< Topic >Being possible, and to raise the deposit efficiency of the larva of the male , the appressorium for male cultivation which can deal with after the using simply is offered.SolutionsAppressorium 4 for male cultivation it is the board object of the plate-like which was formed with the powder and resin of the shell, the pore 5 which reaches to rear side from plane surface side in the center section is provided. Each appressorium 4 for male cultivation is disk condition, but the board object of square, in addition it can form in the board object of optional form. Furthermore, multiple spines 6 are provided on plane surface side. In addition, appressorium 4 for male cultivation has the form where the plate-like or center section swells on both sides or one side. It becomes possible for sort of the seawater to make the larva of the male the form reason come in contact which relates well evenly on both sides. Furthermore, for irregularity large number to be provided finely on the surface, adhesion it becomes possible improving.< Choice figure >Drawing 2【課題】牡蠣の幼生の付着率を高めることが可能でかつ使用後の処分を簡単に行える牡蠣養殖用付着器を提供する。【解決手段】牡蠣養殖用付着器4は、貝殻の粉末と樹脂により形成した平板状の盤体であり、その中央部に平面側から背面側に至る孔部5が設けてある。牡蠣養殖用付着器4はいずれも円盤状であるが、方形の盤体、その他任意の形状の盤体に形成できる。さらに、平面側には複数の突起部6を設ける。また、牡蠣養殖用付着器4は、平板状あるいは中央部が両側あるいは片側に膨出した形状を有する。係る形状ゆえに海水の通りがよく牡蠣の幼生を両側にまんべんなく付着させることが可能となる。更には、表面に細かな凹凸が多数設けられていることが、付着をより良くすることが可能となる。【選択図】図2
