My colleague, Dr Matt Landos, shared this with me:
“Interesting piece of work from US, looking at distribution of pyrethroids in urban creek sediments. Origin is presumably household use. Household uses in Australia are climbing with do-it-yourself spider control, lawn ant control, etc…
The paper shows movement off the application site, into waterways, at levels capable of causing toxicity to sensitive invertebrates. Notably the registration of these product did not predict this would happen, or that once bound to sediment they could remain bioavailable and toxic.
The same impacted invertebrates are the essential food resource for fish larvae amongst other critters. Reduction of density will impact recruitment of wild fishes.”
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