Effects of triphenyltin exposure on the red alga Eucheuma denticulatum
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概要
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Toxic effects of triphenyltin (TPT) on the marine alga Eucheuma denticulatum obtained from Nain Island, North Sulawesi, Indonesia have been examined in laboratory condition. The algal samples were first acclimated in laboratory prepared seawater for three days. The algae were then divided into 12 culture chambers for treatments with different concentrations of TPT between 5-30 μgl^<-1> with 5μgl^<-1> interval, and in another container for control. After two-week experimentation, some samples of algae were obtained from each chamber for histopathological examination. The aniline blue stained tissue of alga E. denticulatum showed that at all TPT concentration tested, the cortex had morphological changes, even almost disappeared at higher concentration (>20μgl^<-1>). The medullary cells of alga exposed to 5-15μgl^<-1> have been decreasing in size compared to those in control. Cell walls of some medullary cells have damaged at 20μgl^<-1> and totally lysed in all cells of alga exposed to 25 and 30μgl^<-1>. The pattern of zonatedly dividing tetrasporangium had not occurred anymore in alga exposed to TPT even at the lowest tested concentration (5μgl^<-1>) and had totally damaged in higher concentrations, such as that of 20μgl^<-1>. The tetraspores in tetrasporangium seem to be fused or shrinkage, no more dividing process occurred as in control. Therefore, reproductive cells of alga is more sensitive than somatic cells, indicating that no further development of alga will occur in aquatic environment contaminated even with unlethal TPT levels.
- 東京大学の論文
- 2004-04-30
著者
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宮崎 信之
国立科学博物館動物研究部
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ARAI Takaomi
International Coastal Research Center, Ocean Research Institute, The University of Tokyo
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宮崎 信之
東京大学海洋研究所大槌臨海研究センター
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Arai T
Otsuchi Marine Research Center Ocean Research Institute University Of Tokyo
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Arai Takaomi
International Coastal Research Center Ocean Research Institute The University Of Tokyo
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RUMENGAN Inneke
Faculty of Fisheries, Sam Ratulangi University
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OHJI Madoka
International Coastal Research Center, Ocean Research Institute, The University of Tokyo
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RUMAMPUK Natalie
Faculty of Fisheries and Marine Science, Sam Ratulangi University
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GREVO Gerung
Faculty of Fisheries and Marine Science, Sam Ratulangi University
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MIYAZAKI Nobuyuki
International Coastal Research Center, Ocean Research Institute, The University of Tokyo
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宮崎 信之
東大海洋研
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宮崎 信之
東京大学海洋研究所
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Grevo Gerung
Faculty Of Fisheries And Marine Science Sam Ratulangi University
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宮崎 信之
東大 海洋研
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Rumengan Inneke
Faculty Of Fisheries Sam Ratulangi University
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Miyazaki Nobuyuki
Center For International Cooperation Ocean Research Institute The University Of Tokyo
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Rumampuk Natalie
Faculty Of Fisheries And Marine Science Sam Ratulangi University
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Miyazaki Nobuyuki
International Christian University
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Miyazaki Nobuyuki
Graduate School Of Frontier Sciences The University Of Tokyo
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