Hypsibius convergens (Water-bear):  

Predictions & Data for this entry

Model:  abj  

MRE = 0.079
SMSE = 0.071

Zero-variate data
ab7.5 6.657 (0.1124)dage at birthGrev1980
tp 12 14.55 (0.2121)dtime since birth at pubertyGrev1980
am900 900.2 (0.0002289)dlife spanEarth
Lb0.01 0.01029 (0.02948)cmphysical length at birthGrev1980
Lp0.01875 0.01768 (0.05697)cmphysical length at pubertyGrev1980
Li0.0265 0.0273 (0.03023)cmultimate physical lengthMorgKing1976
Wwb5.31e-08 5.795e-08 (0.09137)gwet weight at birthestimate
Wwp3.5e-07 2.936e-07 (0.1611)gwet weight at pubertyestimate
Wwi9.88e-07 1.081e-06 (0.09395)gultimate wet weightestimate
Ri0.1 0.1 (1.734e-05)#/dmaximum reprod rateGrev1980
Pseudo-data at Tref
DataGeneralised animalHypsibius convergensUnitDescription
v 0.02 0.001776cm/denergy conductance
kap 0.8 0.9409-allocation fraction to soma
kap_R 0.95 0.95-reproduction efficiency
p_M 18 416.7J/d.cm^3vol-spec som maint
k_J 0.002 0.0021/dmaturity maint rate coefficient
kap_G 0.8 0.8038-growth efficiency


  • The cuticle is moulted about four times during the life cycle. Some species lay their eggs inside the moulted cuticle, into which males shed sperm. It appears that egg laying and defecation can only happen during moulting. (ref: bumblebee)


  • treated as identical to H. conjungens (but this is uncertain)


  • Wiki
  • Kooy2010
  • MorgKing1976
  • Grev1980
  • Baum1961
  • bumblebee
  • Earth

Bibtex files with references for this entry

Bas Kooijman, 2012/12/23 (last modified by Bas Kooijman 2016/10/18)

accepted: 2016/03/01

refer to this entry as: AmP Hypsibius convergens version 2016/03/01 bio.vu.nl/thb/deb/deblab/add_my_pet/