CAJ | 학술논문

以自行配组获得的尼萨F2家系与混合后代为材料，比较了不同交配方式后代幼鱼的耐盐性能、不同盐度下生长差异。结果显示，尼萨F2家系与混合后代的平均存活时间（ MST）、50％存活时间（ ST50）、96 h半致死盐度（MLS-96）均显著高于对照组尼罗罗非鱼。除家系2显著高于混合后代外，各家系的耐盐指标MST、ST50和MLS-96与混合后代间无显著差异（P＞0．05）。除0 g/L下家系5的日均增重率显著高于混合后代外，同一盐度（15，20，25 g/L）下，各家系的日均增重率与混合后代间均无显著差异（P＞0．05），尼萨F2体重变异系数在25 g/L盐度下表现最低。研究结果为尼萨杂交育种与生产利用提供了基础资料。
이자행배조획득적니살F2가계여혼합후대위재료，비교료불동교배방식후대유어적내염성능、불동염도하생장차이。결과현시，니살F2가계여혼합후대적평균존활시간（ MST）、50％존활시간（ ST50）、96 h반치사염도（MLS-96）균현저고우대조조니라라비어。제가계2현저고우혼합후대외，각가계적내염지표MST、ST50화MLS-96여혼합후대간무현저차이（P＞0．05）。제0 g/L하가계5적일균증중솔현저고우혼합후대외，동일염도（15，20，25 g/L）하，각가계적일균증중솔여혼합후대간균무현저차이（P＞0．05），니살F2체중변이계수재25 g/L염도하표현최저。연구결과위니살잡교육충여생산이용제공료기출자료。
F2 family offsprings and mixed group were obtained by paired and mixed mating the hybrid F 1 indi-viduals of Oreochromis niloticus ♀×Sarotherodon melanotheron♂,respectively .The salt tolerance and growth un-der different salinities (0,15,20,25 g/L) of juvenile fishes from two mating modes were compared .The results showed that MST ,ST50 ,MLS-96 of O.niloticus♀×S.melanotheron♂F2 were higher than that of the control group O.niloticus(P<0.05).No significant differences in MST,ST50 and MLS-96 indexes were observed between the family offsprings and mixed group (P>0.05) except for the family 2.Under the same salinity conditions,there wasn’t significant difffernces in the average growth rate between the family offsprings and mixed group (P>0.05) with a exception of family 5 in 0 g/L sanility,O.niloticus♀×S.melanotheron♂F2 exhibited the lowest weight co-efficient of variation at 25 g/L sanility.The results provided some basic data for hybrization and utilization of O.niloticus ×S.melanotheron.