Table 4.
Variables measured in response to a second administration of hormones 24 to 48 hrs after the first set of treatments include the number and percentage of spawning toads, the number of eggs, percentage fertilization, number of neurulas, percentage neurulation, and total number of neurulas. Data in the table are expressed as Means ± SE and ranges of spawning toads.
| Treatment | Treatment | % Spawn | No. oocytes | % cleavage | Neurulas | % neurulation | Total neurulas |
| 8 | 500 IU hCG + 4 μg LHRHa | 0/7 0% | NA | NA | NA | NA | NA |
| 9 | 60 μg LHRHa | 0/7 0% | NA | NA | NA | NA | NA |
| 10 | 60 μg LHRHa | 0/7 0% | NA | NA | NA | NA | NA |
| 11 | 60 μg LHRHa | 1/7 14% | 200 | 87% | 0 | 0% | 0 |
| 12 | 500 IU hCG | 3/7 42% | 68 ± 50 (13–110) | 0% | 0 | 0% | 0 |
| 13 | 500 IU hCG | 2/7 29% | 160 ± 28 (60–100) | 0% | 0 | 0% | 0 |
| 14* | 60 μg LHRHa | 0/5 0% | NA | NA | NA | NA | NA |