Table 1. Monoamine concentrations in the gonads, pedal and cerebroid ganglia of mussels collected from the Bouknadel site.
| Physiological variation of monoamines with respect to the reproductive cycles in the gonads and pedal or cerebroid ganglia of mussels at the Boukanadel site. | ||||
|---|---|---|---|---|
| July (Resting) | September (St I + II) | March (St IIIA) | April (egg-laying) | |
| NA gonads | 128 ± 10.2 | 457 ± 34.2 | 304 ± 49 | 62.5 ± 4.5 |
| NA pedal g | 118 ± 31 | 227 ± 30 | 246 ± 44.5 | 70 ± 6.6 |
| NA cerebroid g | 90.7 ± 12 | 73 ± 9 | 55 ± 2.8 | 116 ± 13.6 |
| DA gonads | 15 ± 1 | 64 ± 3.4 | 241 ± 81 | 62.5 ± 4.5 |
| DA pedal g | 65.5 ± 11.9 | 125 ± 15.2 | 227 ± 54 | 450 ± 98.8 |
| DA cerebroid g | 158 ± 12.7 | 227 ± 19 | 132 ± 10.6 | 730 ± 46 |
| DOPAC gonads | 82 ± 11 | 157 ± 23 | 76 ± 19 | 64 ± 17 |
| DOPAC pedal g | 30 ± 5.6 | 59 ± 15 | 122 ± 55 | 18 ± 2.5 |
| DOPAC cerebroid g | 68 ± 14 | 28 ± 6.7 | 30.7 ± 6.6 | 122 ± 60 |
| HVA gonads | 77 ± 40 | 49 ± 25 | 51 ± 22 | 37 ± 12 |
| HVA pedal g | 14 ± 3.9 | 9 ± 4.6 | 7.8 ± 2.5 | 5.3 ± 2.7 |
| HVA cerebroid g | 8.3 ± 3.6 | 46.4 ± 13.6 | 13.2 ± 4 | 17.5 ± 4.2 |
| 5-HT gonads | 8.7 ± 0.6 | 31 ± 5.7 | 142 ± 49.6 | 142 ± 14.3 |
| 5-HT pedal g | 74 ± 16 | 115 ± 19.9 | 293 ± 54 | 302 ± 47 |
| 5-HT cerebroid g | 51 ± 7 | 61 ± 6.5 | 63 ± 7 | 150 ± 9 |
| 5-HIAA gonads | 188 ± 36 | 443 ± 70 | 29 ± 6 | 51 ± 5 |
| 5-HIAA pedal g | 79 ± 22 | 122 ± 30 | 166 ± 46 | 56 ± 15.8 |
| 5-HIAA cerebroid g | 56 ± 30 | 11.2 ± 1.4 | 46.5 ± 12 | 83 ± 39.5 |
Concentrations of NA, DA, 5-HT and the metabolites DOPAC, HVA and 5-HIAA were measured by HPLC assays and correspond to eight independent measurements for each period of the year. Each measurement was made on 5 mussels. The results correspond to the mean ± sem of the eight independent measurements.