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Infectious agent release and Pacific salmon exposure at Atlantic salmon farms revealed by environmental DNA.
Sci Rep
December 2024
Fisheries and Oceans Canada, Pacific Biological Station, Nanaimo, V9T 6N7, Canada.
The potential risk posed by infectious agents (IAs) associated with netpen aquaculture to wild fishes is determined based on the "release" of IAs from netpens into the environment, the "exposure" of the wild fish to those released agents, and the "consequence" for wild fish experiencing infection by those agents. Information available to characterize these three factors is often lacking, and the occurrence of transmission from aquaculture to wild fish as well as potential consequences of such transmission are difficult to observe. In this study, we utilized environmental DNA (eDNA) to characterize the release of dozens of IAs from, and exposure of Pacific salmon to, Atlantic salmon aquaculture.
View Article and Find Full Text PDFFeasibility and Time Analysis of Three-Dimensional and Myocardial Deformation versus Conventional Two-Dimensional Echocardiography to Assess Cardiac Chambers.
J Am Soc Echocardiogr
October 2022
University of Chicago Medicine, Chicago, Illinois.
Salmon lice in the Pacific Ocean show evidence of evolved resistance to parasiticide treatment.
Sci Rep
March 2022
Department of Biology, Dalhousie University, Halifax, NS, Canada.
Parasitic salmon lice (Lepeophtheirus salmonis) threaten the economic and ecological sustainability of salmon farming, and their evolved resistance to treatment with emamectin benzoate (EMB) has been a major problem for salmon farming in the Atlantic Ocean. In contrast, the Pacific Ocean, where wild salmon are far more abundant, has not seen widespread evolution of EMB-resistant lice. Here, we use EMB bioassays and counts of lice on farms from the Broughton Archipelago, Canada-a core region of salmon farming in the Pacific-to show that EMB sensitivity has dramatically decreased since 2010, concurrent with marked decrease in the field efficacy of EMB treatments.
View Article and Find Full Text PDFRationale and population-based prospective cohort protocol for the disadvantaged populations at risk of decline in eGFR (CO-DEGREE).
BMJ Open
September 2019
Deparment of Medical Statistics and Non-Communicable Disease Epidemiology, London School of Hygiene and Tropical Medicine, London, UK.
Introduction: A recently recognised form of chronic kidney disease (CKD) of unknown origin (CKDu) is afflicting communities, mostly in rural areas in several regions of the world. Prevalence studies are being conducted in a number of countries, using a standardised protocol, to estimate the distribution of estimated glomerular filtration rate (eGFR), and thus identify communities with a high prevalence of reduced glomerular filtration rate (GFR). In this paper, we propose a standardised minimum protocol for cohort studies in high-risk communities aimed at investigating the incidence of, and risk factors for, early kidney dysfunction.
View Article and Find Full Text PDFThe Pediatric Hospital Medicine Core Competencies Supplement: a Framework for Curriculum Development by the Society of Hospital Medicine with acknowledgement to pediatric hospitalists from the American Academy of Pediatrics and the Academic Pediatric Association.
J Hosp Med
April 2010
University of California San Diego School of Medicine, Department of Pediatrics, USA.
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