室内における石炭灰コンクリート基板に対するタテジマフジツボ幼生の付着実験 Larval settlement of the barnacle Amphibalanus amphitrite on coal-flyash concrete plates in the laboratory
Larval settlement of the barnacle <i>Amphibalanus amphitrite</i> on coal-flyash concrete plates was investigated in the laboratory using a water-flow assay. Settlement was evaluated in comparison to that on ordinary concrete plates. A choice test was conducted using coal-flyash concrete and ordinary concrete plates, and no significant difference in settlement between the two kinds of plate was found, whether or not the plates had been treated with crude extract from conspecific adults. When larvae were exposed to only one type of plate in each assay, again no difference in larval settlement was observed between the two types. The number of settled barnacles on the plates could be raised by mixing crushed barnacles into the coal-flyash concrete. These results indicate that coal-flyash concrete can be used without problem as a substitute for concrete to make artificial fishing reefs.
- Sessile organisms
Sessile organisms 25(1), 25-29, 2008-02-29