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背景色对红螯螯虾生长、存活、体色及栖息行为的影响
魏淼,顾志峰,潘志,石耀华,黄智伟,郑兴,廖秀睿,李娇妮,刘春胜,王爱民
1.海南大学海洋学院;2.北京水产技术推广站海南育种中心
摘要:
本研究通过设置5种不同背景色(白色、红色、绿色、蓝色、黑色),以探究背景色差异对红螯螯虾生长、存活、体色及栖息行为的影响。结果表明养殖56天后黑色背景色组红螯螯虾体重增长量、特定生长率和成活率最高,分别为32.66g、1.74%和76.4%,其次为绿色、蓝色和红色背景色组,白色组最差(P<0.05);黑色和红色背景色红螯螯虾饵料系数最小(3.73-3.80);黑色背景色条件下红螯螯虾体色偏蓝,ImageJ分析表明,黑色背景色组虾壳RGB值中R和G值显著低于其他各组,黑色背景色虾壳虾青素含20.2mg/kg,亦显著低于其他各组(69.3-82.2mg/kg)(P<0.05);黑色背景色条件下红螯螯虾分布于遮蔽物外的几率显著高于其它各组(P<0.05)。综上所述,背景色能够影响红螯螯虾生长存活、体色及行为分布,养殖中采用黑色作为背景色能够显著提高红螯螯虾生长存活,改善虾体颜色。
关键词:  红螯螯虾  背景色  生长  体色  行为分布
DOI:
分类号:S917.4
基金项目:海南省重点研发计划项目(ZDYF2018046);国家重点研发计划项目(2018YFD0900704)
EFFECTS OF BACKGROUND COLOR ON GROWTH, SURVIVAL, BODY COLOR AND INHABITING BEHAVIOR DISTRIBUTION OF CHERAX QUADRICARINATUS
Wei Miao1, Gu Zhifeng2, Pan Zhi3, Shi Yaohua2, Huang Zhiwei2, Zheng Xing2, Liao Xiurui2, Li Jiaoni2, Liu Chunsheng2, Wai Aimin2
1.Hainan University;2.Ocean College,Hainan University;3.Hainan Breeding Center, Beijing Aquatic Technology Extension Station
Abstract:
In this study, five different background colors (white, red, green, blue and black) were set to culture Cherax quadricarinatus, in order to investigate the effects of background color on growth, survival, body color and distribution behavior of C. quadricarinatus. After 56-day of rearing period, C.quadricarinatus of black background group showed the highest increase in body weight, specific growth rate and survival rate (32.66g, 1.74% and 76.4%), followed by the green, blue and red background groups, and the white group was the lowest (P<0.05). The feed coefficient of black and red background C. quadricarinatus was the lowest (3.73-3.80). The body color of C. quadricarinatus reared in black condition was showed bluer than other groups. ImageJ analysis showed that the R and G values of black background group were significantly lower than those in other groups, and content of astaxanthin in the black group was 20.233 mg/kg, which was significantly lower than other groups (69.338-82.152mg/kg) (P < 0.05). Moreover, the probability of C. quadricarinatus distribution outside the shelter was significantly higher in black background group than that in other groups (P<0.05). In summary, background color can significantly affect the growth, survival, body color and behavior distribution of C. quadricarinatus. It would be helpful for improve the growth and survival rate, as well as body color, of C. quadricarinatus under black background.
Key words:  Cherax quadriarinatus  background color  growth  body color  behavior distribution
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