Oxidative stress biomarkers in Eurasian eagle owls (Bubo bubo) in three different scenarios of heavy metal exposure

Application of biomarkers in Epaulet grouper (Epinephelus stoliczkae) to assess chromium pollution in the Chabahar Bay and Gulf of Oman

“…Despite the difficulties in comparison, due to limited information of this area, the chromium levels in sediments are similar to previously reported concentrations (de Mora et al, 2004;Hamzeh et al, 2013). Similar dates were previously reported by other authors of different areas for other heavy metals (Yilmaz, 2003;Dutton and Fisher, 2011;Gammons et al, 2006;Vasanthi et al, 2013;Monroy et al, 2014;Espin et al, 2014;Sfakianakis et al, 2015).…”

Elevated mercury levels in a wintering population of common eiders ( Somateria mollissima ) in the northeastern United States

“…A recent study in Spain examined the effect that low concentrations of Hg and other heavy metals had on the antioxidant system in Eurasian eagle owls (Bubo bubo). They found that blood Hg concentrations as low as 3 lg/dl increased lipid peroxidation by 102% (Espín et al, 2014). While eider blood Hg values from all capture locations in this paper fall below the reported LOAEL for loons, several individuals at the Plum Island Sound, MA capture site are well above known LOAELs for swallows, wrens, and eagle owls.…”

Tracking pan-continental trends in environmental contamination using sentinel raptors—what types of samples should we use?

“…Despite this, correlations between blood and internal tissue concentrations have been found for some compounds (García-Fernández et al 1995 , 1996 , 1997 ; Henriksen et al 1998 ; Eagles-Smith et al 2008 ) but such relationships can be disrupted by remobilization of contaminants from fat or other depots during egg laying, moult, starvation and migration (Henny and Meeker 1981 ; Henriksen et al 1996 ; Evers et al 2005 ) and by variation in either exposure pattern or intrinsic factors such as age, size, and body condition (García-Fernández et al 1995 , 1997 ). Blood can also be analysed for effects biomarkers such as haematological parameters (including measurement of clotting performance), oxidative stress, plasma biochemistry, enzymatic activities, and gene expression (Nyholm 1998 ; Martínez-López et al 2004 ; Fisher 2009 ; Cesh et al 2010 ; Martinez-Haro et al 2011a ; Rattner et al 2011 , 2014b , 2015 ; Espín et al 2014b , d ; Maceda-Veiga et al 2015 ).…”