Predictions & Data for this entry

Model: std climate: MB, MC migrate: phylum:
COMPLETE = 2.5 ecozone: MAE, MAm food: biCi, biCvf class:
MRE = 0.071 habitat: 0iMpe gender: D order:
SMSE = 0.012 embryo: Mv reprod: O family:

Zero-variate data

Data Observed Predicted (RE) Unit Description Reference
ab 292 369.5 (0.2656) d age at birth guess
tp 1350 1848 (0.369) d time since birth at puberty AnAge
am 7665 7653 (0.001512) d life span AnAge
Lb_DW 8 8.022 (0.002812) cm disc width at birth Wiki
Lb 20 13.54 (0.3228) cm total length at birth Wiki
Lp_DWf 31 34.83 (0.1236) cm disc width at puberty for females YigiIsme2012
Lp_f 62.5 58.81 (0.05908) cm total length at puberty for females YigiIsme2012
Lp_DWm 29 31.95 (0.1017) cm disc width at puberty for males YigiIsme2012
Lp_m 62.5 53.94 (0.137) cm total length at puberty for fmales YigiIsme2012
Li_DWf 140 74.27 (0.4695) cm ultimate disc width wiki
Ri 0.03397 0.03422 (0.007396) #/d maximum reprod rate Wiki

Uni- and bivariate data

Data Figure Independent variable Dependent variable (RE) Reference
tL_f Data for females, males time since birth total length (0.05582) YigiIsme2012
tL_m Data for females, males time since birth total length (0.05167) YigiIsme2012
LW_f total length weight (0.2402) YigiIsme2012
LW_m total length weight (0.2699) YigiIsme2012
LL_f total length disc width (0.04013) YigiIsme2012
LL_m total length disc width (0.0458) YigiIsme2012

Pseudo-data at Tref = 20°C

Data Generalised animal Dasyatis pastinaca Unit Description
v 0.02 0.01324 cm/d energy conductance
kap 0.8 0.9363 - allocation fraction to soma
kap_R 0.95 0.95 - reproduction efficiency
p_M 18 74.3 J/d.cm^3 vol-spec som maint
k_J 0.002 0.004046 1/d maturity maint rate coefficient
kap_G 0.8 0.797 - growth efficiency
k 0.3 0.2859 - maintenance rate coef.

Discussion

  • males and females are assumed to differ in {p_Am} only
  • temperatures are guessed
  • expected age at birth of 707 d seems very long; relative growth is still fast at 16 yr, while life span is 21 yr; absolute growth is very slow. This questions aging method

Facts

  • mother feeds neonates with uterine milk (Ref: fishbase)

Bibliography

Citation