千葉県南部沿岸のアワビ浮遊幼生並びに着底稚貝の分布

概要

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In the abalone habitat, the disturbed current is caused by the swell and eddy zones are made. The eddy zones acted to collect the swimming larvae. The authors studied the distribution chazacter of swimming and deposited larvae in the nursery ground. The research stations of eddy zones were stable distribution of swimming larvae in average number of 79 individuals per cubic meter of sea water. The density of shelled larvae deposited on the conglomerate in the reef, appeared less than the deposited shelled larvae in the downfall reef on the conglomerates. It was surmised that the swimming larvae were collected by some eddy current, and made abalone habitats. And we studied commonly that these depth were below 7m of open sea with rocky shore.