Predictions & Data for this entry

Model: stx climate: ME migrate: Mo phylum:
COMPLETE = 2.5 ecozone: MS food: bxM, xiCic, xiCvf class:
MRE = 0.163 habitat: 0iMp gender: Dg order:
SMSE = 0.068 embryo: Tv reprod: O family:

Zero-variate data

Data Observed Predicted (RE) Unit Description Reference
tg 220 259.5 (0.1796) d gestation time AnAge
tx 23 16.46 (0.2842) d time since birth at weaning Wiki
tp 1059 1153 (0.08871) d time since birth at puberty for females AnAge
am 9125 9075 (0.005425) d life span AnAge
Li 260 268.6 (0.03307) cm ultimate total length for females Wiki
Lim 500 483.2 (0.03368) cm ultimate total length for males Wiki
Wwb 4.25e+04 5.458e+04 (0.2843) g wet weight at birth AnAge
Wwx 1.25e+05 5.692e+04 (0.5447) g wet weight at weaning Wiki
Wwi 4e+05 4.221e+05 (0.05537) g ultimate wet weight for females Wiki
Wwim 3.5e+06 3.558e+06 (0.01661) g ultimate wet weight for males Wiki
Ri 0.00274 0.002457 (0.1033) #/d maximum reprod rate AnAge

Uni- and bivariate data

Data Figure Independent variable Dependent variable (RE) Reference
tW_f Data for female, male time since birth wet weight (0.1871) Bryd1969
tW_m Data for female, male time since birth wet weight (0.3055) Bryd1969

Pseudo-data at Tref = 20°C

Data Generalised animal Mirounga leonina Unit Description
v 0.02 0.0682 cm/d energy conductance
kap 0.8 0.7318 - allocation fraction to soma
kap_R 0.95 0.95 - reproduction efficiency
p_M 18 7.719 J/d.cm^3 vol-spec som maint
k_J 0.002 0.0002306 1/d maturity maint rate coefficient
kap_G 0.8 0.8 - growth efficiency
k 0.3 0.2343 - maintenance ratio

Discussion

  • Males are assumes to differ from females by {p_Am} only
  • Male {p_Am} jumps upward at puberty, as discussed in Kooy2014 under type A accelerationThe male growth curve could fit better if puberty was dealed with as a period, rather than an event
  • In view of low somatic maintenance, k has been targeted to 0.1 and pseudodata for k_J removed

Facts

  • largest sex difference among mammals; can dive till 2.133 km (Ref: Wiki)
  • gestation time of 11.5 month include 3-4 month delayed implantation (Ref: AnAge)
  • this entry is used in GoedMelb2018 (Ref: GoedMelb2018)

Bibliography

Citation