Saturday, October 14, 2006

How to: Milk a brown recluse spider

Loxosceles sp.'s venom can be "milked" (extracted) in more than a way:

a) Kill the spider, dissect its fangs and the venom glands just below the fangs, crush them in a mortar. The result is a crude venom, contaminated with hemolymph (spider's blood) that is venemous by itself. You will need to catch more spiders next time you need venom.

b) Take the spider out of its container, hold the legs from one side (all of them, otherwise the spider will self-mutilate and escape). Flip the spider and stimulate with low voltage around the fangs. Electricity will make muscle fibers around the gland to contract. Collect the venom with a capillary tube. Put the spider back in its container. As described, the procedure is extremely dangerous, the spider can easily bite you. Its venom may cause skin necrosis, hemolysis, renal failure and death. I milked Loxosceles this way when I was young, and can only explain this self-destructive male adolescent behavior -disguised as scientific project- as a consequence of sexual repression.

c) Anesthesize the spider exposing it to 100% CO2 for a 1-2 minutes. Proceed as in b) without any risk of being bitten.