CAJ | 학술논문

龙虎斑是由棕点石斑鱼（Epinephelus fuscoguttatus♀）和鞍带石斑鱼（Epinephelus lanceolatus♂）的杂交种。研究水温及盐度在骤变和渐变情况下龙虎斑的存活和摄食情况，结果表明：龙虎斑在温度为14～35℃的海水中均能存活和摄食，最适宜温度环境为25～35℃；温度从30℃骤变至20、25、35℃时，龙虎斑100%存活；从30℃骤变至10℃和15℃时，龙虎斑全部死亡；水温从30℃开始渐变，下降幅度为1℃/d，当下降至24℃时摄食减少，13℃时停止摄食，下降至11℃时出现死亡。龙虎斑在盐度为1～55的海水中均能存活和摄食，摄食适宜海水盐度为4～45；盐度从30骤变至5、10、15、20、25、35、40、45、50、55等盐度时，龙虎斑100%存活，骤变至0时，4 h内存活率100%，16 h存活率55.5%；盐度从30渐变，每天降低2，降至6后，每天降低1，盐度降到1时，龙虎斑的活动和摄食明显减少，渐变至0时，36 h出现死亡，48 h内全部死亡。
룡호반시유종점석반어（Epinephelus fuscoguttatus♀）화안대석반어（Epinephelus lanceolatus♂）적잡교충。연구수온급염도재취변화점변정황하룡호반적존활화섭식정황，결과표명：룡호반재온도위14～35℃적해수중균능존활화섭식，최괄의온도배경위25～35℃；온도종30℃취변지20、25、35℃시，룡호반100%존활；종30℃취변지10℃화15℃시，룡호반전부사망；수온종30℃개시점변，하강폭도위1℃/d，당하강지24℃시섭식감소，13℃시정지섭식，하강지11℃시출현사망。룡호반재염도위1～55적해수중균능존활화섭식，섭식괄의해수염도위4～45；염도종30취변지5、10、15、20、25、35、40、45、50、55등염도시，룡호반100%존활，취변지0시，4 h내존활솔100%，16 h존활솔55.5%；염도종30점변，매천강저2，강지6후，매천강저1，염도강도1시，룡호반적활동화섭식명현감소，점변지0시，36 h출현사망，48 h내전부사망。
Dragon-tiger grouper, a grouper hybrid from Epinephelus fuscoguttatus (♀) × Epinephelus lanceolatus (♂) has wide prospects in artificial marine fish aquaculture. The effects of temperature and salinity on the survival rate and food intake of dragon-tiger groupers were investigated. The results showed that dragon-tiger groupers can survive and consume food at 16-35℃with the optimum range at 25-35℃. Under sudden temperature changes, dragon-tiger groupers all died at 10-15℃ in 24 hours. However, at 20-35℃ the survival rate was 100%. When temperature gradually declines, food intake reduced at 24℃and stopped at 13℃. Finally, death occurred at 11℃. Dragon-tiger groupers can survive and feed in salinity 1-55 and the suitable salinity in 4-45. Under sudden salinity change from 30 to 5, 10, 15, 20, 25, 35, 40, 45, 50, 55, the survival rate of dragon-tiger groupers was 100%. Under gradual salinity decrease conditions, dragon-tiger groupers significantly reduced its activity and food intake when salinity dropped to 1, and the dragon-tiger groupers began to die in 36 h and all of them died out within 48 h when salinity dropped to 0.