A comparison of the ecophysiological response on copper in Baltic clams from different populations in Europe

TY - JOUR

T1 - A comparison of the ecophysiological response on copper in Baltic clams from different populations in Europe

AU - Hummel, H.

AU - Amiard, J.C.

AU - Amiard-Triquet, C.

AU - Bogaards, R.H.

AU - Lohr, A.J.

AU - Coutaud, G.

N1 - Reporting year: 2001 Metis note: 2872; CEME; ES; file:///L:/Endnotedatabases/NIOOPUB/pdfs/Pdfs2001/Hummel_ea_2872.pdf

PY - 2001

Y1 - 2001

N2 - Differences in performance and bioaccumulation of copper, metallothionein-like protein (MTLP) levels and resistance in Baltic clams, Macoma balthica, from Arctic, subarctic and temperate areas were determined during a stress period caused by starvation and exposure to copper. Although the conditions at the start were different, the losses of weight and mortality rates were in general comparable in clams from all areas. In contrast to expectation, the accumulation of copper in (sub)Arctic clams was much faster than in temperate specimens, whereas the level of MTLP in all populations hardly increased. Copper was primarily accumulated in insoluble form: MTLP has in clams no major role in copper sequestration. It is suggested that the differences in copper accumulation rates between populations might be related to genetic (racial) differentiation. [KEYWORDS: bioaccumulation; metal; copper; metallothionein; stress sensitivity; bivalve; Macoma balthica; Arctic bivalve macoma-balthica; metallothionein-like proteins; metal exposure; genetic adaptations; arctic populations; aquatic animals; southern limit; trace-metals; bioaccumulation; sensitivity]

AB - Differences in performance and bioaccumulation of copper, metallothionein-like protein (MTLP) levels and resistance in Baltic clams, Macoma balthica, from Arctic, subarctic and temperate areas were determined during a stress period caused by starvation and exposure to copper. Although the conditions at the start were different, the losses of weight and mortality rates were in general comparable in clams from all areas. In contrast to expectation, the accumulation of copper in (sub)Arctic clams was much faster than in temperate specimens, whereas the level of MTLP in all populations hardly increased. Copper was primarily accumulated in insoluble form: MTLP has in clams no major role in copper sequestration. It is suggested that the differences in copper accumulation rates between populations might be related to genetic (racial) differentiation. [KEYWORDS: bioaccumulation; metal; copper; metallothionein; stress sensitivity; bivalve; Macoma balthica; Arctic bivalve macoma-balthica; metallothionein-like proteins; metal exposure; genetic adaptations; arctic populations; aquatic animals; southern limit; trace-metals; bioaccumulation; sensitivity]

M3 - Article

SN - 0042-5516

VL - 51

SP - 195

EP - 204

JO - Vie et Milieu

JF - Vie et Milieu

IS - 4

ER -