|
OceanDocs >
Africa >
African Marine Science - Oceanography - Fishery >
Miscellaneous >
Please use this identifier to cite or link to this item:
http://hdl.handle.net/1834/376
|
| Title: | Depuration and transformation of PSP toxins in the South African abalone Haliotis midae |
| Authors: | Roesler, C.S.
Pitcher, G.C.
Etheridge, S.M. |
| Issue Date: | 2003 |
| Abstract: | Abalone were grown: on diets of 1) artificial feed, 2) kelp, their in situ food source, which contained saxitoxin
(STX) derivatives, and 3) in filtered seawater without a food source, to investigate the depuration and transformation
of toxins under feeding and starving conditions. The abalone were toxic at the start of each treatment (~160 µg STX
eq 100 g-1 tissue). They depurated at a rate of 6.27 µg STX eq 100 g-1 tissue d-1 over the 2 week incubation period
when fed artificial feed; however, no depuration was observed in starved or kelp-fed animals. Toxin transformations
occurred in abalone for each treatment. Toxin derivatives decreased in organisms fed artificial feed, and no B1 was
detected during this treatment. Toxin composition was not significantly different between starved and kelp-fed
treatments. For these abalone, neoxanthin (NEO) and B1 derivatives increased, whereas gonyautoxin (GTX)-2+3
decreased. The need for including non-traditional vectors such as abalone in routine monitoring programs is clearly
evident. |
| URI: | http://hdl.handle.net/1834/376 |
| Appears in Collections: | Miscellaneous
|
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.
|
