摘要
对自然光照条件下云斑尖塘鳢仔鱼的昼夜摄食节律和在夜间增加不同强度外光源条件下仔鱼的摄食发生率进行了研究。结果表明,云斑尖塘鳢仔鱼具有明显的昼夜摄食节律,晚上摄食发生率是著高于白天,其摄食主要集中在光线较弱的16:00～00:00;5日龄仔鱼在100～500Lx,8日龄和12日龄仔鱼在10～100Lx光照条件下的摄食发生率要明显高于黑暗或更高光照条件下的摄食发生率。
The feeding rhythm of Oxyeleotris marmoratus （Bleeker） larvae was studied in experimental condition. The feeding incidence （FI） under different light intensity was also investigated. The results showed that an obvious circadian rhythm of feeding was observed in the larvae of 5, 8 and 12 days after hatching （DAH）. The feeding proceeded mainly during 16：00-00：00, when poor illumination occurred. Corr,paring with experiments under 10Lx, 1000Lx and absolutely darkness, the feeding incidence increased obviously under 100-500Lx for the larvae of 5 DAH and under 10-100Lx for larvae of 8, 12 DAH.
出处
《生态科学》
CSCD
2005年第3期240-242,共3页
Ecological Science
基金
广东省科技计划项目(NO.2002C20302)
关键词
云斑尖塘鳢
仔鱼
摄食节律
Oxyeleotris marmoratus
Larvae
Feeding rhythm
