摘要
本文研究了不同饥饿时间对日本沼虾Macrobrachium nipponense摄食节律的影响。结果表明,饥饿后恢复投饵初始日本沼虾表现出强烈的摄食,摄食节律为单峰型,随着时间的延长,多峰型摄食节律出现。饥饿4d的日本沼虾在饥饿过程中并未出现饥饿死亡现象,恢复投喂后在较短时间内(5d)即可恢复正常的摄食节律。饥饿8d组在饥饿的第6～8d便可明显观察到虾体色异常并有部分死亡,说明饥饿8d已经影响到了日本沼虾的存活。饥饿8d组日本沼虾摄食高峰的变化无明显规律,恢复到正常摄食节律需要较长时间。
The effects of starvation on feeding rhythm of the shrimp Macrobrachium nipponense were studied. The results showed that the shrimps represented strong feeding in the preliminary period of realimentation after starvation, showing unimodal feeding rhythm and gradually multimodal one. No death happened in the shrimps during 4 days starvation and feeding rhythm restored in short time （5 days）. The abnormal body colour and some deaths Of shrimps during 8 days starvation were observed, which showed that shrimps survival were menaced. The feeding rhythm of shrimps undergoing 8 days starvation was irregular and needed a longer time to restore to natural status.
出处
《四川动物》
CSCD
北大核心
2008年第5期843-844,847,共3页
Sichuan Journal of Zoology
关键词
日本沼虾
饥饿
摄食节律
Macrobrachium nipponense
starvation
feeding rhythm
