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Cadmium concentration in liver and muscle of silky shark (Carcharhinus falciformis) in the tip of Baja California south, México

Terrazas-López, Rafael, Arreola-Mendoza, Laura, Galván-Magaña, Felipe, Anguiano-Zamora, Marlene, Sujitha, S.B., Jonathan, M.P.
Marine pollution bulletin 2016 v.107 no.1 pp. 389-392
Carcharhinus, adults, body length, cadmium, environmental factors, environmental impact, females, food webs, health hazards, humans, liver, males, marine environment, metabolism, muscle tissues, muscles, risk, seafoods, sharks, water pollution, Mexico
Cadmium concentrations were determined in the tissues of muscle and liver of Carcharhinus falciformis (silky shark) sampled in Todos Santos, Baja California South, Mexico. This is one of the main shark species for human consumption in Mexico. Results indicate that accumulation of Cd varied in both sexes, based on its metabolism, sex, maturity and other biological characteristics. High Cd values were observed in the liver of adults of male (529.61μgg−1) and female (457.43μgg−1), whereas, in muscular tissues it was low (0.37μgg−1) than the prescribed permissible limits for seafood (0.5μgg−1). Substantial correlations were observed between body length and Cd values in adults except young male due to faster growth rate and its metabolism. The study indicated the impact of environmental conditions in the accumulation of Cd and its risk to the food web structure in the marine environment and health hazard for humans.