Schmidtea polychroa (Freshwater flatworm):  

Predictions & Data for this entry

Model:  abj  

MRE = 0.033
SMSE = 0.033

Zero-variate data
ab 17 15.15 (0.109)dage at birthCardHart2005
tp_15217 223.7 (0.03081)dtime since birth at pubertyBallReyn1981
tp_23 68 72.15 (0.06099)dtime since birth at pubertyBallReyn1981
am912.5 913.4 (0.0009654)dlife spanBallReyn1981
Lb0.14 0.1407 (0.004772)cmtotal length at birthCardHart2005
Lp1.1 1.075 (0.02237)cmtotal length at pubertyBallReyn1981
Li2.2 2.211 (0.005218)cmultimate total lengthBallReyn1981
Wwb0.0001 0.0001007 (0.006803)gwet weight at birthguessed
Wwp0.0475 0.04498 (0.05298)gwet weight at pubertyguessed
Wwi0.38 0.3912 (0.02949)gultimate wet weightguessed
Ri0.008219 0.008566 (0.04214)#/dmaximum reprod rateBallReyn1981
Pseudo-data at Tref
DataGeneralised animalSchmidtea polychroaUnitDescription
v 0.02 0.01004cm/denergy conductance
kap 0.8 0.9998-allocation fraction to soma
kap_R 0.95 0.475-reproduction efficiency
p_M 18 60.94J/^3vol-spec som maint
k_J 0.002 0.0021/dmaturity maint rate coefficient
kap_G 0.8 0.802-growth efficiency


  • Formerly known as Dugesia p. (ref: Wiki)
  • ectolecithal eggs in cocoon: in these eggs, one or several small yolk-poor oocytes are surrounded by large numbers of yolk cells which are produced by a specialized gland, the vitellarium. (ref: Wiki)
  • Triclads show a unique mode of cleavage called blastomere anarchy. Instead of remaining together and forming an ordered morula of micromeres and macromeres as in other spiralian embryos, blastomeres of triclad embryos lose contact and migrate actively to various positions within the syncytial yolk (ref: Wiki)
  • Temp range: 10-23 for cocoon prod, 05-23 for egg development, 10-23 for maturtion & life cycle (ref: Wiki)
  • feeding on wounded living prey (ref: Wiki)


  • Hermaphroditic, so kap_R is halved


  • Wiki
  • Kooy2010
  • CardHart2005
  • BallReyn1981

Bibtex files with references for this entry

Bas Kooijman, 2012/12/23 (last modified by Bas Kooijman 2015/11/07)

accepted: 2015/12/22

refer to this entry as: AmP Schmidtea polychroa version 2015/12/22