50th webinar of the Hebd'Eau series entitled "Profiling mammals, birds and fish in surface waters: Application to trace the source of fecal contamination".
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Speaker: Prof. Richard Villemur, INRS-Centre Armand-Frappier Santé Biotechnologie
Language : French, with an English slideshow
View the PPT presentation here »
Summary: Knowing the composition of animals present in aquatic ecosystems can provide information on anthropogenic pressures on these environments. One of these pressures is the occurrence of fecal contamination. However, this contamination can come from more than one animal species in areas where urban and agricultural activities overlap. In our study, we developed a metagenomic approach to profile mammals and birds, the most likely sources of fecal contamination, but also fish in four rivers, two of which were subject to fecal contamination. We detected the high presence of human and bovine sequences in one of the rivers, suggesting contamination by these two animals. This approach could be a valuable tool to simultaneously identify the potential contribution of various animals as sources of fecal contamination in surface waters. Also, our approach has the potential to rapidly and repeatedly study the composition of fish in rivers or lakes, and to study the terrestrial animals surrounding these waters. This information may be valuable in managing lakes and rivers for invasive species evolution, or for recreational purposes (e.g. fishing activities).
New series of weekly CentrEau webinars "all about water management". These short 20-minute presentations will be offered live every Thursday at 1 p.m. followed by a short discussion period. CentrEau professors and researchers, as well as guest speakers, will present their research work and its importance in a semi-popularized manner. Watch the previous webinars on our YouTube Channel.
| March 31, 2022 | All models are wrong, but how do we know if they are useful? [in English] | Dr Martijn Kuller, Eawag / Université Laval | |
| April 14, 2022 | Realities, challenges and issues of water management in First Nations communities in Quebec [in French] | Eric Sioui, Programme de formation itinérante de Services aux Autochtones du Canada (SAC) | |
| April 28, 2022 | Determining high water marks in presence of ice on the Chaudière river [in French] | Jean-Robert Ladouceur, Université Laval | |
| May 12, 2022 | to be confirmed |
