We are hosting our first Pub Night of the year in Ottawa on Wednesday January 29! Join us for an engaging talk, pub food and drinks on Carleton University campus.
Title: Effects of short-chain per-and polyfluoroalkyl substances (PFAS) on northern leopard frog (Rana pipiens) developmental, physiological, and immunological responses
Speaker: Dr. Jillian Rohonczy, Carleton University
When: Wednesday, January 29, 2025 | 5:00 pm doors; 6:00 pm talk
Where: Mike’s Place Pub, 209 Nideyinàn (Formerly UC) at Carleton University – 1125 Colonel By Drive, Ottawa
Cost: Pay what you can – help support our AGM student awards!
Make a donation here: https://www.laurentiansetac.ca/support-pubnights
Abstract: The chronic toxicity of short-chain (≤ 7 perfluorinated carbons) per- and polyfluoroalkyl substances (PFAS) is relatively understudied despite their prevalence and persistence in the environment. We conducted two exposure studies to examine the chronic toxicity and bioconcentration of short-chain PFAS using northern leopard frog (Rana pipiens) tadpoles. The first exposure study examined the effects of two short-chain perfluoroalkyl carboxylic acids (PFCAs), perfluorobutanoic acid (PFBA) and perfluorohexanoic acid (PFHxA), on northern leopard frog tadpole growth and development endpoints. The second study investigated the effects of two short-chain perfluoroalkyl sulfonic acids (PFSAs), perfluorobutanesulfonic acid (PFBS) and perfluorohexanesulfonic acid (PFHxS), on northern leopard frog tadpole growth, development, stress, and immune metrics. We found that that some short-chain PFAS influence tadpole growth, hepatic health, and lipid metabolism, and can exert endocrine-disrupting effects on tadpoles during early development. These studies furthered our understanding of the effects of short-chain PFAS exposure on aquatic organisms and provided essential information for ecological risk assessments of these compounds.
Biography: Jillian completed her PhD at Carleton University and is currently a postdoctoral fellow in the Rand and Environmental Biogeochemistry and Biotechnology Labs at Carleton University. Her research focuses on microbial transformation of PFAS.
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