(Beyond Pesticides, October 7, 2011) Commercial lobster fishers operating in Long Island Sound off the coast of Connecticut have begun to suspect that the mosquito killing chemical methoprene, sprayed by neighboring New York State as part of its West Nile virus (WNv) control program, is contributing to widespread deaths of lobsters in the sound. Believing that a large amount of the chemical flowed into the sound in late summer due to heavy rains from Hurricane Irene, the lobster fishers are asking New York to follow Connecticut’s example and switch its WNv control method to the less toxic bacillus thuringiensis. Late summer declines in the sound’s lobster population have been alarmingly common throughout much of the last decade, devastating fishers and the local economy that depends on them. A number of factors have been blamed, but the lobstering community has increasingly been pointing to mosquito pesticides for several reasons. Methoprene has a tendency to sink to the bottom of the ocean water, where lobsters live and feed. Additionally, lobsters are a distant cousin of mosquitoes, and the methoprene acts on them in much the same way that it does the insects. Finally, the western part of the sound was the hardest … Continue reading Mosquito Pesticide Suspected in Lobster Deaths