UPTAKE, STORAGE AND LOSS OF CADMIUM AND LEAD IN THE WOODLOUSE PORCELLIO SCABER (CRUSTACEA, ISOPODA)

Authors
Citation
B. Witzel, UPTAKE, STORAGE AND LOSS OF CADMIUM AND LEAD IN THE WOODLOUSE PORCELLIO SCABER (CRUSTACEA, ISOPODA), Water, air and soil pollution, 108(1-2), 1998, pp. 51-68
Citations number
38
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Environmental Sciences","Water Resources","Metereology & Atmospheric Sciences
Journal title
ISSN journal
0049-6979
Volume
108
Issue
1-2
Year of publication
1998
Pages
51 - 68
Database
ISI
SICI code
0049-6979(1998)108:1-2<51:USALOC>2.0.ZU;2-L
Abstract
The dynamics of lead (Pb) and cadmium (Cd) accumulation in juvenile Po rcellio scaber were studied over 6 months after exposing them to three different concentrations of lead and cadmium in their food. Subsequen tly the ability of P. scaber to eliminate lead and cadmium was studied over two months. Growth was measured to determine whether metal conta mination leads to physiological stress in the animals. The accumulatio n of Pb and Cd in P scaber shows two different phases. Up to the age o f 2-3 months the assimilation exceeds the rate of growth and leads to rapidly increasing concentrations. After 3 months the rate of accumula tion is proportional to the rate of growth and the heavy metal concent rations remain on a stabilized level. P scaber was able to eliminate a bout 40% of the assimilated lead within 2 weeks but there was no elimi nation of Cd within 7 weeks. Contaminated P. scaber shows significant growth reduction. The physiological response of P. scaber to heavy met al contamination is discussed.