Predictions & Data for this entry

Model: hex climate: Cwa, Cfa migrate:
COMPLETE = 2.9 ecozone: THp food: bjHl
MRE = 0.269 habitat: 0iTf gender: D
SMSE = 0.418 embryo: Th reprod: O

Zero-variate data
ab 11 7.972 (0.2752)dage at birthHsueTang1944
t19.33 9.027 (0.03245)dperiod of instar 1 HsueTang1944, TanaTake1993
t26.16 6.182 (0.003559)dperiod of instar 2 HsueTang1944, TanaTake1993
t36.33 6.761 (0.06804)dperiod of instar 3 HsueTang1944, TanaTake1993
t46.25 6.18 (0.01123)dperiod of instar 4 HsueTang1944, TanaTake1993
t56.94 6.085 (0.1232)dperiod of instar 5 HsueTang1944, TanaTake1993
tj 35 34.23 (0.02188)dtime since birth at start spinningHsueTang1944
te 20 20.16 (0.008091)dtime since start spinning at emergenceHsueTang1944
am 7 7.085 (0.01214)dlife span as imagoHsueTang1944
Ww00.49 0.2822 (0.424)mgegg wet weightHsueTang1944
Wwb0.345 0.2539 (0.264)mgwet weight at birthHsueTang1944
Ww22.71 2.761 (0.01895)mginitial wet weight of instar 2 HsueTang1944, TanaTake1993
Ww312.69 13.16 (0.03736)mginitial wet weight of instar 3 HsueTang1944, TanaTake1993
Ww473.79 71.98 (0.02452)mginitial wet weight of instar 4 HsueTang1944, TanaTake1993
Ww5366.4 339.6 (0.07326)mginitial wet weight of instar 5 HsueTang1944, TanaTake1993
Wwj2504 1448 (0.4216)mgpupal wet weight at start spinningHsueTang1944
WdS180 110.8 (0.3842)mgsilk weight per pupaHsueTang1944
Wwjs930 1057 (0.1366)mgpupal wet weight just after spinningHsueTang1944
Wwj5900 963 (0.07001)mgpupal wet weight after 5 dHsueTang1944
Wwe600 977.1 (0.6284)mgimago wet weight at emergenceHsueTang1944
Wwe5400 977.1 (1.443)mgimago wet weight at deathHsueTang1944
Ni400 273.4 (0.3166)#number of eggs laidHsueTang1944
Uni-variate data
DatasetFigure(RE)Independent variableDependent variableReference
tWe see Fig. 1 (0.4482)ageembryo wet weight HsueTang1944, TanaTake1993
tJOe see Fig. 2 (0.5234)ageembryo O_2 consumption HsueTang1944, TanaTake1993
tW see Fig. 3 (0.08799)time since birthlarva wet weightHsueTang1944
tJO see Fig. 4 (0.8229)time since birthlarva O_2 consumptionHsueTang1944
tWj see Fig. 5 (0.2448)time since pupationpupa wet weightHsueTang1944
tJOj see Fig. 6 (0.6053)time since pupationpupa O_2 consumptionHsueTang1944
Pseudo-data at Tref
DataGeneralised animalBombyx moriUnitDescription
v 0.02 0.01202cm/denergy conductance
kap 0.8 0.8716-allocation fraction to soma
kap_R 0.95 0.95-reproduction efficiency
p_M 18 26.82J/^3vol-spec som maint
k_J 0.002 0.001451/dmaturity maint rate coefficient
kap_G 0.8 0.8057-growth efficiency


  • at end of larval stage, spinning starts, lasting 3 d, and feeding ceases (ref: Wiki)
  • imagos cannot fly and do not eat (ref: Wiki)
  • 610-915 m silk per cocoon, 10 mum diameter (ref: Wiki)
  • 2000-3000 cocoons per pound (= 453.59237 g) of silk (ref: Wiki)


  • chemical composition of silk: C12 H29 O11 N5
  • Silk production is from decaying larval structure in pupa
  • spinning period is included in pupal stage, which lasts 20 d


  • [Wiki]
  • [HsueTang1944] T. Y. HSUEH and P. S. TANG. Physiology of the silkworm i. growth and respiration of Bombix mori during its entire life-cycle. Physiological Zoology, 17:71--78, 1944.
  • [Kooy2010] S.A.L.M. Kooijman. Dynamic Energy Budget theory for metabolic organisation. Cambridge Univ. Press, Cambridge, 2010.
  • [TanaTake1993] Y. Tanaka and S. Takeda. Ecdysone and 20-hydroxyecdysone supplements to the diet affect larval development in the silkworm, Bombix mori, differently. J. Insect Physiol., 39:805--809, 1993.

Bibtex file with references for this entry

James Maino, Bas Kooijman, 2012/09/26 (last modified by Bas Kooijman 2016/02/17)

accepted: 2016/04/27

refer to this entry as: AmP Bombyx mori version 2016/04/27