Table 4.
Cellular toxicity of saxitoxin derivatives (fg STX eq. cell−1) from culture experiments conducted with the Bay of Fundy (CCMP2304) Alexandrium strain.
| Saxitoxin derivatives fg STX eq cell−1 | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| C1, C2 | Neo | dcSTX | STX | GTX1, 4 | GTX5 | dcGTX2, 3 | GTX2, 3 | Total | |
| Experiment #5 | |||||||||
| 390μatm | 275 (50) | 590 (1) | n.d. | 1646 (309) | 74 (18) | 21 (8) | 4 (2) | 447 (81) | 2861 (791) |
| 800μatm | 202 (77) | 397 (65) | n.d. | 1226 (185) | 80 (22) | 18 (5) | 5 (1) | 328 (105) | 2255 (453) |
| Experiment #6 | |||||||||
| 390μatm | 178 (47) | 842 (153) | n.d. | 1682 (306) | 729 (134) | 9 (2) | 6 (2) | 1414 (291) | 4860 (913) |
| 1600μatm | 221 (38) | 964 (254) | n.d. | 1608 (261) | 1113 (297) | 7 (1) | 8 (2) | 1599 (351) | 5521 (1190) |
Values represent the mean (SD) of triplicate or quadruplicate measurements. Asterisks indicate significant differences (p<0.05) between treatments and the control (~390μatm).