Problem to be solved: to provide an inexpensive shell shellfish avoidance device which can be manufactured at a low cost and can be easily installed in order to prevent excessive consumption of power supply due to the occurrence of no leakage or short circuit, and for a simple construction.Solution comprising an insulating memberThe main body 2 which is equipped with the cultivation container aroundBottom surface 2b of bodyA pair of electrodes 3 provided on the outer peripheral surface 2C and the inner peripheral surface4 andA pair of electrodesA power supply part 5 is provided for supplying power toA pair of electrodes 3 provided on the lower surface4The body 2 is spaced apart from the outer peripheral surface 2C and on the inner peripheral surface 2D.Bottom face 2BIn the vertical plane of the bodyA pair of electrodesBetweenA recess recessed toward the upper surface 2a of the body 2 is formed.Diagram【課題】漏電や短絡が発生しないために電源電力の過剰な消耗を誘発せず、しかも簡易な構成のために、安価に製造できるとともに容易に設置し得る陸貝忌避装置を提供する。【解決手段】絶縁性部材からなり、栽培容器を周回して設けられる無端の本体２と、本体２の下面２ｂ、外周面２ｃ及び内周面２ｄに設けられる一対の電極３，４と、一対の電極３，４に電力を供給するための電源部５を備え、下面２ｂに設けられる一対の電極３，４は、本体２の外周面２ｃ寄り及び内周面２ｄ寄りに間隔を空けて配置され、下面２ｂは、本体２の縦断面において、一対の電極３，４の間に、本体２の上面２ａ側に向かって凹んだ凹部が形成される。【選択図】図１
