Acyrthosiphon pisum (Pea aphid):  

Predictions & Data for this entry

Model:  abp  

COMPLETE = 2.5
MRE = 0.114
SMSE = 0.166

Zero-variate data
DataObservedPredicted(RE)UnitDescriptionReference
ab 10 4.882 (0.5118)dage at birthShinSisk2003
tp 9 8.763 (0.02638)dtime since birth at pubertySequ1991
am 30 30.1 (0.003255)dlife spanWiki
Lb0.14 0.1351 (0.0353)cmtotal length at birthguess
Lp0.4 0.4103 (0.02563)cmtotal length at pubertyWiki
Wdb0.042 0.03703 (0.1184)mgdry weight at birthSequ1991
Wdp 1 1.038 (0.03775)mgdry weight at pubertySequ1991
Ri 12 10.11 (0.1578)#/dmaximum reprod rateWiki
Uni-variate data
DatasetFigure(RE)Independent variableDependent variableReference
tW see Fig. 1 (0.1076)time since birthdry weightSequ1991
Pseudo-data at Tref
DataGeneralised animalAcyrthosiphon pisumUnitDescription
v 0.02 0.031cm/denergy conductance
kap 0.8 0.7641-allocation fraction to soma
kap_R 0.95 0.95-reproduction efficiency
p_M 18 17.64J/d.cm^3vol-spec som maint
k_J 0.002 0.0021/dmaturity maint rate coefficient
kap_G 0.8 0.7994-growth efficiency
g 1 0.8765-energy investment ratio

Facts

  • parthenogenetic, sexual eggs overwinter and hatch into females (ref: Sequ1991)
  • nymphs hatch and reach maturity in 4 moults (ref: Sequ1991)
  • Besides differences between sexual and parthenogenetic morphs, winged and wingless morphs exist (ref: Wiki)
  • A. pisum hosts primary endosymbiont Buchnera aphidicola, for synthesis of amino acids, required for reproduction; Buchnera is transmitted from mothers to offspring, A. pisum also hosts a range of facultative bacterial symbionts that can be transmitted maternally and horizontally (ref: Wiki)
  • diapauze is temp independent (ref: ShinSisk2003)
  • growth rate of asexually-produced embryos approximately doubles between 5C and 10C and between 10C and 16C: T_A = 10.5 kK (ref: ShinSisk2003)

Discussion

  • Allocation to reproduction is here assumed to occur in the final instar only, but this is questionable
  • Pseudodata g = 1 is added to avoid convergence to very low g with very high z

Bibliography

  • Wiki
  • Kooy2010
  • Sequ1991
  • ShinSisk2003

Bibtex files with references for this entry


Bas Kooijman, 2013/01/14 (last modified by Bas Kooijman 2016/04/13)

accepted: 2016/02/19

refer to this entry as: AmP Acyrthosiphon pisum version 2016/02/19 bio.vu.nl/thb/deb/deblab/add_my_pet/