Predictions & Data for this entry

Model: std climate: Cfb, Dfb, Dfc migrate:
COMPLETE = 2.5 ecozone: TH food: biD
MRE = 0.294 habitat: 0iFp, 0iFl, 0iFm, 0iFc gender: D
SMSE = 0.231 embryo: Fbf reprod: O

Zero-variate data
ab 30 30 (2.354e-05)dage at birthWiki
tp 30 39.71 (0.3238)dtime since birth at pubertyMarcSutc1978
am750 750 (3.54e-05)dlife spanWiki
Lb0.08 0.2148 (1.685)cmtotal length at birth for femaleVeroPrev2009
Lbm0.08 0.2193 (1.742)cmtotal length at birth for maleVeroPrev2009
Lp0.3 0.3868 (0.2894)cmtotal length at puberty for femaleArak2001
Lpm0.35 0.3949 (0.1282)cmtotal length at puberty for maleArak2001
Li 1 1.024 (0.02417)cmultimate total length for femaleVeroPrev2009
Lim1.2 1.046 (0.128)cmultimate total length for maleVeroPrev2009
Wwb0.0005 0.0004155 (0.1689)gwet weight at birth for femaleMarcSutc1978
Wwbm0.0005 0.0004468 (0.1064)gwet weight at birth for maleMarcSutc1978
Wwp0.003 0.002426 (0.1912)gwet weight at puberty for femaleMarcSutc1978
Wwpm0.003 0.002607 (0.1308)gwet weight at puberty for maleMarcSutc1978
Wwi0.045 0.04504 (0.0008717)gultimate wet weight for femaleArak2001
Wwim0.048 0.04853 (0.01108)gultimate wet weight for maleArak2001
Ri0.48 0.4805 (0.0009862)#/dmaximum reprod rateMarcSutc1978
Uni-variate data
DatasetFigure(RE)Independent variableDependent variableReference
tW see Fig. 1 (0.09877)time since birthwet weightMarcSutc1978
LW see Fig. 2 (0.2704)lengthwet weightArak2001
Pseudo-data at Tref
DataGeneralised animalAsellus aquaticusUnitDescription
v 0.02 0.02159cm/denergy conductance
kap 0.8 0.821-allocation fraction to soma
kap_R 0.95 0.95-reproduction efficiency
p_M 18 210.1J/^3vol-spec som maint
k_J 0.002 0.0021/dmaturity maint rate coefficient
kap_G 0.8 0.8006-growth efficiency


  • A. aquaticus is a common species, living in natural surface waters (ref: Wiki)
  • It can eat many different types of food with a huge difference in growth (ref: Wiki)
  • Growth and reproduction are temperature dependent, in colder regions typically one brood/year is found, but in warmer climates this can increase up to four broods/year. (ref: Wiki)


  • The results here are based on temperatures between 15 and 20 oC and abundant high quality food
  • Observed incubation time is possibly long because of the coupling between reproduction and moulting
  • Males are assumed to differ from females by {p_Am} only


  • [Wiki]
  • [Arak2001] K. S. Arakelova. The evaluation of individual production and scope for growth in aquatic sow bugs (Asellus aquaticus). Aquatic ecotoxicology, 35:31--42, 2001.
  • [Kooy2010] S.A.L.M. Kooijman. Dynamic Energy Budget theory for metabolic organisation. Cambridge Univ. Press, Cambridge, 2010.
  • [MarcSutc1978] J. H. Marcus, D. W. Sutcliffe, and L. G. Willoughby. Feeding and growth of Asellus Aquaticus (Isopoda) on food items from the littoral of Windermere, including green leaves of Elodea canadensis. Freshwater Biology, 8:505--519, 1978.
  • [VeroPrev2009] R. Verovnik, S. Prevorcnik, and J. Jugovic. Description of a neotype for Asellus aquaticus Linne, 1758 (Crustacea: Isopoda: Asellidea), with description of a new subterranean Asellus species from Europe. Zoologische Anzeiger, 248:101--118, 2009.

Bibtex file with references for this entry

Jan Baas, 2013/08/05 (last modified by Bas Kooijman 2017/02/28)

accepted: 2017/02/28

refer to this entry as: AmP Asellus aquaticus version 2017/02/28