Table 6
Additional settlement related factors considered during the boruta regression tree analysis of larval crashes and mortality. Factors related to broodstock and larval growth stage listed in Table 5 were also considered. Significant predictors are listed in order of importance from top to bottom. *** indicates the term retained as significant in the general linear model at the <0.001 significance level. The full model is given in Table S3.
| Possible predictors of hatchery crashes, in addition to those already listed in Table 5 | Significant predictors of: | ||
|---|---|---|---|
| Settlement related factors | Settlement failure | Percent settled in successful batches | |
| Duration larval tank | Batch, flow-through, or RAS? | % mortality during larval growth stage | Number of larvae in release*** |
| Number larvae in settlement tank (x 1000) | Use of air pumps during settlement | Duration larval tank | Broodstock origin |
| Feed delivery frequency settlement tank (continuous, or days) | Frequency of settlement tank cleaning | Larval density at transfer to settlement tank | |
| Larval density at transfer to settlement tank | Cultch soak time (days) | Broodstock density | |
| % mortality during larval growth stage | Broodstock origin | ||
| Use of air pumps during settlement | |||
| Temperature larval tank | |||
| Temperature conditioning end point | |||
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