Uncaged pig carcass. Forensic experiment in the ocean. скачать в хорошем качестве

Uncaged pig carcass. Forensic experiment in the ocean.

VISIT OUR OFFICIAL YOUTUBE CHANNEL: OCEAN NETWORKS CANADA    / oceannetworkscanada   Dead pigs are used as models for human decomposition so that we can understand what happens to a body in the ocean and use this to interpret decompositional patterns and rates and as well as the marks left by scavengers, in human death investigations. This video features experiment that was deployed on Feb 26, 2012. Past experiments in this area (Strait of Georgia) showed high shark activity so two pigs were placed; one caged and one exposed. The uncaged pig was attacked by a number of six gill sharks as expected, but fortunately, they did not eat the carcass or drag it away so the experiment was able to continue. Amphipods were a bit slower to colonize, probably due to the shark activity, but the sharks stooped attacking the carcass 24 post submergence and lost interest entirely after 48 h. So the amphipods quickly colonized, going first to the cut surfaces and becoming extremely thick over all of the body and cage area. Again they entered the carcass and ate it from the inside out, slowly deflating it, and rapidly skeletonizing it. As with the caged pig, once the amphipods were gone, the Three Spot Shrimp came in and picked at the bones and cartilage. The frantic activity of the amphipods stirred up the silt underneath the cage so much that you can see many old empty tests or 'shells' of sea urchins exposed under an around the cage. The experiment is led by Dr. Gail Anderson and Dr. Lynne Bell (Simon Fraser University). VENUS is a web-enabled interactive research facility that connects scientists with the ocean. To learn more about VENUS visits www.venus.uvic.ca This video is created by Jackson Chu, a PhD student, Marine Biology (University of Victoria).