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Effect of maternal exposure to tributyltin on reproduction of the pearl oyster ( Pinctada fucata martensii )
Author(s) -
Inoue Suguru,
Oshima Yuji,
Nagai Kiyohito,
Yamamoto Takashi,
Go Jyoji,
Kai Norihisa,
Honjo Tsuneo
Publication year - 2004
Publication title -
environmental toxicology and chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.1
H-Index - 171
eISSN - 1552-8618
pISSN - 0730-7268
DOI - 10.1897/03-265
Subject(s) - tributyltin , pinctada fucata , pearl oyster , biology , reproduction , larva , embryo , pearl , oyster , andrology , fishery , toxicology , ecology , medicine , philosophy , theology
We examined the effect of tributyltin (TBT) on reproduction of the pearl oyster ( Pinctada fucata martensii ). In a maternal exposure test, five female pearl oysters were exposed to TBT at measured concentrations of 0 (control), 0.092, or 0.191 μg/L at 25°C for one week, and the embryo developmental success (the ratio of normal D‐larvae to all larvae) was measured. The embryo developmental success was significantly decreased in the 0.191‐μg/L treatment group (65.5%) compared to that in the control group (82.5%; p = 0.031). Concentrations of TBT in the ovary reached 0.088 μg/g in the 0.191‐μg/L treatment group. In a waterborne exposure test, inseminated eggs were exposed to TBT at measured concentrations of 0 (control), 0.020, 0.045, 0.091, 0.192, or 0.374 μg/L for 24 h. The embryo developmental success also was significantly decreased in the 0.192‐μg/L treatment group (78.3%; p = 0.020) and no development at all was observed in the 0.374‐μg/L treatment group compared with that in the control group (95.4%). These results clearly demonstrate that TBT accumulating in the bodies of bivalves has the potential to inhibit reproduction.