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Titolo:
Comparison of metallothionein concentrations and tissue distribution of trace metals in crabs (Pachygrapsus marmoratus) from a metal-rich estuary, inand out of the reproductive season
Autore:
Mouneyrac, C; Amiard-Triquet, C; Amaird, JC; Rainbow, PS;
Indirizzi:
IRFA, Dept Sci Vie & Terre, Lab Ecol Anim, F-49100 Angers, France IRFA Angers France F-49100 Terre, Lab Ecol Anim, F-49100 Angers, France ISOMer, Fac Pharm 1, Serv Ecotoxicol, CNRS,GDR 1117, F-44035 Nantes 1, France ISOMer Nantes France 1 otoxicol, CNRS,GDR 1117, F-44035 Nantes 1, France Nat Hist Museum, Dept Zool, London SW7 5BD, England Nat Hist Museum London England SW7 5BD ept Zool, London SW7 5BD, England
Titolo Testata:
COMPARATIVE BIOCHEMISTRY AND PHYSIOLOGY C-TOXICOLOGY & PHARMACOLOGY
fascicolo: 3, volume: 129, anno: 2001,
pagine: 193 - 209
SICI:
1532-0456(200107)129:3<193:COMCAT>2.0.ZU;2-6
Fonte:
ISI
Lingua:
ENG
Soggetto:
OYSTERS CRASSOSTREA-GIGAS; NATURAL FACTORS SALINITY; CARCINUS-MAENAS L; CALLINECTES-SAPIDUS; BLUE-CRAB; LITTORINA-LITTOREA; FRESH-WATER; MOLT CYCLE; CADMIUM; COPPER;
Keywords:
crab; Pachygrapsus marmoratus; Gironde estuary (France); metallothionein; cadmium; copper; zinc; reproductive period;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Life Sciences
Citazioni:
60
Recensione:
Indirizzi per estratti:
Indirizzo: Mouneyrac, C IRFA, Dept Sci Vie & Terre, Lab Ecol Anim, 44 Rue Rabelais, F-49100 Angers, France IRFA 44 Rue Rabelais Angers France F-49100 00 Angers, France
Citazione:
C. Mouneyrac et al., "Comparison of metallothionein concentrations and tissue distribution of trace metals in crabs (Pachygrapsus marmoratus) from a metal-rich estuary, inand out of the reproductive season", COMP BIOC C, 129(3), 2001, pp. 193-209

Abstract

Crabs, Pachygrapsus marmoratus, were sampled in June 1997 and February 1998 from two sites (at the mouth and 25 km upstream) in the metal-rich Gironde estuary, France. Gills and hepatopancreas were analysed for metal (Cd, Cu, Zn) and metallothionein (MT) contents, in order to examine the influence of both biological and environmental factors on the physico-chemical forms of detoxified metal storage in the crabs. The concentrations of MT and bothcytosolic and insoluble metals were not greatly different between males and females, and the influence of organ weights was also minimal. Intersite differences were observed, probably resulting from the gradient of salinity in the estuary, which interacts with both the chemical speciation and bioavailability of metals, and the general protein metabolism of the crabs. Seasonal changes were also important, probably in interaction with the moult and reproductive cycles. In February, concentrations of insoluble metals weregenerally higher than in June, in both organs, suggesting that essential metals, particularly Zn, are stored during winter then remobilised during the breeding season. The natural variability in the concentrations of MT often concealed any relationship with accumulated metal concentrations. Thus MTin crabs cannot be considered as a useful biomarker of metal pollution. (C) 2001 Elsevier Science Inc. All rights reserved.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 31/03/20 alle ore 22:44:05