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Timing of sex disturbance caused by tributyltin exposure during the embryonic stage in the caprellid amphipod, Caprella danilevskii

Published online by Cambridge University Press:  19 September 2003

Madoka Ohji ,
Takaomi Arai  and
Nobuyuki Miyazaki
Madoka Ohji*
Affiliation:
Otsuchi Marine Research Center, Ocean Research Institute, University of Tokyo, 2-106-1, Akahama, Otsuchi, Iwate 028-1102, Japan
Takaomi Arai
Affiliation:
Otsuchi Marine Research Center, Ocean Research Institute, University of Tokyo, 2-106-1, Akahama, Otsuchi, Iwate 028-1102, Japan
Nobuyuki Miyazaki
Affiliation:
Otsuchi Marine Research Center, Ocean Research Institute, University of Tokyo, 2-106-1, Akahama, Otsuchi, Iwate 028-1102, Japan
*
*Corresponding author, e-mail: ohji@wakame.ori.u-tokyo.ac.jp
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Abstract

Caprellid amphipods, Caprella danilevskii were exposed to tributyltin (TBT) (100 ng 1−1) for ten periods after eggs were deposited in the brood pouch. Brood loss during incubation was found in six exposure periods between 12 and 72 h after spawning, although no brood loss was observed in the control. It was suggested that exposure to TBT half a day after spawning might be sufficient to damage reproduction during the caprellid's embryonic life. The female percentage was 38.7% in the control, whereas it was gradually increased to 60.0–71.4% in the four exposure periods between 12 and 48 h after spawning.

Type
Research Article
Information
Journal of the Marine Biological Association of the United Kingdom , Volume 83 , Issue 5 , October 2003 , pp. 943 - 944
Copyright
Copyright © Marine Biological Association of the United Kingdom 2003

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References

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