We investigated metallothionein (MT) induction in the talitrid amphipod Talitrus saltator, a well-established biomonitor of trace metal contamination in the supralittoral environment, in response to laboratory exposure to Hg, Cd, or Cu for 3, 6, 24, and 48 h. Analyses were also carried out on animals collected in the wild from six localities along the Tuscan coast with different degrees of trace metal contamination. Animals exposed to Hg in the laboratory showed a strong dose-dependent increase of MT levels after 3 and 6 h; in the following hours (24 and 48 h), the MT concentrations reached control levels, possibly due to a general toxic effect of Hg. For the other metals, MT induction was observed in animals exposed to 10 ppm of Cd and 5 and 10 ppm of Cu. Therefore, despite the positive correlation between MT concentrations and trace metals in sandhoppers collected in the wild, the fast MT response observed in the laboratory suggests an inappropriate use of MT as biomarkers to assess trace metal pollution in coastal areas.

Ungherese, G., Baroni, D., Bruni, P., Focardi, S., Ugolini, A. (2011). Metallothionein Induction in the Sandhopper Talitrus saltator (Montagu) (Crustacea, Amphipoda). WATER AIR AND SOIL POLLUTION, 219(1-4), 343-351 [10.1007/s11270-010-0711-7].

Metallothionein Induction in the Sandhopper Talitrus saltator (Montagu) (Crustacea, Amphipoda)

BARONI, D.;FOCARDI, S.;
2011-01-01

Abstract

We investigated metallothionein (MT) induction in the talitrid amphipod Talitrus saltator, a well-established biomonitor of trace metal contamination in the supralittoral environment, in response to laboratory exposure to Hg, Cd, or Cu for 3, 6, 24, and 48 h. Analyses were also carried out on animals collected in the wild from six localities along the Tuscan coast with different degrees of trace metal contamination. Animals exposed to Hg in the laboratory showed a strong dose-dependent increase of MT levels after 3 and 6 h; in the following hours (24 and 48 h), the MT concentrations reached control levels, possibly due to a general toxic effect of Hg. For the other metals, MT induction was observed in animals exposed to 10 ppm of Cd and 5 and 10 ppm of Cu. Therefore, despite the positive correlation between MT concentrations and trace metals in sandhoppers collected in the wild, the fast MT response observed in the laboratory suggests an inappropriate use of MT as biomarkers to assess trace metal pollution in coastal areas.
Ungherese, G., Baroni, D., Bruni, P., Focardi, S., Ugolini, A. (2011). Metallothionein Induction in the Sandhopper Talitrus saltator (Montagu) (Crustacea, Amphipoda). WATER AIR AND SOIL POLLUTION, 219(1-4), 343-351 [10.1007/s11270-010-0711-7].
File in questo prodotto:
File Dimensione Formato  
109077_UPLOAD.pdf

non disponibili

Tipologia: Altro materiale allegato
Licenza: NON PUBBLICO - Accesso privato/ristretto
Dimensione 202.11 kB
Formato Adobe PDF
202.11 kB Adobe PDF   Visualizza/Apri   Richiedi una copia

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11365/7489
 Attenzione

Attenzione! I dati visualizzati non sono stati sottoposti a validazione da parte dell'ateneo