@article{oai:ir.kagoshima-u.ac.jp:00000751,
 author = {山崎, 繁久 and YAMASAKI, Shigehisa and 平田, 八郎 and HIRATA, Hachiro},
 issue = {1},
 journal = {鹿児島大学水産学部紀要, Memoirs of Faculty of Fisheries Kagoshima University},
 month = {Dec},
 note = {The food conversion rate is a valuable indicator for the maintenance of water quality, because
food materials other than those used in rotifer production are released into the culture water. In
this experiment, effects of salinity on food conversion rate are observed in order to reduce the
pollution through excess food materials. At the same time, an optimal salinity level within the
rotifer cultures was estimated based on their food conversion rates and tolerance to higher
salinities.
In Exp. I, population growth rate and food consumption rate were observed at nine salinity
levels within the salinity range of 2 to 40%. The density of marine Chlorella saccharophila used as
food for rotifers was maintained within the range of 2×10^<6> to 8×10^<6> cells・ml^<-1>. Culture was
continued for 14 days after rotifers were acclimated to each salinity level. In Exp. II, food
consumption rate and percentage of swimming individuals was measured at 0.5, 6, and 25 hours after rotifers were transferred to a higher salinity of 35%. The rotifers used were previously
acclimated to : 10, 12.5, 15, 20 and 30%. Chlorella density was maintained at about 4×10^<6>
cells・ml^<-1>.
In Exp. I, the highest food conversion rate was obtained at 10%. The conversion rates
became gradually lower as salinity increased and decreased. Sharp decrease in conversion rate
from 56 to 35% was observed between 20 and 25%. In Exp. II, food consumption rates of
rotifers acclimated to 20 and 30% were higher than 90% of the rotifers acclimated to 35%.
However, those of rotifers at : 10, 12.5, and 15% were less than 50%. As for the percentage of
swimming individuals, rates higher than 95% were observed at : 15, 20, and 30%. The salinity
range between 15 and 20% was estimated as an optimal salinity level. The results of this study
were aimed at direct application for the seed production of marine fishes.},
 pages = {37--43},
 title = {シオミズツボワムシの飼育における餌料効率と塩分濃度の関係},
 volume = {34},
 year = {1985}
}