CORRELATION PROFILES OF THE ACCUMULATED METALS IN SEAWATER, SEDIMENT AND Pachygrapsus marmoratus (Fabricius) TISSUES IN BLACK SEA (ORDU, TURKEY)
Abstract
This study was performed in
order to investigate the interactions of accumulation patterns of some metals
(Al, As, Cd, Cr, Cu, Fe, Mn, Ni, Pb and Zn) in exoskeleton, gill, hepatopancreas
and muscle tissues of the marbled crab Pachygrapsus
marmoratus (Fabricius) sampled from near streams and domestic discharge
points along the coastal region of Black Sea along Ordu in Turkey as well as patterns in sediment and seawater samples of the crab
sampling sites. The study area covering a coastal stretch of 28
km along Black Sea lies between the latitudes
41°03'46.42"-41°07'42.35"N and longitudes
37°28'45.63"-37°41'15.29"E. The metal contents of
the samples were analysed by the inductively coupled plasma - optical emission
spectrometry (ICP-OES) technique. The results showed that the accumulation
orders of the metals, in a descending order, were
Fe>Al>Mn>Zn>Cr>Pb>Cu>As>Ni>Cd in the sediment, Fe>Mn>Cr>As>Cd in the water,
and Al>Fe>Cu>Mn>Zn in crab tissues when evaluated together. In the crab samples, the amount of
the accumulation of all metals was ordered as
gills>exoskeleton>hepatopancreas>muscle. Al and Fe were the
predominant metals in the sediment and crab tissues but Al was not detected in
the seawater samples. A correlation test was performed to reveal the
interaction of accumulation in the sediment, water and crab tissues. Metal-metal interactions and their co-accumulation was detected by
correlation test. These interactions which exist in the crab tissues but not in
the seawater and sediment were the main point of this study. Gills and
exoskeleton displayed the greatest number of significant correlations between
metal–metal interactions. Also, metal concentrations were found to be higher in
the gills and exoskeleton. Strong correlations between Mn-Al (r=0.954,
correlation p<0.001), in the exoskeleton, Al-Fe (r=0.849, correlation
p<0.001), Mn-Zn (r=0.854, correlation p<0.001) in the gills, Al-Zn
(r=0.882 correlation p<0.001) in the hepatopancreas were determined.
Moderate correlations between Zn-Cu were found in the hepatopancreas. These
metal-metal interactions may have been a result of metallothionein activity. No
significant relations were found between metal levels in sediment samples and
crap tissues (p>0.05). The results also showed that metals present in the
seawater and sediment did not directly transform to tissue accumulation. This
result showed that metal amounts in the tissues of the P. marmoratus did not reflect environmental contaminations and that
sediment accumulated higher amounts of metals than seawater and tissues.
Keywords
References
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Details
Primary Language
English
Subjects
Structural Biology
Journal Section
Research Article
Publication Date
October 15, 2018
Submission Date
July 23, 2018
Acceptance Date
October 14, 2018
Published in Issue
Year 2018 Volume: 19 Number: 2
Cited By
The Accumulation of Some Heavy Metals in Northern Pike (Esox lucius L., 1758) Inhabiting Sıdıklı Küçükboğaz Dam Lake (KIRŞEHİR)
Journal of Limnology and Freshwater Fisheries Research
https://doi.org/10.17216/limnofish.1024588
