| 摘要 |
A trap for anadromous migration of invertebrates in a water flow consists of a box carcass, made of organic glass, the bottom of which, two side pieces and an upper part of a trapezoidal shape form rectangular open working receiving surface for invertebrates, an insert, arranged inside the body and made as a prism, having two side pieces and the netted surface, arranged on the inner side and attached to the side pieces of the insert and two supporting plates with a rectangular opening of 20- in width in the lower part of the surface throughout the length of the prism. The bottom of the box carcass of a rectangular shape has two openings for stopper rods, the side pieces of the box carcass are arranged in perpendicular to the bottom but at angle of 80-82° to the working receiving surface for the invertebrates and form the receiving surface for a water flow, made as a netted one, larger than the working surface by 2-3 times with an incline angle of 30-35° to the bottom of the box carcass. |
