Bioaccumulation and Biomagnification of Total Mercury in Four Exploited Shark Species in the Baja California Peninsula, Mexico

• Published in: Bulletin of environmental contamination and toxicology 2012-02, Vol.88 (2), p.129-134
• Main Authors: Maz-Courrau, A., López-Vera, C., Galván-Magaña, F., Escobar-Sánchez, O., Rosíles-Martínez, R., Sanjuán-Muñoz, A.
• Format: Article
• Language: English
• Subjects: Animal populations; Animals; Aquatic Pollution; Bioaccumulation; Biological magnification; Chemical contaminants; Consumption; Earth and Environmental Science; Ecotoxicology; Environment; Environmental Chemistry; Environmental Health; Environmental Monitoring; Female; Governments; Human; Humans; Male; Marine; Mercury; Mercury - metabolism; Mexico; Muscles; Peninsulas; Pollution; Prey; Sharks; Sharks - metabolism; Soil Science & Conservation; Toxicity; Waste Water Technology; Water Management; Water Pollutants, Chemical - metabolism; Water Pollution Control
• ISSN: 0007-4861; 1432-0800
• DOI: 10.1007/s00128-011-0499-1

The present study determined the average mercury bioaccumulation in the muscle tissue of four shark species ( Carcharhinus falciformis , Prionace glauca , Sphyrna zygaena and Isurus oxyrinchus ) captured in the Baja California Peninsula. We also evaluated biomagnification of some prey consumed by sharks. All sharks’ species had mercury levels over the limit specified by the Mexican government for human consumption. Blue shark ( P. glauca ) presented highest mercury values (1.96 ± 1.48 μg/g Hg d.w.) and it was the unique specie that showed a negative correlation with mercury content (Rs = −0.035, p  = 0.91). Scomber japonicus was the prey with high content of mercury (0.57 ± 0.02 μg/g).