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Titolo:
CHARACTERISTICS OF BUTYLTIN ACCUMULATION AND ITS BIOMAGNIFICATION IN STELLER SEA LION (EUMETOPIAS-JUBATUS)
Autore:
KIM GB; TANABE S; TATSUKAWA R; LOUGHLIN TR; SHIMAZAKI K;
Indirizzi:
EHIME UNIV,DEPT ENVIRONM CONSERVAT,TARUMI 3-5-7 MATSUYAMA EHIME 790 JAPAN EHIME UNIV,DEPT ENVIRONM CONSERVAT MATSUYAMA EHIME 790 JAPAN NOAA,NATL MARINE FISHERIES SERV,NATL MARINE MAMMAL LAB SEATTLE WA 98115 HOKKAIDO UNIV,RES INST N PACIFIC FISHERIES HAKODATE HOKKAIDO 041 JAPAN
Titolo Testata:
Environmental toxicology and chemistry
fascicolo: 11, volume: 15, anno: 1996,
pagine: 2043 - 2048
SICI:
0730-7268(1996)15:11<2043:COBAAI>2.0.ZU;2-9
Fonte:
ISI
Lingua:
ENG
Soggetto:
TRI-NORMAL-BUTYLTIN; DI-NORMAL-BUTYLTIN; ORGANOTIN COMPOUNDS; MARINE MAMMALS; TRIBUTYLTIN; IMPOSEX; SEDIMENT; WATER; BIOCONCENTRATION; ORGANOCHLORINES;
Keywords:
BUTYLTIN; STELLER SEA LIONS; AGE TREND; TEMPORAL TREND; BIOMAGNIFICATION;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Science Citation Index Expanded
Science Citation Index Expanded
Citazioni:
44
Recensione:
Indirizzi per estratti:
Citazione:
G.B. Kim et al., "CHARACTERISTICS OF BUTYLTIN ACCUMULATION AND ITS BIOMAGNIFICATION IN STELLER SEA LION (EUMETOPIAS-JUBATUS)", Environmental toxicology and chemistry, 15(11), 1996, pp. 2043-2048

Abstract

The present study was conducted to examine sex difference, age, and temporal trends of butyltin accumulation and its biomagnification in Steller sea lion (Eumetopias jubatus) collected from Alaska, USA, during1976-1985 and from Hokkaido, Japan, during 1994-1995. Average concentration of total butyltin compounds (Sigma BTs) in the liver of Stellersea lion from Alaska (19 ng/g wet weight) was much lower than those from western and eastern Hokkaido, Japan (150 and 220 ng/g), respectively. This result suggests that Japanese coastal waters are contaminatedwith BTs in comparison with those of Alaska. In most samples, dibutyltin (DBT) residues were retained at higher levels than tributyltin (TBT), suggesting the degradation of TBT to DBT in the liver. Sex difference and age-dependent accumulation of BTs residues were not found in Steller sea lion. Similarly, no prominent temporal trend in BT concentrations was observed between 1976 and 1985. Nevertheless, the annual consumption of organotin compound was doubled in the United States during the same period. These results suggest that the butyltin compounds are degraded faster than the intake from diet in Steller sea lion. The biomagnification factor of BTs in Steller sea lion was low (0.15-4.6; mean, 0.6), indicating that this animal is unlikely to magnify BTs dueto rapid degradation and excretion.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 07/07/20 alle ore 22:18:10