Publications by authors named "R N Michaud"
The endangered beluga whale (Delphinapterus leucas) of the St. Lawrence Estuary (SLEB) faces threats from a variety of anthropogenic factors. Since belugas are a highly social and vocal species, passive acoustic monitoring has the potential to deliver, in a non-invasive and continuous way, real-time information on SLEB spatiotemporal habitat use, which is crucial for their monitoring and conservation.
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- The study analyzes beluga whale carcasses from the St. Lawrence Estuary, Canada, since 1983 to understand the nutritional condition related to various causes of death.
- By refining death categories and using Bayesian linear models, researchers identified distinct nutritional conditions linked to specific causes, such as lower conditions for those that died from neonatal mortality and primary starvation.
- The findings suggest a connection between chronic health issues and poorer nutritional conditions in belugas, while surprising results show that whales dying from trauma did not necessarily exhibit the highest nutritional health.
We describe an unusual mortality event caused by a highly pathogenic avian influenza (HPAI) A(H5N1) virus clade 2.3.4.
View Article and Find Full Text PDFThe St. Lawrence Estuary (SLE) beluga (Delphinapterus leucas) population is highly exposed to an array of contaminants that were identified as one of the causes to the non-recovery of this endangered and declining population. In the last decade, an increasing number of parturition-associated complications and calf mortality has been reported in this population.
View Article and Find Full Text PDFBackground: This study was performed to assess the impact of preaspiration antibiotics on synovial fluid analysis and timing of operative treatment in native-joint septic arthritis.
Methods: We performed a retrospective record review of adult patients from an urban level 1 trauma center with native joint septic arthritis in 2015-2019, identified by means of codes from the ( and ). Univariate and multivariate analyses were performed to determine whether antibiotics were associated with lower synovial fluid white blood cell counts (WBCs), the percentage of polymorphonuclear neutrophil (PMNs), and rate of culture positivity.