DEVICE FOR SALMON FISH ARTIFICIAL REPRODUCTION IN CONDITIONS OF RIVER FLOW

摘要

FIELD: fishing and fish farming.;SUBSTANCE: device includes a nest-incubator, which consists of a housing with caviar cells, buried in the bottom soil and a filtering spillway located behind it in the course of the flow. A dual-slop perforated lid is fixed between the front and back walls of the housing at angles from 20 to 40°. At the top of the lid there is a gap width of 0.8 to 1.0 cm to the edges of the slit transverse plates are attached, the first of which in the course of the river exceeds the height of the second. A fish-holding net is installed under the nonwatertight substrate. On the perforated lid, under the case of the incubator nest and under the filter spillway, a layer of large and medium pebbles is laid, with a filtration coefficient exceeding the filtration coefficient of the river bed soil.;EFFECT: invention provides high output of robust larvae.;7 cl, 3 dwg