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Information × Registration Number 0225U001923, (0124U003410) , R & D reports Title Development of scientific substantiation of the methodology for sampling aquatic biological resources from the total volume of catch during fishing to determine percentages of juvenile bycatch and total percentages of individual aquatic biological resources in the catch and determination of the volume of illegally extracted aquatic biological resources during overfishing of the permissible daily rate by amateur fishermen popup.stage_title Розробка наукового обґрунтування методики відбору проб водних біоресурсів із загальних обсягів улову при здійсненні промислу для визначення відсотків прилову молоді і загальних відсотків окремих водних біоресурсів в улові та визначення обсягів незаконно вилучених водних біоресурсів при здійсненні перелову допустимої добової норми рибалками – любителями. Head Demyanenko Kostyantian V., Кандидат біологічних наук Registration Date 11-02-2025 Organization STATE SCIENTIFIC INSTITUTION INSTITUTE OF FIHERIES, MARINE ECOLOGY AND OCEANOGRAPHY (SSI IFMEO) popup.description1 The scientific definition is due to the need to determine the percentages of juvenile bycatch and the total percentages of individual aquatic biological resources in the catch and the determination of the volume of illegally extracted aquatic biological resources when overfishing the permissible daily rate by amateur fishermen. popup.description2  The main purpose of establishing the maximum allowable rate of juvenile bycatch is to ensure the maximum catch per unit of replenishment (taking into account the rate of weight growth and elimination due to natural mortality) and an acceptable spawning rate in terms of compensation for removed individuals by new generations. From a biological and fishery point of view, this can be explained as follows: individuals allowed for catch have a spawning rate of at least 1, i.e. they manage to produce offspring before being removed; fishing limits are calculated based on the average mass of a sexually mature individual, i.e. with an increased bycatch of juveniles, the total number of removed individuals (for the same mass of catch) will be significantly higher; removal is carried out long before reaching the age of ichthyomass culmination, i.e. the bioproduction reserves of the species, as a raw material base for fishing, are used extremely irrationally. Product Description popup.authors Didenko Oleksandr V. popup.nrat_date 2025-02-11 Close