Laurentian SETAC

@laurentiansetac.ca

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Laurentian chapter of the Society of Environmental Toxicology and Chemistry Advocate for Equity, Diversity and Inclusion

Headshot of a woman with brown hair, glasses, and a blue shirt standing in front of a tree.
Laurentian SETAC pub night: Following the flow – How chasing chemicals led me around the world. Dr. Sarah Crawford, Syngenta Canada. Event date: Tuesday September 16, beginning at 7:00pm. Event location: Royal City Brewing Co. Guelph, Ontario. Royalcitybrew.ca Headshot of blonde woman wearing a hat that says ‘Syngenta’, in front of a lake.
Syngenta logo (blue text on white background with leaf icon)
Ecometrix
Wellington Laboratories - High Quality Reference Standards | Exceptional Customer Service well-labs.com Images of polar bears in a snowy forest
Laurentian SETAC Conference and AGM - Western University, London, ON - June 12-13, 2025. Early registration and abstract submission closes May 2 (abstract registration now extended until May 9). Avian Research Facility Tour on June 12 - limited spots! Pub night on June 12 - Dr. Yolanda Herdburg will discuss “A jungle of chemicals around us -for better or worse”. Two short courses are available on June 12, 2025: 1) “Digital resources and GenAI uses” with Dr. Christine Bell – 9:00 to 11:30; 2) “Human Health & Ecological Risk Assessment” with Dr. Lara Alves Beese & Andrea Amendola – 12:30 to 15:00. Decorative images include a photo of the Western University campus; the L-SETAC AGM logo, with a trillium flower illustrated on a green background, encircled by DNA strands; and headshots of the pub night and plenary speakers.
Dillon Consulting
SLR
NAUTILUS ENVIRONMENTAL - logo is a green nautilus shell
Laurentian SETAC Ottawa Pub Night - April 23, 2025 from 5 to 7 pm. Title: Out of the non-stick pan, into our waters: Maternal transfer of perfluoroctane sulfonate (PFOS) in the Great Lakes' salmonid species and effects on oxidative stress levels throughout embryo development Speaker: Geneviève Haché, Carleton University Where: Mike's Place Pub, Ottawa, Ontario https://gsacarleton.ca/mikes-place/ Accessibility: https://carleton.ca/campus/buildings/nideyinan/ Abstract: Extensive industrial and commercial use of per- and polyfluoroalkyl substances (PFAS) has led to their widespread contamination of the Great Lakes. Previous studies suggest maternal offloading of PFOS in wild-caught Lake Michigan salmonid species. This project evaluates PFOS exposure effects throughout the development of rainbow trout eggs: a salmonid species important to the Great Lakes. We exposed rainbow trout eggs at varying concentrations of PFOS (0, 0.03, 0.3, 3,0 & 30 µg/ml in Cortland’s solution). We assessed the following markers of oxidative stress at various timepoints: lipid peroxidation levels, superoxide dismutase (SOD) activity and relative glutathione (GSH) abundance. Preliminary results show a general decrease in lipid peroxidation levels, varying SOD activity that lowers significantly in the 0.3 ppm treatment group at week 4 (76% lower than control) and an increase in GSH levels across treatments at week 4 increase (up to 11% above control). PFOS compartmentalization will be tracked through LC-MS/MS analysis of embryo content. The resulting data will provide key insight into the toxic effects of PFOS on salmonid embryo development and its mechanism of accumulation, as well as its broader environmental and ecological impact.
Laurentian SETAC Conference and AGM - Western University, London, ON - June 12-13, 2025. Early registration and abstract submission closes May 2. Avian Research Facility Tour on June 12 - limited spots! Pub night on June 12 - Dr. Yolanda Herdburg will discuss “A jungle of chemicals around us -for better or worse”. Two short courses are available on June 12, 2025: 1) “Digital resources and GenAI uses” with Dr. Christine Bell – 9:00 to 11:30; 2) “Human Health & Ecological Risk Assessment” with Dr. Lara Alves Beese & Andrea Amendola – 12:30 to 15:00. Decorative images include a photo of the Western University campus; the L-SETAC AGM logo, with a trillium flower illustrated on a green background, encircled by DNA strands; and headshots of the pub night and plenary speakers.
Drawing of a women in a lab coat working with test tubes and Erlenmeyer flasks. Text above on a blue background says, "LSETAC celebrates Women's History Month - Let's learn about 3 trailblazing women in toxicology!"
Laurentian SETAC pub night: A closer look at undergraduate research - highlighting projects from across the province. Featuring multiple presenters from Wilfrid Laurier University, University of Guelph, McMaster University, and University of Toronto. Event details: Monday April 7 at 7pm, at Royal City Brewing Co., Guelph Ontario. royalcitybrew.ca Poster features university logos and Laurentian SETAC 30th anniversary logo, with a trillium.
Laurentian SETAC event, "Where Are We Now: Women in Science Brunch and Panel Discussion". Join us for brunch, networking, and a panel discussion on the progress made and barriers faced by women in science today. Tickets are on sale until Friday February 21st. Panelists: Oana Birceanu (Assistant Professor, Western University), Amila De Silva (Research Scientist, Environment and Climate Change Canada), Yamini Gopalapillai (Senior Manager, Science and Regulatory Affairs, International Copper Association), and Allison McDonald (Professor, Wilfrid Laurier University). Moderated by Ève Gilroy (Environment and Climate Change Canada). Everyone is welcome to join! Students $20, non-students $35
Laurentian SETAC event, "Where Are We Now: Women in Science Brunch and Panel Discussion". Join us for brunch, networking, and a panel discussion on the progress made and barriers faced by women in science today. Tickets are on sale until Friday February 21st. Panelists: Oana Birceanu (Assistant Professor, Western University), Amila De Silva (Research Scientist, Environment and Climate Change Canada), Yamini Gopalapillai (Senior Manager, Science and Regulatory Affairs, International Copper Association), and Allison McDonald (Professor, Wilfrid Laurier University). Moderated by Ève Gilroy (Environment and Climate Change Canada). Everyone is welcome to join! Students $20, non-students $35
Laurentian SETAC event, "Where Are We Now: Women in Science Brunch and Panel Discussion". Join us for brunch, networking, and a panel discussion on the progress and barriers that women in science face today. Tickets are on sale until Friday February 21st. Everyone is welcome to join! Students $20, non-students $35. Saturday March 1st, 10:30am to 1:30pm. Roseland Park County Club, 3079 Princess Blvd, Burlington. https://roselandclub.com/
Yasmeen Hichri
Laiba Jamshed
L-SETAC lunch & learn: Incorporating climate change adaptations into the remedial action plan at BAF-3 long range radar, Brevoort Island, Nunavut. 12-1 PM, Thursday, January 23
Laurentian SETAC pub night 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 to 7:00 pm – talk begins at 6:00 pm Where: Mike’s Place Pub, 209 Nideyinàn (Formerly UC) at Carleton University – 1125 Colonel By Drive, Ottawa 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.
Save the Date poster for Laurentian SETAC's 29th Conference & AGM: Science in an evolving world, hosted at Western University from Thursday, June 12th to Friday, June 13th, 2025.