Concentrations of mercury and other trace elements in two offshore skates: sandy ray Leucoraja circularis and shagreen ray L. fullonica
|Author(s)||Nicolaus E. E. Manuel1, Barry Jon1, Bolam Thi P. C.1, Lorance Pascal2, Marandel Florianne2, Phillips Sophy R. Mccully1, Neville Suzanna1, Ellis Jim R.1|
|Affiliation(s)||1 : Cefas, Pakefield Rd, Lowestoft NR33 0HT, Suffolk, England.
2 : IFREMER, Unite Ecol & Modeles Halieut, B-P 21105, F-44311 Nantes 03, France.
|Source||Marine Pollution Bulletin (0025-326X) (Pergamon-elsevier Science Ltd), 2017-10 , Vol. 123 , N. 1-2 , P. 387-394|
|Keyword(s)||Trace metals, Sandy ray, Shagreen ray, Bay of Biscay, Celtic Sea|
Trace metal concentrations in muscle and liver tissues from two offshore species of skate were examined. Concentrations of mercury in muscle of Leucoraja circularis (n = 20; 23–110.5 cm total length, 157–490 m water depth) and L. fullonica (n = 24; 28.5–100 cm total length, 130–426 m water depth) were 0.02–1.8 and 0.04–0.61 mg kg− 1, respectively. Concentrations of both As and Hg increased with total length. Only the largest specimen had a concentration of Hg in muscle > 1.0 mg kg− 1. Data were limited for specimens > 90 cm long, and further studies on contaminants in larger-bodied skates could usefully be undertaken.