FIELD: fishing and fish farming.
SUBSTANCE: device includes a set of metal rods sharpened at the end, the diameter of which varies depending on the type of fish being studied, with a groove for eggs. Depth, width and radius of coring of groove of rods vary depending on the studied type of sturgeon and carp fishes in four ranges and correspond to dimensions of follicles at the fourth complete stage of gonads maturity. Length (X) of groove is multiple to size of oocytes of these species of fishes at IV complete stage of maturity.
EFFECT: device allows to reduce traumatism of analyzed fish and provides integrity of extracted follicles.
1 cl, 2 dwg
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