中国水产科学2023，Vol.30Issue(8)：975-988,14.DOI:10.12264/JFSC2023-0111
光强和光谱对鳜摄食、生长及相关基因表达的影响
Effects of light intensity and spectrum on feeding,growth,and related gene expression of Chinese perch,Siniperca chuatsi
摘要
Abstract
In recent years,many innovative achievements have been made in the artificial culture of Chinese perch Siniperca chuatsi,but many gaps exist in the study of the effects of light environment on behavior,physiology,and biochemistry.Herein,the effects of light intensity and spectrum on behavior,feeding and growth performance of Chinese perch were studied.The feeding rates at 10,25,and 50 lx were significantly higher than those at 5,300 and 500 lx(P＜0.05).The feeding ratio was the highest(P＜0.05),under green light conditions.The results showed that the growth rate and specific growth rate in the 10 lx group were significantly higher than those in other groups(P＜0.05),and the feed coefficient was significantly lower(P＜0.05).There was no significant improvement in growth performance at 200 or 500 lx(P＞0.05).In addition,the expression level of igf1 gene in muscle was significantly higher than that in other groups under 10 lx exposure;the appetite-promoting genes npy and agrp were significantly up-regulated(P＜0.05),and the appetite-suppressing genes cart and pomc were down-regulated.At 200 and 500 lx,the expression levels of npy and agrp were not significantly different from those in the control group(P＞0.05).At the same time,the expression levels of pomc at 500 lx were significantly higher than those at 10 and 200 lx(P＜0.05).In conclusion,the growth performance of Chinese perch was significantly improved under the green light,and the appetite-promoting factors including npy and agrp and their interactions with growth-related factors promoted feeding and growth under the green light stimulation.关键词
鳜/光强/光谱/摄食/生长/食欲Key words
Siniperca chuatsi/light intensity/spectrum/feeding/growth/appetite分类
农业科技引用本文复制引用
蓝洁,梁旭方..光强和光谱对鳜摄食、生长及相关基因表达的影响[J].中国水产科学,2023,30(8):975-988,14.基金项目
湖北省重点研发计划项目(2020BBA035) （2020BBA035）
国家自然科学基金面上项目(31972809). （31972809）
