Transport of mercury through a laboratory two-level marine food chain

Trophic Transfer and Biomagnification Potential of Contaminants in Aquatic Ecosystems

“…Uptake in both water and food was considerable, although rapid depuration of inorganic mercury reduced apparent trophic transfer, and thus no biomagnification was observed. Parrish and Carr (1976) fed mercury-contaminated algae (Croomonas salina) to the copepod Acartia tonsa for 5 d. The copepods retained < 0.1 % from the contaminated algae, such that there was little accumulation and no biotransformation to methyl mercury in this food chain. In a freshwater laboratory study, Hamdy and Prabhu (1979) followed mercury in a food chain including bacteria (Bacillus licheniformis), mosquito larvae (Aedes aegypti), guppy (Poecilia reticulata), and the chanchito cichlid (Cichlasoma facetum).…”

Lead, mercury, and certain nutrient elements in ulva lactuca (linnaeus) from Ras Beirut, Lebanon

“…In the gametophytes and developing sporophytes of the brown alga Laminaria hyperborea, mer-1 8 7 cury, copper, and zinc were found to be most toxic (Kain & Hopkins, 1971) . Planktonic copepods feeding on algae which had been exposed to and had absorbed high concentrations of mercuric chloride, exhibited no trace of the metal either in their feces or eggs, indicating that the mercury had not been passed to the next trophic level (Parrish & Carr, 1976) . Planktonic copepods feeding on algae which had been exposed to and had absorbed high concentrations of mercuric chloride, exhibited no trace of the metal either in their feces or eggs, indicating that the mercury had not been passed to the next trophic level (Parrish & Carr, 1976) .…”