A multispecies-monitoring study about bioaccumulation of mercury in Iranian birds (Khuzestan to Persian Gulf): Effect of taxonomic affiliation and trophic level

Influence of taxa, trophic level, and location on bioaccumulation of toxic metals in bird’s feathers: A preliminary biomonitoring study using multiple bird species from Pakistan

“…Our results depicted a direct relation between the diet of individuals and metal concentrations in their tissues. Our findings also corresponded with the conclusions drawn by Burger and Gochfeld (2000) and Zolfaghari et al (2009) which pointed out that species with higher trophic level accumulated higher concentrations of metals/Hg than those which were lower on the food chain. However it is not true for all the metals and/or species.…”

“…Although significant differences for Hg accumulation among various taxa have been reported (Ochoa-acuna et al, 2002;Zolfaghari et al, 2009), concentrations of heavy metals among different taxa have rarely been compared. We recorded profound differences of metals among various taxa which could be best explained through variety of inter-specific and intra-specific factors (Monteiro and Furness, 2001).…”

“…Van Straalen and Ernst (1991) also suggest that levels of metal accumulation in indicator species might increase with the age of the organism and its trophic position. Effects of taxonomic affiliations of birds species on metals have been reported in a limited number of studies (Ochoa-acuna et al, 2002;Zolfaghari et al, 2009). To the best of our knowledge no comprehensive study has investigated the combined effects of trophic level, taxonomic affiliation, and geographic location on metal accumulation in birds.…”

“…Moreover, in literature it is presumed and somehow proven that accumulation of metals in birds is influenced by a variety of parameters such as trophic position, taxonomic group, genetic variability, age, gender, size of bird and feathers types etc. (Burger and Gochfeld, 2000;Dauwe et al, 2002;Burger et al, 2008;Burger and Gochfeld, 2009;Zolfaghari et al, 2009;Lucia et al, 2010;Castro et al, 2011). Many studies revealed that metal accumulation differs in birds with different feeding habits, feeding strategies and trophic levels on the food chain.…”

Contaminations of Metal in Tissues of Siberian Gull Larus heuglini: Gender, Age, and Tissue Differences

“…Yet, some highly migratory species, such as seabirds, have been largely ignored. In the other hands, there are only a few reports that document metal contamination in southern Iran seabirds (Zolfaghari et al 2009;Mansouri et al 2011bMansouri et al , 2012. Hence, our study aimed to further investigate the concentrations of cadmium, lead, and zinc in Siberian gull (Larus heuglini) from southern Iran, in order to: (1) examine the sex and gender related variation in trace metal accumulation, and (2) to determine the significant between metal concentrations in the kidney, liver, and pectoral muscle.…”