Predictions & Data for this entry
| Model: abj | climate: MB, MC | migrate: | phylum: |
| COMPLETE = 2.5 | ecozone: MAE, MAm | food: bjPz, jiCi, jiCvf | class: |
| MRE = 0.083 | habitat: 0jMc, jiMb | gender: D | order: |
| SMSE = 0.055 | embryo: Mc | reprod: Os | family: |
Zero-variate data
| Data | Observed | Predicted | (RE) | Unit | Description | Reference |
|---|---|---|---|---|---|---|
| ab_22 | 37 | 12.62 | (0.6588) | d | age at birth | CaveDoma1999 |
| ab_18 | 47 | 18.06 | (0.6157) | d | age at birth | IgleOter2004 |
| ts | 40 | 44.99 | (0.1247) | d | time since birth at settlement | IgleOter2004 |
| tp | 150 | 144.7 | (0.0353) | d | time since birth at puberty | SilvSobr2002 |
| am | 240 | 260.1 | (0.08395) | d | life span | IgleOter2004 |
| Lb | 0.15 | 0.1453 | (0.03101) | cm | mantle length at birth | IgleSanc2007 |
| Wdb | 0.00034 | 4.908e-05 | (0.8556) | g | dry weight at birth | IgleOter2004, VillRiba2004 |
| Wds | 0.0095 | 0.009342 | (0.01668) | g | dry weight at settlement | IgleOter2004 |
| Wwp | 1000 | 921.8 | (0.07818) | g | wet weight at puberty | SilvSobr2002 |
| Wwi | 1800 | 1835 | (0.01962) | g | ultimate wet weight | IgleOter2004 |
| Ni | 1.12e+05 | 1.107e+05 | (0.01197) | # | cum reprod at death | IgleOter2004 |
Uni- and bivariate data
| Data | Figure | Independent variable | Dependent variable | (RE) | Reference |
|---|---|---|---|---|---|
| tWd_para1 |   | time since birth | dry weight | (0.2775) | IgleOter2004 |
| tWd_para2 | | time since birth | dry weight | (7.49) | CarrArro2006 |
| tL_para2 |  | time since birth | mantle length | (0.2753) | CarrArro2006 |
| tW |  | time since birth | wet weight | (0.2754) | IgleOter2004 |
Pseudo-data at Tref = 20°C
| Data | Generalised animal | Octopus vulgaris | Unit | Description |
|---|---|---|---|---|
| v | 0.02 | 0.01275 | cm/d | energy conductance |
| p_M | 18 | 55.64 | J/d.cm^3 | vol-spec som maint |
| k_J | 0.002 | 0.002 | 1/d | maturity maint rate coefficient |
| k | 0.3 | 0.1936 | - | maintenance ratio |
| kap | 0.8 | 0.9941 | - | allocation fraction to soma |
| kap_G | 0.8 | 0.8158 | - | growth efficiency |
| kap_R | 0.95 | 0.95 | - | reproduction efficiency |
Discussion
- z is not well-fixed by data, size ultimate size is much larger than size at death
- in view of fitting results, puberty does not coincide with mating and part of structure converts to eggs just before death
- model abj has been used, meaning that settlement has no effect on acceleration
Facts
- semelparous: death at first spawning, female ventilates eggs and dies after hatching; No food intake during this period (Ref: Wiki)
- small eggs with a planktontic larval stage (Ref: Wiki)
- males and females grow at the same rate; males mature before females (Ref: Wiki)
Bibliography