Chaoborus americanus (Glassworm):  

Predictions & Data for this entry

Model:  hep  

MRE = 0.210
SMSE = 0.330

Zero-variate data
ab 2 1.799 (0.1006)dage at birthFedoSwif1972
tj240 244 (0.01657)dtime since birth at pupationFedoSwif1972
am 4 4 (6.656e-05)dlife span as imagochebucto
Lb0.2 0.14 (0.3)cmlength at birthFedoSwif1972
Lj1.6 2.289 (0.4309)cmlength at pupaptionFedoSwif1972
Wd00.251 0.2944 (0.1728)mugegg dry weightLehm1998
Wdb0.006 0.0001657 (0.9724)mgdry weight at birthFedoSwif1972
Wdj0.7 0.7248 (0.03537)mgdry weight at pupationFedoSwif1972
Ni160 157.5 (0.0157)#/dmaximum reprod rateFedoSwif1972
Uni-variate data
DatasetFigure(RE)Independent variableDependent variableReference
tW see Fig. 1 (0.05683)timedry weightFedoSwif1972
Pseudo-data at Tref
DataGeneralised animalChaoborus americanusUnitDescription
v 0.02 0.0216cm/denergy conductance
kap 0.8 0.9981-allocation fraction to soma
kap_R 0.95 0.95-reproduction efficiency
p_M 18 68.84J/^3vol-spec som maint
k_J 0.002 0.0021/dmaturity maint rate coefficient
kap_G 0.8 0.8083-growth efficiency


  • C. americanus lives mainly as a larvea with 4 instar stadia (ref: FedoSwif1972)
  • At emergence it lives for a few more days without eating and lays eggs. In its larval stage it is benthic (ref: Wiki)
  • Chaoborus has a one year life cycle; body length of instar IV can grow from 9 to 12 mm. (ref: FedoSwif1972)
  • Chaoborus larva has modified antennae with which is can grap small prey, such as crustaceans, chironomid larvae, olichochaetes (ref: chebucto, Wiki)


  • Model hep was fitted, since little is known about pupal development
  • Chaoborus larvae have an aspect ratio of 0.08 (estimated from photos), so wet weight (g) relates to length (cm) as 0.0157*L^3 (using cylinder shape). A 1.6 cm larva has a dry weight of 0.7 mg and a wet weight of 41 mg. The dry/wet weight ratio is about 0.017, which has been used.


  • Wiki
  • Kooy2010
  • FedoSwif1972
  • chebucto
  • Lehm1998

Bibtex files with references for this entry

Jan Baas, Bas Kooijman, 2014/05/05 (last modified by Bas Kooijman 2016/02/16)

accepted: 2016/11/01

refer to this entry as: AmP Chaoborus americanus version 2016/11/01