トゲバネウミシダAntedon serrata(棘皮動物門:ウミユリ綱)の幼生はカジメとアラメの仮根部に着底する

概要

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There have been few reports on the ecology of settled larva of the feather star in the field. In order to identify the natural substrate on which the larva of feather star settles, submarine explorations were performed once a month from June 2009 through to July 2010 at Futatsujima-Islands and Koajiro Bay in Misaki, Kanagawa Prefecture, Japan. From March to July, settled larvae of Antedon serrata were observed at a depth of 3.5 to 8m at the holdfast of Ecklonia cava and Eisenia bicyclis. Up to 120 larvae clung to the basal part of a holdfast. The larvae observed on June 26th, 2009 were in different developmental stages from cystidean to late pentacrinoid. This is the first report that the larva of A. serrata settles preferentially on the holdfast of the brown algae in the field.
2011-08-20