These Crime Solvers are Real Pigs
Saturday, November 8, 2014 | Categories:
Listen http://www.cbc.ca/quirks/2014/11/08/2014-11-08-2/#
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Forensic scientists use submerged pig carcasses to help them understand the effects of water on the decomposition of human remains. Pigs are a good substitute for human bodies because they contain similar bacteria, their skin is the same and they can provide the same body size. But new research by Dr. Gail Anderson http://www.sfu.ca/~ganderso/ , a Professor and Co-Director of the Centre For Forensic Research at Simon Fraser University in Vancouver, has found that the oxygen content of the water also plays an important role. Her experiment was conducted in B.C.'s Saanich Inlet, a body of water known for very low to almost zero oxygen levels. The carcass took longer to decompose when the level of oxygen was low because scavengers - including crab, shrimp and squat lobsters - find it stressful to survive in such conditions. This knowledge can help forensic scientists and criminologists in the search for human remains in similar conditions.
Related Links
Paper in PLoS One http://www.plosone.org/article/info:doi/10.1371/journal.pone.0110710
Simon Fraser University release http://www.sfu.ca/sfunews/stories/2...gen-levels-may-impact-scavenger-response.html
Ocean Networks Canada - Forensic Investigations, CSI Salish Sea http://www.oceannetworks.ca/csi-salish-sea
National Geographic story http://phenomena.nationalgeographic.com/2014/10/29/the-undersea-afterlives-of-three-little-piggies/
Saturday, November 8, 2014 | Categories:
Listen http://www.cbc.ca/quirks/2014/11/08/2014-11-08-2/#
download http://cbc.ca/quirks/media/2014-2015/qq-2014-11-08_02.mp3
<iframe width="640" height="360" src="//www.youtube.com/embed/xXtSw1FPkhM" frameborder="0" allowfullscreen></iframe>
Forensic scientists use submerged pig carcasses to help them understand the effects of water on the decomposition of human remains. Pigs are a good substitute for human bodies because they contain similar bacteria, their skin is the same and they can provide the same body size. But new research by Dr. Gail Anderson http://www.sfu.ca/~ganderso/ , a Professor and Co-Director of the Centre For Forensic Research at Simon Fraser University in Vancouver, has found that the oxygen content of the water also plays an important role. Her experiment was conducted in B.C.'s Saanich Inlet, a body of water known for very low to almost zero oxygen levels. The carcass took longer to decompose when the level of oxygen was low because scavengers - including crab, shrimp and squat lobsters - find it stressful to survive in such conditions. This knowledge can help forensic scientists and criminologists in the search for human remains in similar conditions.
Related Links
Paper in PLoS One http://www.plosone.org/article/info:doi/10.1371/journal.pone.0110710
Simon Fraser University release http://www.sfu.ca/sfunews/stories/2...gen-levels-may-impact-scavenger-response.html
Ocean Networks Canada - Forensic Investigations, CSI Salish Sea http://www.oceannetworks.ca/csi-salish-sea
National Geographic story http://phenomena.nationalgeographic.com/2014/10/29/the-undersea-afterlives-of-three-little-piggies/
