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
Data	Observed	Predicted	(RE)	Unit	Description	Reference
ab	11	7.972	(0.2752)	d	age at birth	HsueTang1944
t1	9.33	9.027	(0.03245)	d	period of instar 1	HsueTang1944, TanaTake1993
t2	6.16	6.182	(0.003559)	d	period of instar 2	HsueTang1944, TanaTake1993
t3	6.33	6.761	(0.06804)	d	period of instar 3	HsueTang1944, TanaTake1993
t4	6.25	6.18	(0.01123)	d	period of instar 4	HsueTang1944, TanaTake1993
t5	6.94	6.085	(0.1232)	d	period of instar 5	HsueTang1944, TanaTake1993
tj	35	34.23	(0.02188)	d	time since birth at start spinning	HsueTang1944
te	20	20.16	(0.008091)	d	time since start spinning at emergence	HsueTang1944
am	7	7.085	(0.01214)	d	life span as imago	HsueTang1944
Ww0	0.49	0.2822	(0.424)	mg	egg wet weight	HsueTang1944
Wwb	0.345	0.2539	(0.264)	mg	wet weight at birth	HsueTang1944
Ww2	2.71	2.761	(0.01895)	mg	initial wet weight of instar 2	HsueTang1944, TanaTake1993
Ww3	12.69	13.16	(0.03736)	mg	initial wet weight of instar 3	HsueTang1944, TanaTake1993
Ww4	73.79	71.98	(0.02452)	mg	initial wet weight of instar 4	HsueTang1944, TanaTake1993
Ww5	366.4	339.6	(0.07326)	mg	initial wet weight of instar 5	HsueTang1944, TanaTake1993
Wwj	2504	1448	(0.4216)	mg	pupal wet weight at start spinning	HsueTang1944
WdS	180	110.8	(0.3842)	mg	silk weight per pupa	HsueTang1944
Wwjs	930	1057	(0.1366)	mg	pupal wet weight just after spinning	HsueTang1944
Wwj5	900	963	(0.07001)	mg	pupal wet weight after 5 d	HsueTang1944
Wwe	600	977.1	(0.6284)	mg	imago wet weight at emergence	HsueTang1944
Wwe5	400	977.1	(1.443)	mg	imago wet weight at death	HsueTang1944
Ni	400	273.4	(0.3166)	#	number of eggs laid	HsueTang1944

Uni-variate data
Dataset	Figure	(RE)	Independent variable	Dependent variable	Reference
tWe	see Fig. 1	(0.4482)	age	embryo wet weight	HsueTang1944, TanaTake1993
tJOe	see Fig. 2	(0.5234)	age	embryo O_2 consumption	HsueTang1944, TanaTake1993
tW	see Fig. 3	(0.08799)	time since birth	larva wet weight	HsueTang1944
tJO	see Fig. 4	(0.8229)	time since birth	larva O_2 consumption	HsueTang1944
tWj	see Fig. 5	(0.2448)	time since pupation	pupa wet weight	HsueTang1944
tJOj	see Fig. 6	(0.6053)	time since pupation	pupa O_2 consumption	HsueTang1944

Pseudo-data at Tref
Data	Generalised animal	Bombyx mori	Unit	Description
v	0.02	0.01202	cm/d	energy conductance
kap	0.8	0.8716	-	allocation fraction to soma
kap_R	0.95	0.95	-	reproduction efficiency
p_M	18	26.82	J/d.cm^3	vol-spec som maint
k_J	0.002	0.00145	1/d	maturity maint rate coefficient
kap_G	0.8	0.8057	-	growth efficiency

Facts

• 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)

Discussion

• 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

Bibliography

• [Wiki] http://en.wikipedia.org/wiki/Bombyx_mori.
• [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 bio.vu.nl/thb/deb/deblab/add_my_pet/