which have a chemical structure consisting of
a common quinazolinic derivative with different associated
ions. The toxin is especially accumulated in the fish skin and
gonads and in the mollusk intestine and liver, and its level
increases by bioaccumulation throughout the food chain
from micro-algae to humans. While toxins do not affect
fishes [6], humans can be affected. Tetrodotoxin (TTX) is
considered the most lethal toxin originating in the marine
environment. Its name comes of the Tetraodontidae family,
but it was later found in other fishes and mollusks [15].
We present the case of a man who ingested a contaminated
trumpet shellfish captured in the southern coast of
Europe with large concentrations of TTX.