Among populations living in close connection with the sea, rivers and lakes for subsistence, diet varies according to local monthly wildlife species availability food preferences. This may lead variations methylmercury (MeHg) exposure over a year, although no biomonitoring studies have documented this issue Circumpolar populations, most exposed international Hg emissions. Our aim was characteri...

Chronic metal toxicity is a concern in the Canadian Arctic because of the findings of high metal levels in wildlife animals and the fact that traditional food constitutes a major component of the diet of indigenous peoples. We examined exposure to trace metals through traditional food resources for Inuit living in the community of Qikiqtarjuaq on Baffin Island in the eastern Arctic. Mercury, ca...

Due to the opening of the Northwest Passage and interest in Arctic resources, naval activities (amongst others) and ocean noise are increasing in northerly beluga waters. Through data acquired in a capturerelease project, this work examines the frequencies and sound levels to which wild belugas are sensitive. A standard audiogram is being determined from the wild samples, noting the variation b...

In many fields, complicated issues can now be solved with the help of Artificial Intelligence (AI) and Machine Learning (ML). One more modern Metaheuristic (MH) algorithms used to tackle numerous in various fields is Beluga Whale Optimization (BWO) method. However, BWO has a lack diversity, which could lead being trapped local optimaand premature convergence. This study presents two stages for ...

in this study the lc50 96h values of water-soluble fractions (wsf) of the caspian sea ? exploited crude oil were determined in beluga, huso huso fingerlings. the fingerlings averaged 2.42 ? 0.11 g in weight were exposed to wsf crude oil at concentrations 24.75, 27, 29.25, 31.5, 33.75, 36, 38.25 ppm. the treatments were performed in three replicates and all changes in the specimens were determin...

Beluga whales ( Delphinapterus leucas ) are social animals that return to the same estuaries each summer season. The Western Hudson Bay belugas in Churchill River estuary appear be attracted boats, resulting whale-watching being a popular tourism activity for area. However, regulators have raised concerns about whether this has negative consequences on beluga population. We hypothesized more vu...