.95-reproduction efficiency
p_M 18 20.13J/^3vol-spec som maint
k_J 0.002 0.00073511/dmaturity maint rate coefficient
kap_G 0.8 0.8015-growth efficiency
t_0 0 120dtime at start development
k 0.3 0.286-maintenance ratio


  • 120 days of delayed implantation and 228 days of gestation (ref: Wiki)
  • No sexual dimorphism (ref: KovaLavi1986)
  • The fat content of phocid seal milk is generally high relative to many other mammalian groups (ref: KovaLavi1986)
  • the growth rate during weaning appears to be second only to that of the hooded seal Crystophora cristata (ref: KovaLavi1985)


  • Milk was supposed to be 15 times more nutritinous than solid food to capture fast neonate growth till weaning
  • In view of low somatic maintenance, pseudodata k_J = 0.002 1/d is replaced by pseudodata k = 0.3


  • The creation of this entry was support by the Norwegian Science Council (NFR 255295)


Bibtex file with references for this entry

Starrlight Augustine, Ana Sofia Aniceto, 2016/12/06 (last modified by Bas Kooijman 2017/11/12)

accepted: 2017/11/12

refer to this entry as: AmP Pagophilus groenlandicus version 2017/11/12