Journal of Japan Society on Water Environment
Online ISSN : 1881-3690
Print ISSN : 0916-8958
ISSN-L : 0916-8958
ORIGINALS
Inhibition Effects of Suspended and Accumulated Particles on Adhesion and Development of Undaria Pinnatifida Zoospores
Yoshihiro SUZUKIToshiroh MARUYAMATohru TAKAMIAkio MIURA
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1998 Volume 21 Issue 10 Pages 670-675

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Abstract

Effects of suspended and accumulated kaolinite particles on the adhesion and the development of Undaria pinnatifida zoospores on the substratum were investigated under the following three types of condition; Case-1: suspended particles together with zoospores, Case-2: zoospores released after accumulation of particles on the substratum, and Case-3 : accumulated particles on zoospores adhered on the substratum.
Case-2 was the most effective inhibition for the adhesion of zoospores, and 50% of effective concentration of particles (EC50) was 29 μg·cm-2. It was difficult for gametophytes to develop to sporophytes in Case-3. Furthermore, in comparing Undaria zoospores with Porphyra conchospores, the zoospores showed higher tolerance to suspended particles.

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© 1998 Japan Society on Water Environment
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