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Daily News Blog

Archive for the 'hexazinone' Category


04
Jan

“Silence of the Clams”—Study Highlights the Threat of Multiple Pesticide Stressors to Bivalves

(Beyond Pesticides, January 4, 2021) Chronic exposure to pesticides used in conventional forestry operations runoff and harm soft shell clams, according to a recent study published in Science of the Total Environment, entitled “The silence of the clams: Forestry registered pesticides as multiple stressors on soft-shell clams.” Rather than focusing on the impact of a single chemical, researchers analyzed the combined effects of several pesticides. “This is an important data gap to fill as research on these compounds’ toxicity typically focuses on individual compound effects at high concentrations to determine lethality, which while necessary for understanding compound toxicity, can miss sublethal effects that can have long term impacts on these systems,” said lead author Allie Tissot of Portland State University. The soft shell clam, Mya arenaria, is found to be widespread in coastal areas in both the western and eastern U.S., and is often eaten in stews or chowders. A recent study found a range of chemical contaminants detected in Oregon populations of these species, prompting researchers to further investigate the impact of these exposures. An experiment was set up with tanks to mimic a seabed, and eight different groups of 11 clams were established and treated with various amount […]

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