Interspecific comparison of Cd bioaccumulation in European Pectinidae (Chlamys varia and Pecten maximus)
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Delineation of Pb contamination pathways in two Pectinidae: the variegated scallop Chlamys varia and the king scallop Pecten maximus.
Bioaccumulation of Pb was determined in Chlamys varia and Pecten maximus exposed to (210)Pb via seawater, food and sediment. Both scallops readily concentrated dissolved Pb with whole-body 7-d concentration factors of 250+/-40 and 170+/-70, respectively. In both species, more than 70% of Pb taken up from seawater was strongly retained within tissues (biological half-life>1.5 month) whereas Pb i...
متن کاملInterspecific and geographical variations of trace element concentrations in Pectinidae from European waters.
Cd, Cu and Zn were analysed in the organs and tissues of the three scallop species from the Bay of Biscay, the variegated Chlamys varia L., the queen scallop Aequipecten opercularis L. and the common scallop Pecten maximus L. for interspecific comparisons. In P. maximus the greatest concentrations of Cd and Cu were found in the digestive gland, whereas the two other species showed similar level...
متن کاملDelineation of Pb contamination pathways in two Pectinidae : the variegated scallop 1
Delineation of Pb contamination pathways in two Pectinidae: the variegated scallop 1 Chlamys varia and the king scallop Pecten maximus 2 3 Marc Metian, Michel Warnau, François Oberhänsli, Paco Bustamante 4 5 6 1 International Atomic Energy Agency – Marine Environment Laboratories, 4 Quai Antoine 7 Ier, MC-98000 Principality of Monaco 8 2 Littoral Environnement et Sociétés (LIENSs), UMR 6250 CNR...
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We isolated and characterized nine polymorphic microsatellite loci from the great scallop ( Pecten maximus ) as part of an attempt to better understand the population–genetic structure of this species. Levels of genetic diversity were assessed in 32 scallops collected from the coastal waters of Port Erin Bay, Isle of Man. The number of alleles ranged from two to 29 and observed and expected het...
متن کاملRepeated Sequences and Large-Scale Size Variation of Mitochondrial DNA: A Common Feature among Scallops (Bivalvia: Pectinidae)’
The mitochondrial genomes of seven species of scallops were examined for the presence of repeated sequences and within-species size variation. The mtDNA of one species, Argopecten irradians, shows a typical 16.2-kb invariant size and ap parently lacks repeated sequences. The mtDNA of another species, Placopecten mageilanicus, is known to be very large (>3 1 kb), to contain a tandemly repeated s...
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