This excel workbook contains data from a study of trophic transfer of radiolabeled (C-14) permethrin from pyrethroid-resistant Hyalella azteca to a known predator, the Inland silverside Menidia beryllina. Fish were fed 15 dosed (~ 1 ng/animal) or control H. azteca for 14 days at three temperatures, 18, 23 and 28°C, and three salinities (6, 13 and 20 PSU) to simulate changes anticipated under global climate change (GCC). Following feeding, fish were analyzed for total permethrin concentrations, as well as percent parent compound as a a measure of biotransformation, were measured in both H. azteca and M. beryllina.

Date created


File format

Excel (xlsx)

File size

45 kB

Geographic coverage

not applicable (lab study)

Scientific names

Hyalella azteca, Menidia beryllina


Bioaccumulation, Menidia beryllina, Permethrin, Global climate change, Hyalella azteca