Sterechinus neumayeri (Antarctic sea urchin):  

Predictions & Data for this entry

Model:  abj  

COMPLETE = 3.0
MRE = 0.150
SMSE = 0.149

Zero-variate data
DataObservedPredicted(RE)UnitDescriptionReference
ab 21 19.34 (0.079)dage at birthBoscBeau1987
ab_T 17 14.99 (0.1182)dage at birthBoscBeau1987
tj115 95.41 (0.1703)dtime since birth at metamorphosisBoscBeau1987
am1.46e+04 1.465e+04 (0.00376)dlife spanBreyPear1995
Lb0.035 0.02907 (0.1693)cmlength from aboral apex to tips of postoral arms of echinopluteiBoscBeau1987
Lj0.044 0.08305 (0.8875)cmdiameter of newly metamorphosised benthic juvenileBoscBeau1987
Lp2.04 2.04 (0.0001392)cmdiameter of test at pubertyguess
Li7.023 7.222 (0.02834)cmultimate diameter of testBreyPear1995
Wd04.49e-09 2.779e-08 (5.19)gCN mass of fertilised eggMarsLeon1999
Ww01.767e-06 5.234e-07 (0.7038)gwet weight of eggBoscBeau1987
Wdb5.21e-09 2.011e-08 (2.861)gCN mass of pluteus larvaMarsLeon1999
Wi129 134.2 (0.04019)gwet weight adult, including gonadsPearGies1966
GSI0.1 0.09927 (0.007346)(Ww_gonad*100)/Ww_wholegonadal somatic indexPearGies1966
Uni-variate data
DatasetFigure(RE)Independent variableDependent variableReference
tLe_T1 see Fig. 1 (0.2797)agediameter of lavaBoscBeau1987
tLe_T2 see Fig. 1 (0.2901)agediameter of lavaBoscBeau1987
tJOe see Fig. 2 (9.974)ageO_2 consumptionMarsLeon1999
tL_f0 see Fig. 3 (0.05236)time since birthlength of echinopluteiMarsLeon1999
tL_fa see Fig. 3 (0.04933)time since birthlength of echinopluteiMarsLeon1999
tL_f1 see Fig. 3 (0.175)time since birthlength of echinopluteiMarsLeon1999
tWd_f0 see Fig. 4 (3.549)ageCN massMarsLeon1999
tWd_fa see Fig. 4 (4.533)ageCN massMarsLeon1999
tWd_f1 see Fig. 4 (3.021)ageCN massMarsLeon1999
tJO_f0 see Fig. 5 (10.21)ageO_2 consumptionMarsLeon1999
tJO_f1 see Fig. 5 (18.89)ageO_2 consumptionMarsLeon1999
tL see Fig. 6 (0.1504)age since birthtest diameterBreyPear1995
LWw see Fig. 7 (0.05335)test diameterwet weightBAS_data
TJO see Fig. 8 (1.001)temperatureO_2 consumption per wet weightBelmGies1974
Pseudo-data at Tref
DataGeneralised animalSterechinus neumayeriUnitDescription
v 0.02 0.003742cm/denergy conductance
kap 0.8 0.6749-allocation fraction to soma
kap_R 0.95 0.85-reproduction efficiency
p_M 18 8.483J/d.cm^3vol-spec som maint
k_J 0.002 0.0021/dmaturity maint rate coefficient
kap_G 0.8 0.7984-growth efficiency

Facts

  • Stomadeal breakthrough occurs 20 days after fertilisation at approx. -1.5 degrees celcius - soon after larvae begins feeding (ref: BoscBeau1987)
  • Mean jaw size/test diameter ratio varies from 0.200 and 0.247 (ref: BreyPear1995)
  • Oogenesis requires ~2 years (ref: PearBosc1991)
  • Asymptotic test diameter estimates range from 35 to 70.2mm (ref: Broc2001, BreyPear1995)
  • Gametogenic cycle lasting 18 to 24 mo, characterised by spawning events in late winter/early summer (ref: Broc2001)
  • Spermatogenesis cycle lasts 12 mo, spawning from Nov onwards (ref: Broc2001)

Discussion

  • Larval length growth in absence of food is still positive, possibly due to bacteria and/or organic C in water; change in shape might also contribute
  • Bas: Reserve might contribute to length in pre-birth length data
  • Bas: notice that Wd0 and Wdb are over-predicted, but Ww0 and t-Wd_f is underpredicted; Ww0/Wd0 = 400! Inconsistent data
  • Bas: Wd0, Wdb, respiration and t-Wd_f data are given zero weight in regression
  • Bas: refs PearBosc1991 and BelmGies1974 are missing; can you say more about BAS_data?

Bibliography

  • Wiki
  • Kooy2010
  • BoscBeau1987
  • BreyPear1995
  • Broc2001
  • MarsLeon1999
  • PearGies1966
  • BAS_data
  • PearBosc1991
  • BelmGies1974

Bibtex files with references for this entry


Rose Stainthorp, 2015/04/20 (last modified by Rose Stainthorp 2017/05/23)

accepted: 2017/07/06

refer to this entry as: AmP Sterechinus neumayeri version 2017/07/06 bio.vu.nl/thb/deb/deblab/add_my_pet/