Beluga whales (Delphinapterus leucas) are an integral part of many Arctic Indigenous cultures and contribute to food security for communities from Greenland, across northern Canada Alaska Chukotka, Russia. Although the harvesting stewardship practices peoples vary among regions have shifted adapted over time, central principles respect beluga sharing harvest remained steadfast. In addition intr...

Appropriate marine–terrestrial reservoir offset (ΔR) values are essential for accurate calibration of marine radiocarbon dates. However, ΔR only valid the specific curve that their calculation is based on. Here, we present revised Marine20 from Arctic North America, on previously published 14C dates pre-bomb live-collected molluscs (n = 124) and cetaceans (beluga whales; tooth dentine; n 12), b...

High-resolution time-frequency (TF) images of multicomponent signals are of great interest for visualization, feature extraction and estimation. The matched Gaussian multitaper spectrogram has been proposed to optimally resolve multicomponent transient functions of Gaussian shape. Hermite functions are used as multitapers and the weights of the different spectrogram functions are optimized. For...

background: faba bean (vicia faba) is a rich source of protein and carbohydrates that is used as a vegetable ingredient in diet of livestock, poultry and fish, in many countries. objectives: this study was conducted to assess the effects of different levels of faba bean on the serum lipid levels and liver function of farmed beluga sturgeon (huso huso). methods: 144 juvenile beluga (82.38 ± 0.83...

effect of dietary free l-lysine on growth, food intake, and muscle composition of beluga juveniles were investigated over 6 weeks. control diet lysine content was 2.1% of dry matter (4.4% of dietary protein). three experimental diets were prepared by adding lysine (0.5, 1 and 1.5%) to control diet to obtain diets containing 2.6, 3.1 and 3.6% of dry matter lysine (corresponding to 5.5, 6.6 and 7...

the late sexual maturity in sturgeon and the absence of morphological differences between males and females makes sex discrimination difficult. identification of sex at an early life stage is of high interest in caviar production because it allows efficient selection of females. in this study, the genome of 10 mature male and 10 mature female specimens of persian sturgeon (acipenser persicus...