METHOD OF EVALUATING ROACH SPAWNERS READY FOR SPAWNING MIGRATION

摘要

FIELD: agriculture, fishery. ^ SUBSTANCE: invention refers to the sphere of ichthyology dealing with fish environmental physiology. The method implies estimating the content of lipids in the white muscles of maturity stage III and III-IV roach spawners during the pre-wintering period preceding spawning migration. The spawners with a lipid content rating no less than 0,8% of wet weight are classified as potentially ready for spring spawning migration. ^ EFFECT: providing for quantitative evaluation of roach spawners potentially ready for spring spawning migration. ^ 1 tbl