Predictions & Data for this entry
| Model: abj | climate: MC | migrate: Mo | phylum: |
| COMPLETE = 2.6 | ecozone: MAN | food: bjPz, jiCi, jiCvf | class: |
| MRE = 0.163 | habitat: 0jMp, jiMd | gender: D | order: |
| SMSE = 0.083 | embryo: Mp | reprod: O | family: |
Zero-variate data
| Data | Observed | Predicted | (RE) | Unit | Description | Reference |
|---|---|---|---|---|---|---|
| ab | 9 | 9.355 | (0.03946) | d | age at birth | fishbase |
| ap | 1460 | 941.6 | (0.3551) | d | age at puberty for female | ICES |
| am | 9125 | 9174 | (0.005331) | d | life span | fishbase |
| Lp | 39.1 | 23.37 | (0.4023) | cm | total length at puberty | fishbase |
| Li | 130 | 116.4 | (0.1049) | cm | ultimate total length | fishbase |
| Wwb | 0.0009 | 0.0007694 | (0.1451) | g | wet weight at birth | fishbase |
| Wwp | 543 | 262.4 | (0.5168) | g | wet weight at puberty | fishbase |
| Wwi | 3.2e+04 | 3.238e+04 | (0.01192) | g | ultimate female wet weight | fishbase |
| Ri | 7123 | 6208 | (0.1285) | #/d | reprod rate at 75 cm or 3.2 kg | Wiki |
Uni- and bivariate data
| Data | Figure | Independent variable | Dependent variable | (RE) | Reference |
|---|---|---|---|---|---|
| tL_1995 |   | time since birth | total length | (0.03807) | BollRijn2004 |
| tL_1200 | | time since birth | total length | (0.0456) | BollRijn2004 |
Pseudo-data at Tref = 20°C
| Data | Generalised animal | Pollachius virens | Unit | Description |
|---|---|---|---|---|
| v | 0.02 | 0.1303 | cm/d | energy conductance |
| p_M | 18 | 17.54 | J/d.cm^3 | vol-spec som maint |
| k_J | 0.002 | 0.002 | 1/d | maturity maint rate coefficient |
| k | 0.3 | 0.5975 | - | maintenance ratio |
| kap | 0.8 | 0.5508 | - | allocation fraction to soma |
| kap_G | 0.8 | 0.7983 | - | growth efficiency |
| kap_R | 0.95 | 0.95 | - | reproduction efficiency |
Discussion
- FEMALE total length at maturity is decreasing over time: we chose lowest in North Sea dataset (2008)
- males are assumed not to differ from females
Facts
- Preferred temperature 6 C (Ref: fishbase)
- Females are slightly larger than males and mature later, but differences are small (Ref: ICES)
- Semi-pelagic species that is not bound to a demersal life style (Ref: ICES)
- Length-Weight relationship: W in g = 0.0238 * (L in cm)^2.7374 (Ref: ICES)
Bibliography