Cone snail species off the Brazilian coast and their venoms: a review and update.

The genus includes over 900 species of marine invertebrates known as cone snails, whose venoms are among the most powerful described so far. This potency is mainly due to the concerted action of hundreds of small bioactive peptides named conopeptides, which target different ion channels and membrane receptors and thus interfere with crucial physiological processes. By swiftly harpooning and injecting their prey and predators with such deadly cocktails, the slow-moving cone snails guarantee their survival in the harsh, competitive marine environment.

Preliminary report on the hemagglutinating activity of the Scorpaena plumieri fish venom.

The scorpionfish Scorpaena plumieri is one of the most venomous fish species in the Brazilian coast. Amongst many biological activities, the S. plumieri fish venom (SpV) promotes hemagglutination.

Fish Cytolysins in All Their Complexity.

The majority of the effects observed upon envenomation by scorpaenoid fish species can be reproduced by the cytolysins present in their venoms. Fish cytolysins are multifunctional proteins that elicit lethal, cytolytic, cardiovascular, inflammatory, nociceptive, and neuromuscular activities, representing a novel class of protein toxins. These large proteins (MW 150-320 kDa) are composed by two different subunits, termed α and β, with about 700 amino acid residues each, being usually active in oligomeric form.