Tissue distribution and correlation profiles of heavy-metal accumulation in the freshwater crayfish astacus leptodactylus

Date
2013
Authors
Tunca, E.
Ucuncu, E.
Ozkan, A.D.
Ulger, Z.E.
Tekinay, T.
Advisor
Supervisor
Co-Advisor
Co-Supervisor
Instructor
Source Title
Archives of Environmental Contamination and Toxicology
Print ISSN
0090-4341
Electronic ISSN
Publisher
Volume
64
Issue
4
Pages
676 - 691
Language
English
Type
Article
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Journal ISSN
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Abstract

The present work details the analysis of heavy-metal and metalloid concentrations in exoskeleton, gill, hepatopancreas, and abdominal muscle tissues of 60 crayfish (Astacus leptodactylus) specimens collected from Lake HirfanlI, a dam lake located in KIrşehir (Turkey) with a low metal-contamination profile. Concentrations of 11 metals (aluminum [Al], chromium [Cd], manganese [Mn], cobalt [Co], nickel [Ni], copper [Cu], molybdenum [Mo], silver [Ag], cadmium [Cd], mercury [Hg], and lead [Pb]) and a metalloid (arsenic [As]) were measured by inductively coupled plasma-mass spectrometry, and the relative frequencies of the most abundant isotopes of Cr, Cu, Ag, Cd, Hg, and Pb were evaluated. Three correlation trends were evaluated between the following: (1) different elements in the each individual tissue, (2) individual elements in different tissues, and (3) different elements in different tissues. In addition, correlation rates of growth parameters (weight, cephalothorax length, and total length) with heavy-metal and metalloid concentrations in each tissue were investigated. Our results suggest that substantial differences in metal and metalloid-accumulation levels exist between male and female specimens, with stronger correlations between the heavy-metal concentrations observed in the male cohort. It is notable that correlation trends of Co, Cu, 52As, Cr, and Ni in exoskeleton of the male specimens display strong similarities. Likewise, a very strong correlation is present in Ni-Cd and Ni-Pb accumulations in abdominal muscle of the male specimens; a similar trend is present between Cd and Pb concentrations in the same tissue of female specimens. For correlation rates of different heavy metals and metalloid in different tissues, the strongest positive association observed was between 63Cu in gill and As in hepatopancreas, whereas the strongest negative correlation was between accumulated Ni in abdominal muscle and As in exoskeleton. Strong correlations between metals and metalloid accumulations were observed between exoskeleton and gill. In many cases, metal and metalloid accumulation was negatively correlated with growth parameters. Preferential accumulation of Cr and Cu isotopes was observed in different tissues, suggesting that significant amounts of isotope fractionation occur during heavy-metal accumulation. Relatively low correlation rates were observed between 52Cr/ 53Cr and 63Cu/65Cu concentrations in several tissue types in both male and female cohorts, whereas no such trend was observed between Cd and Pb isotopes. © 2013 Springer Science+Business Media New York.

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Keywords
aluminum, arsenic, cadmium, chromium, cobalt, copper, lead, manganese, mercury, molybdenum, nickel, silver, bioaccumulation, crayfish, freshwater environment, growth rate, heavy metal, inductively coupled plasma method, isotopic analysis, isotopic fractionation, muscle, trend analysis, abdominal wall musculature, article, exoskeleton, female, gill, heavy metal poisoning, hepatopancreas, male, mass spectrometry, nonhuman, Pontastacus leptodactylus, priority journal, tissue distribution, Animals, Astacoidea, Female, Fresh Water, Gills, Hepatopancreas, Limit of Detection, Male, Mass Spectrometry, Metals, Heavy, Muscle, Skeletal, Radioisotopes, Tissue Distribution, Hirfanli Dam Lake, Turkey, Astacoidea, Pontastacus leptodactylus
Citation
Published Version (Please cite this version)