Table 3.
Fraction of adult population in each age class for a Northern cod population experiencing various hypothetical levels of annual adult mortalit
| Age class | Adult survival | |||
|---|---|---|---|---|
| 0.82 | 0.72 | 0.62 | 0.52 | |
| 7 | 0.192 | 0.291 | 0.388 | 0.490 |
| 8 | 0.157 | 0.209 | 0.241 | 0.255 |
| 9 | 0.129 | 0.151 | 0.149 | 0.132 |
| 10 | 0.106 | 0.109 | 0.093 | 0.069 |
| 11 | 0.087 | 0.078 | 0.057 | 0.036 |
| 12 | 0.071 | 0.056 | 0.036 | 0.019 |
| 13+ | 0.258 | 0.106 | 0.036 | –* |
The first column shows data for the reference population (cod life table #2, for which annual adult survival = 0.82) from Hutchings (2011), as modified by Waples et al. (2013). The other columns depict results for hypothetical populations with the same age‐specific fecundity relationship but different rates of adult survival that reflect natural mortality + fishing mortality.
*In this scenario, maximum age was truncated to ω = 12 based on the rules described in the text.