SU107778A1 - The device of a mote on the captive, under ice and seiner nets - Google Patents

Description

Selected ichthyological survey data show that by-catch of young fish that have not reached commercial size, especially

with ice fishing on the max, is unacceptably large.

The described device of the cattle on the intake, under-ice and seiner seines reduces the by-catch of young fish by sorting the fish catch and contributes to the rational use of fish stocks in water bodies.

The peculiarity of the boulder is that, in order to sort the fish catch and release the fry, the length of the fish is divided into two rings with a span stretched on them into three compartments with diminishing value of whose netting.

The drawing shows a portion of the seine with the ropes of the proposed device.

A fine chain, non-aqueous, with a length of 22 and a length of 10X5X2.5 and a height, connected to the water by a rope ring 2, is divided by two rings 3 and 4 into a triotsek with a total volume of 300. Rings 5 and, as well as ring 5, are made of steel and equipped with eyelets, on which with a fit /.;-Vs a net (sorting) web is fixed with a descending but separated compartment whose (80-50-30 mm) made hard thread. In the side windows of a small cell cone in front of the smaller ring 4 of the second compartment, two (or one) net shutters 6 with cords are inserted to control their opening. The flaps have a 50-52 ML1, about 1.5 m in size, a slanting fit, the upper pick at / 3 and the bottom - at - / з.

Rings motni connected with floats 7.

The side windows of the cone, together with the net flaps guided by the ringlets, are used by non-thinning to release carp and bream from the yearlings.

During feeding, both under ice fishing and in free water, after sorting, the first compartment to ring 3 is poured from

.Nb 107778

Motni large fish, and young from the middle compartment produced through the side windows, opening them with a cord. The very young fry itself are automatically released through the del of the last ring 5, which has a 30 mm length.

Subject invention

Claims (2)

1. The device of the mote on the captive, subglacial and seiner nets, characterized in that, in order to sort the fish catch and the release when young fry are drawn in, the length along the two rings with the tension drawn on them is divided into three compartments with the net width decreasing in the compartments. 2. The form of the execution of the pelt according to claim 1, characterized in that, for the purpose of releasing carp and bream, when the yearlings of the carp are fed in, the net is installed in front of the second ring. damper with cord for opening control.