MODELING OF ROACH STOCKS DYNAMICS (RUTILUS RUTILUS, L.) OF THE KANEV RESERVOIR

There has been analyzed the current state of roach(Rutilus rutilus, L.) commercial stock of the Kanev reservoir. With the aid of cohort analysis, there were estimated fishing mortality, possible number, and biomass of commercial stock of this species for 2005?2006. There were modelled yields per recruits of silver bream using a Thompson and Bell type model. According to results, the roach commercial stock of the Kanev reservoir is exploited irrationally.