| Main Ref. | Weis, J. and P. Weis, 1989 |
| Data Ref. | Le Blanc, G. and J. Dean, 1984 |
| Abnormality | Decreased hatch |
| Locality | N/A |
| Season | N/A |
| Prevalence | N/A |
| Stressor | Thorium |
| Concentration | 350 ppb |
| Observation | Lab |
| Remarks | A survey of investigations on the effects of exposure of fertilized eggs to aquatic toxicants. |