The concentration levels of some potentially toxic trace elements such
as Cd, Cr, and Pb in the muscle
tissue of some shrimp and prawn species from Northeastern Mediterranean Sea, Gulf of Mersin, Turkey were seasonally
determined in this study. The effects of seasons on the potentially toxic trace
elements levels of regional commercially valuable five different shrimp and
prawn species (green tiger
prawn-Penaeus semisulcatus, kuruma
prawn-Marsupenaeus japonicus,
caramote prawn-Melicertus kerathurus,
deepwater pink shrimp-Parapenaeus
longirostris, speckled shrimp-Metapenaeus
monoceros) were determined. 30 individuals of each species were caught by
bottom trawling from the Mediterranean Sea (Gulf of Mersin) in four seasons in 2013. Shrimp and prawn samples were
extracted using digestion method with concentrated nitric acid and per chloric
acid and metal levels were measured using ICP/MS. The differences in Cd, Cr and Pb levels of
muscle tissue in all species were determined as 0.44-1.40 µg/g dw, 1.38-5.80
µg/g dw, and 1.99-13.42 µg/g dw, respectively. The quantitative relationships
generally found in the metal levels of muscle in all the species were: Pb>
Cr> Cd, but the concentration of each potentially toxic heavy metal varied seasonally.
If the data obtained by this study were evaluated with respect to the data in
U.S. Food and Drug Administration (2013), it would be obviously seen that all
the shrimp and prawn species living in Gulf of Mersin were not contaminated
with Cd and Cr but contaminated with Pb. However, if it is analyzed in
accordance with European Commission (2011) and Turkish Food Codex (2011), all
species except winter and spring samples of Parapenaeus
longirostris are contaminated with Cd and Pb.
Subjects | Hydrobiology |
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Journal Section | Articles |
Authors | |
Publication Date | April 1, 2016 |
Published in Issue | Year 2016 Volume: 2 Issue: 2 |