Organohalogen contaminants and trace metals in North-East Atlantic porbeagle shark (Lamna nasus) |
| |
Authors: | Victoria A. Bendall Jonathan L. BarberAlexandra Papachlimitzou Thi BolamLee Warford Stuart J. HetheringtonJoana F. Silva Sophy R. McCullySara Losada Thomas MaesJim R. Ellis Robin J. Law |
| |
Affiliation: | Centre for Environment, Fisheries and Aquaculture Science (Cefas), Lowestoft Laboratory, Pakefield Road, Lowestoft NR33 0HT, UK |
| |
Abstract: | The North-East Atlantic porbeagle (Lamna nasus) population has declined dramatically over the last few decades and is currently classified as ‘Critically Endangered’. As long-lived, apex predators, they may be vulnerable to bioaccumulation of contaminants. In this study organohalogen compounds and trace elements were analysed in 12 specimens caught as incidental bycatch in commercial gillnet fisheries in the Celtic Sea in 2011. Levels of organohalogen contaminants were low or undetectable (summed CB and BDE concentrations 0.04–0.85 mg kg−1 wet weight). A notably high Cd concentration (7.2 mg kg−1 wet weight) was observed in one mature male, whereas the range observed in the other samples was much lower (0.04–0.26 mg kg−1 wet weight). Hg and Pb concentrations were detected only in single animals, at 0.34 and 0.08 mg kg−1 wet weight, respectively. These contaminant levels were low in comparison to other published studies for shark species. |
| |
Keywords: | Pelagic shark Lamnidae Celtic Sea Metals PCBs Flame retardants |
本文献已被 ScienceDirect 等数据库收录! |
|