Page 5 of 5

Re: The Pesticide Matrix

PostPosted: Jul 26, 2013 7:39 pm
by PYoungbaer
People have speculated about a possible pesticide nexus for White Nose Syndrome since WNS was first observed back in 2007. The US Fish and Wildlife Service funded a three year study, but no evidence has ever been presented that pesticides are a factor in bats getting WNS.

Do pesticides harm bats, as they do other living things? Yes, but so far there is no tie that I'm aware of to WNS. Blog after blog and members of the public ask and wonder and offer opinion, but so far I've seen no studies to support any connection.

The only comparative study I've ever seen of various environmental toxins was done back in 2008, and has occasionally been cited by writers. This analyzed a number of Little Brown bats taken from NY sites and compared them with reference bats from Kentucky, a non-WNS region at that time. Elevated levels were found in both samples, which would imply that environmental exposure was not key to WNS. The study was inconclusive in terms of any cause and effect for WNS, but at least researchers did the study:

In addition, this rather comprehensive analytical piece cites circumstances where pesticides or other environmental toxins can or may cause immunosuppressive reactions, which "might" make a bat more susceptible to infection or other disease, but it is not a scientific study demonstrating cause and effect, rather a discussion of possibilities:

Bottom line: to date I know of no scientific study demonstrating a cause and effect relationship between pesticides and WNS. If anyone has information to the contrary, please point us to it. Thank you.

Re: The Pesticide Matrix

PostPosted: Sep 25, 2015 6:30 am
by peter febb
Cave-dwelling bats in North America are fighting an epic battle against the fungal disease known as white-nose syndrome, and now, they may be facing another foe—chemical contaminants. Scientists analyzed the tissues of several dead and dying bats and detected the presence of multiple chemicals including polybrominated diphenyl ethers (PBDEs), caffeine, ibuprofen, bisphenol-A, and triclosan. The new study was published in the journal Archives of Environmental Contamination and Toxicology on August 6, 2015.