You could have downloaded Yield per Recruit 3.1 from our software library for free. The most popular versions of the program are 3.1 and 2.7. This download was checked by our antivirus and was rated as safe. This program is an intellectual property of NOAA, National Marine Fisheries Service. Yield per Recruit lies within Education Tools, more precisely Science Tools.
From the developer:
Yield per Recruit (YPR) is a major revision of earlier implementations of the basic Thompson-Bell model for estimating the expected lifetime yield and biomass from a cohort subjected to varying levels of fishing mortality.
You may want to check out more software, such as Recruit Studio - 1, Recruitment Manager or Finance Pro, which might be similar to Yield per Recruit.