Predictions & Data for this entry
| Model: stx | climate: MC, ME | migrate: Mo | phylum: |
| COMPLETE = 2.5 | ecozone: MAN | food: bxM, xiCvf, xiCi | class: |
| MRE = 0.101 | habitat: 0iMc | gender: Dg | order: |
| SMSE = 0.048 | embryo: Tv | reprod: O | family: |
Zero-variate data
| Data | Observed | Predicted | (RE) | Unit | Description | Reference |
|---|---|---|---|---|---|---|
| tg | 348 | 378.5 | (0.08755) | d | gestation time | AnAge |
| tx | 12 | 12.26 | (0.02178) | d | time since birth at weaning | npolar |
| tp | 2190 | 2099 | (0.04155) | d | time since birth at puberty | npolar |
| am | 1.092e+04 | 1.091e+04 | (0.001257) | d | life span | AnAge |
| Lb | 85 | 70.18 | (0.1744) | cm | length at birth | npolar |
| Lp | 137 | 164.3 | (0.1991) | cm | standard length at puberty | MillBurt2001 |
| Wwb | 1e+04 | 1.101e+04 | (0.1013) | g | wet weight at birth | KovaLavi1985 |
| Wwx | 3.5e+04 | 1.168e+04 | (0.6664) | g | wet weight at weaning | KovaLavi1985 |
| Wwi | 1.8e+05 | 1.71e+05 | (0.05022) | g | ultimate wet weight | AnAge |
| Ri | 0.00274 | 0.002734 | (0.00211) | #/d | maximum reprod rate | Wiki |
Uni- and bivariate data
| Data | Figure | Independent variable | Dependent variable | (RE) | Reference |
|---|---|---|---|---|---|
| tL |  | time since birth | total length | (0.06331) | InneStew1981 |
| tW |  | time since birth | wet weight | (0.1652) | InneStew1981 |
| tWx |  | time since birth | wet weight | (0.1424) | KovaLavi1985 |
Pseudo-data at Tref = 20°C
| Data | Generalised animal | Pagophilus groenlandicus | Unit | Description |
|---|---|---|---|---|
| v | 0.02 | 0.03411 | cm/d | energy conductance |
| kap | 0.8 | 0.6783 | - | allocation fraction to soma |
| kap_R | 0.95 | 0.95 | - | reproduction efficiency |
| p_M | 18 | 18.95 | J/d.cm^3 | vol-spec som maint |
| k_J | 0.002 | 0.0006805 | 1/d | maturity maint rate coefficient |
| kap_G | 0.8 | 0.8 | - | growth efficiency |
| t_0 | 0 | 120 | d | time at start development |
| k | 0.3 | 0.2817 | - | maintenance ratio |
Discussion
- Milk was supposed to be 15 times more nutritinous than solid food to capture fast neonate growth till weaning
- In view of low somatic maintenance, pseudodata k_J = 0.002 1/d is replaced by pseudodata k = 0.3
Facts
- 120 days of delayed implantation and 228 days of gestation (Ref: Wiki)
- No sexual dimorphism (Ref: KovaLavi)
- The fat content of phocid seal milk is generally high relative to many other mammalian groups (Ref: KovaLavi)
- the growth rate during weaning appears to be second only to that of the hooded seal Crystophora cristata (Ref: KovaLavi1985)
Acknowledgment
- The creation of this entry was support by the Norwegian Science Council (NFR 255295)
Bibliography