Notacanthus chemnitzii (Snub-nosed spiny eel):  

Predictions & Data for this entry

Model:  ssj  

COMPLETE = 1.5
MRE = 0.089
SMSE = 0.091

Zero-variate data
DataObservedPredicted(RE)UnitDescriptionReference
tj1095 984.8 (0.1006)dtime since birth at metamorphosis from leptocephaluys to juvenileVediOrlo2016
tp6570 6170 (0.06092)dtime since metam at puberty VediOrlo2016
am1.095e+04 1.095e+04 (5.708e-06)dlife spanVediOrlo2016
Lj 10 11.3 (0.1297)cmtotal length at metamguess
Lp 55 60.26 (0.09569)cmtotal length at puberty for femalesVediOrlo2016
Li122 123.5 (0.01254)cmultimate total lengthVediOrlo2016
Wwb0.00052 0.0004997 (0.03912)gwet weight at birthguess
Ri274 263.7 (0.03743)#/dmaximum reprod rateguess
Uni-variate data
DatasetFigure(RE)Independent variableDependent variableReference
tL_f see Fig. 1 (0.1791)time since metamtotal lengthVediOrlo2016
tL_m see Fig. 1 (0.1448)time since metamtotal lengthVediOrlo2016
LW see Fig. 2 (0.1828)total lengthwet weightVediOrlo2016
Pseudo-data at Tref
DataGeneralised animalNotacanthus chemnitziiUnitDescription
v 0.02 0.01892cm/denergy conductance
kap 0.8 0.9-allocation fraction to soma
kap_R 0.95 0.95-reproduction efficiency
p_M 18 17.36J/d.cm^3vol-spec som maint
k_J 0.002 0.0021/dmaturity maint rate coefficient
kap_G 0.8 0.7999-growth efficiency

Facts

  • Leptocephalus larva lives in surface waters and can become larger than the adult, which lives 120 till 4900 m deep (ref: Wiki)
  • feeds on sea anemones, molluscs and echinoderms (ref: Wiki)
  • Duration of the leptocephalus-stage is unkown, 3 yrs in related species (ref: VediOrlo2016)

Discussion

  • Males are not assumed to differ from females; VediOrlo2016 give tp=18yr at Lp=55cm for females and tp=14yr at Lp=66cm for males, while the scanty data do not support enough growth differences between sexes; Lm=122cm(unsexed) is 20 cm more than their max observed length
  • temperatures are guessed, based on deep water occurence

Bibliography

  • Wiki
  • Kooy2010
  • VediOrlo2016
  • fishbase

Bibtex files with references for this entry


Bas Kooijman, 2017/03/29

accepted: 2017/03/29

refer to this entry as: AmP Notacanthus chemnitzii version 2017/03/29 bio.vu.nl/thb/deb/deblab/add_my_pet/