Responses to Selection. During the development of GIFT in the Philippines, responses to selection for improvement in weight at harvest (% gain over the previous generation) over five generations of selection were 19.1%, 13.5%, 9.2%, 17.8%, and 6.2%, respectively,totaling 65.8%.27 These results have not yet been adequately published in peer-reviewed journalร, and remain somewhat controversial.The main point at issue is the validity of control values used for comparisons between and across generations AKVAFORSK and the WorldFish Center are currently reanalyzing the data from this work, and further publications concerning responses to selection are expected in 2005.28 Critics have noted that the synthetic base
population itself, before any selective breeding, was reported to have a 60% advantage in harvest weight over widely farmed Philippine strains (footnote 27).