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Light cycle effects on Haliotis discus hannai Ino growth, energy budget, and related gene expression
Gao Xiaolong1,2; Zhang Mo1; Li Xian1; Wu Fucun1; Song Changbin3; Liu Ying2
2018-01-20
Source PublicationAQUACULTURE
Volume483Pages:213-222
SubtypeArticle
AbstractThis study investigated the effects of different light cycles on growth, food intake, energy budget, and related gene expression of the abalone Haliotis discus hannai Ino. Abalones (mean +/- standard error shell length: 30.28 +/- 1.64 mm, body weight: 4.51 +/- 0.49 g) were exposed to the following light cycles: 0L:24D, 4L:20D, 8L:16D, 12L:12D, and 16L:8D for 60 days, four repetitions were provided for each light cycle. At the end of the experiment, there was no significant difference in shell length or body weight growth rate between 0L:24D and 4L:20D (P > 0.05), the values of which were significantly higher than in 16L:8D (P < 0.05). In 0L:24D, abalone food intake was significantly higher compared with in the other groups (P < 0.05), but the food conversion efficiency was significantly lower than in 4L:20D (P < 0.05). At the end of the experiment, in 16L:8D, the activity of hexokinase was significantly higher than in any other group (P < 0.05), but in 12L:12D and 16L:8D, it significantly increased compared with Day 30 (P < 0.05). In 0L:24D, 4L:20D, and 8L: 16D, cellulase and pyruvate kinase activity was significantly higher than in 12L:12D and 16L:8D (P < 0.05). There was no significant difference in the energy acquired from food in 0L:24D and 4L:20D (P > 0.05). However, the energy loss via feces and respiratory metabolism in 0L: 24D was significantly higher than in 4L: 20D (P < 0.05); therefore, the energy accumulated for individual growth was significantly lower than in 4L:20D (P < 0.05). Although the energy loss via feces, excretion, and respiratory metabolism was significantly lower in 16L:8D compared with 0L:24D, 4L:20D, and 8L:16D, the ratio of the energy loss via feces and respiratory metabolism to the energy acquired from food intake was significantly higher than in any other group (P < 0.05); therefore, the net growth efficiency K-2 was significantly lower (P < 0.05). In 16L:8D, gene expression levels of manganese superoxide dismutase (Mn-SOD), catalase (CAT), TPx, heat shock protein (HSP) 26, HSP70, and HSP90 were significantly higher than in any other group (P < 0.05). At the end of the experiment, Mn-SOD, CAT, and HSP70 expression in 16L:8D significantly increased compared with Day 30 (P < 0.05). Therefore, considering aquaculture production and business costs, it would be appropriate to select the light cycle of 4L:20D for the culture of H. d. hannai.
KeywordHaliotis Discus Hannai Ino Light Cycle Activity Of Digestive Enzymes Energy Budget Gene Expression
DOI10.1016/j.aquaculture.2017.10.010
Indexed BySCI
Language英语
WOS IDWOS:000414417800027
Citation statistics
Document Type期刊论文
Version出版稿
Identifierhttp://ir.qdio.ac.cn/handle/337002/143065
Collection海洋环境工程技术研究发展中心
实验海洋生物学重点实验室
Affiliation1.Chinese Acad Sci, Inst Oceanol, Qingdao 266071, Peoples R China
2.Dalian Ocean Univ, Dalian 116023, Peoples R China
3.Chinese Acad Sci, Inst Semicond, Beijing 100083, Peoples R China
Recommended Citation
GB/T 7714
Gao Xiaolong,Zhang Mo,Li Xian,et al. Light cycle effects on Haliotis discus hannai Ino growth, energy budget, and related gene expression[J]. AQUACULTURE,2018,483:213-222.
APA Gao Xiaolong,Zhang Mo,Li Xian,Wu Fucun,Song Changbin,&Liu Ying.(2018).Light cycle effects on Haliotis discus hannai Ino growth, energy budget, and related gene expression.AQUACULTURE,483,213-222.
MLA Gao Xiaolong,et al."Light cycle effects on Haliotis discus hannai Ino growth, energy budget, and related gene expression".AQUACULTURE 483(2018):213-222.
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