M.D. Belampapueng, A. Hagiwara, A. Nishi, K. Imaizumi, K. Hirayama-1997
Fisheries Science, 63: 236-241, in Rotifer News, 30 (Dec '97)
An average harvest of 9.0 x 10^4 resting eggs per a gram (dry weight) N. oculata was achieved, which was 2.5 times more efficient than from batch cultures. Two out of four cultures collapsed on 15-20th days, probably due to the bacterial effect. The semi-continuous cultures were stabilized by placement of a nylon filter to remove particulate organic materials. With a filter, 1.3 times more resting eggs were harvested on average.
(Nagasaki Univ., Fac. Fisheries, Bunkyo 1-14, Nagasaki 852, Japan)