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Titolo:
First report of diarrhetic shellfish toxins in magellanic fjords, southernChile
Autore:
Uribe, JC; Garcia, C; Rivas, M; Lagos, N;
Indirizzi:
Univ Magallanes, Inst Patagonia, Lab Hidrobiol, Punta Arenas, Chile Univ Magallanes Punta Arenas Chile , Lab Hidrobiol, Punta Arenas, Chile Univ Chile, Fac Med, Dept Fisiol & Biofis, Lab Bioquim Membrana, Santiago,Chile Univ Chile Santiago Chile Biofis, Lab Bioquim Membrana, Santiago,Chile
Titolo Testata:
JOURNAL OF SHELLFISH RESEARCH
fascicolo: 1, volume: 20, anno: 2001,
pagine: 69 - 74
SICI:
0730-8000(200106)20:1<69:FRODST>2.0.ZU;2-G
Fonte:
ISI
Lingua:
ENG
Soggetto:
MARINE TOXINS; OKADAIC ACID; DINOPHYSISTOXIN-1; BLOOMS;
Keywords:
Dinophysis sp.; Dinophysis acuminata; DSP toxins; Dinophysistoxin-1 (DTX-1); HPLC toxin profiles; patagonic fjords; southern Chile;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Citazioni:
32
Recensione:
Indirizzi per estratti:
Indirizzo: Uribe, JC Univ Magallanes, Inst Patagonia, Lab Hidrobiol, Casilla 113-D, Punta Arenas, Chile Univ Magallanes Casilla 113-D Punta Arenas Chile Arenas, Chile
Citazione:
J.C. Uribe et al., "First report of diarrhetic shellfish toxins in magellanic fjords, southernChile", J SHELLFISH, 20(1), 2001, pp. 69-74

Abstract

Diarrhetic shellfish poisoning (DSP) is a gastrointestinal disease caused by polyether toxins produced by dinoflagellates and accumulated in shellfish. Until now, in Chile, harmful algal blooms associated with DSP have been confined to north of 46 degrees 00 'S. Following a bloom of Dinophysis sp.,in Estero Nunez (53 degrees 19 'S, 72 degrees 30 'W) in March 1998, phytoplankton and mussel samples were collected for qualitative and quantitative analysis. Dinophysistoxin-1 (DTX-1), a diarrhetic shellfish toxin, was identified and quantified in extracts of Mytilus chilensis Hupe, a chilean native filter bivalve. DTX-1 was measured using precolumn derivatization high-performance liquid chromatography method with fluorometric detection, The presence of DSP toxins was determined by a commercial colorimetric protein Phosphatase assay (VDM-Test), which proved successful for the rapid screeningof shellfish to detect DSP toxins. Okadaic acid was not detected in any mussel samples; the mussel shells showed only the presence of DTX-1, ranging from 65.0-583.8 ng of DTX-1 per gram of mussel digestive gland. This is thefirst report and quantitative analysis of DSP toxins in the Magellan region and extends 500 miles to the south, the known distribution of DSP toxins in Chilean coasts. The phytoplankton quantitative analysis showed Dinophysis acuminata (Clarapede & Lachmann) as the most probable source of the DSP toxin.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 04/04/20 alle ore 15:20:25