Body mass, mercury exposure, biochemistry and untargeted metabolomics of incubating common eiders (Somateria mollissima) in three Baltic colonies

Environmental and life-history factors influence inter-colony multidimensional niche metrics of a breeding Arctic marine bird

“…This is especially a potential population stability concern for harvested species, such as common eider, which are an important, harvested species for many Indigenous communities in the North (Nakashima and Murray 1988;Priest and Usher 2004). Concentrations of THg for the eider colonies in this study are comparable to those observed in previous eider research (Provencher et al 2016;Albert et al 2019;Ma et al 2020;Dietz et al 2021). The mean concentrations of THg in the Alaska, Christiansø and East Bay colonies were above 0.95 µg/g dw, suggesting that three of the 10 colonies studied are therefore considered to be above general environmental background concentrations (Eagles- Smith et al 2008;Ackerman et al 2016).…”

Iodine Bioavailability and Accumulation of Arsenic and Cadmium in Rats Fed Sugar Kelp (Saccharina latissima)

“…Samples were eluted with 150 µL methanol and reconstituted in 100 μL of 5% methanol containing an instrument control standard (crT3). Five microliter of the sample extracts were injected on a nanoflow ultra-high performance liquid chromatography system (ThermoFisher Scientific) with a preconcentration trap-column setup described elsewhere [ 22 , 23 ]. Trapped thyroid hormones were eluted to the analytical column (PepMap RSLC, C18, 2 µm, 100 Å, 75 µm × 250 mm, ThermoFisher Scientific) at 300 nL/minute with mobile phases comprising water, acetonitrile, and 0.1% formic acid.…”

Muscle growth affects the metabolome of the pectoralis major muscle in red-winged tinamou (Rhynchotus rufescens)

“…Although animal selection promotes significant improvements in growth rates and meat production, a detailed understanding of muscle development is necessary in order to prevent physiological disorders, changes in composition of the muscle fiber type, and metabolic alterations that could influence meat quality ( Deeb and Lamont, 2002 ; Ruusunen and Puolanne, 2004 ; Aliabad et al, 2011 ; Tang et al, 2021 ). Within this context, metabolomics has been used to elucidate the biological mechanisms underlying muscle development related to the production of different bird species ( Wang et al, 2017 ; Ceribeli et al, 2018 ; Cônsolo et al, 2020 ; Ma et al, 2020 ; Basile et al, 2021 ), since metabolites are the intermediate products or end-products of complex cellular reactions and are sensitive markers of physiological activity ( Fontanesi, 2016 ; Zhang et al, 2022 ). The present study reports for the first time the metabolomic profile of the pectoralis major muscle of 2 groups of male red-winged tinamou ( Rhynchotus rufescens ) bred in captivity and selected for growth using proton nuclear magnetic resonance ( 1 H NMR ) spectroscopy.…”