Predictions & Data for this entry
| Model: std | climate: MA, MB | migrate: Mo | phylum: |
| COMPLETE = 2.7 | ecozone: MC | food: biCi, biCvf | class: |
| MRE = 0.121 | habitat: 0iMr | gender: D | order: |
| SMSE = 0.038 | embryo: Mv | reprod: O | family: |
Zero-variate data
| Data | Observed | Predicted | (RE) | Unit | Description | Reference |
|---|---|---|---|---|---|---|
| ab | 50 | 38.76 | (0.2249) | d | age at birth | GilmDod1993 |
| tp | 2190 | 1648 | (0.2477) | d | time since birth at puberty for females | ADW |
| tpm | 1642 | 1531 | (0.06765) | d | time since birth at puberty for males | ADW |
| am | 4380 | 4380 | (2.885e-05) | d | life span | AnAge |
| Lb | 10 | 12.81 | (0.2809) | cm | total length at birth | GilmDod1993 |
| Lp | 220 | 269.5 | (0.2249) | cm | total length at puberty for females | fishbase |
| Lpm | 195 | 243.9 | (0.2506) | cm | total length at puberty for males | ADW |
| Li | 330 | 376 | (0.1394) | cm | ultimate total length for females | fishbase |
| Wwb | 9.2 | 9.343 | (0.0155) | g | wet weight at birth | fishbase |
| Wwp | 8.166e+04 | 8.699e+04 | (0.06528) | g | wet weight at puberty for females | fishbase |
| Wwpm | 5.728e+04 | 5.92e+04 | (0.03345) | g | wet weight at puberty for males | fishbase |
| Wwi | 2.69e+05 | 2.363e+05 | (0.1216) | g | ultimate wet weight | fishbase |
| Ri | 2.74 | 2.746 | (0.002359) | #/d | maximum reprod rate at 269 cm | GilmDod1993 |
Uni- and bivariate data
| Data | Figure | Independent variable | Dependent variable | (RE) | Reference |
|---|---|---|---|---|---|
| tL_f |   | time since birth | total length | (0.09818) | CoveKist1991 |
| tL_m | | time since birth | total length | (0.06444) | CoveKist1991 |
| tL_e |  | age | total length | (0.5058) | GilmDod1993 |
Pseudo-data at Tref = 20°C
| Data | Generalised animal | Carcharias taurus | Unit | Description |
|---|---|---|---|---|
| v | 0.02 | 0.05596 | cm/d | energy conductance |
| kap | 0.8 | 0.9246 | - | allocation fraction to soma |
| kap_R | 0.95 | 0.95 | - | reproduction efficiency |
| p_M | 18 | 33.01 | J/d.cm^3 | vol-spec som maint |
| k_J | 0.002 | 0.002 | 1/d | maturity maint rate coefficient |
| kap_G | 0.8 | 0.8013 | - | growth efficiency |
Discussion
- Males are assumed to differ from females by {p_Am} only
- Although the reproduction rate is high, due to sibling cannibalism, only 1 pup of 1 m is produced each 2 yr
- Life span of 12 yr seems too short, compared to other sharks
- The fit ignors embryo data that show a low length at high age
- Early juvenile data are underestimated, probably by ignoring gut contents
Facts
- Preferred temp 26 C (Ref: fishbase)
- Depth: 0 - 60 m (Ref: ADW)
- Weight (g) - length (cm): Ww = 0.0106 * L^2.940 (Ref: fishbase)
Bibliography