Molecular cloning and expression analysis of the retinoid X receptor (RXR) gene in golden pompano Trachinotus ovatus fed Artemia nauplii with different enrichments
文献类型: 外文期刊
作者: Yang, Qibin 1 ; Zheng, Panlong 1 ; Ma, Zhenhua 1 ; Li, Tao 1 ; Jiang, Shigui 1 ; Qin, Jian G. 4 ;
作者机构: 1.Chinese Acad Fishery Sci, South China Sea Fisheries Res Inst, Guangzhou, Guangdong, Peoples R China
2.Minist Agr, Key Lab South China Sea Fishery Resources Exploit, Guangzhou, Guangdong, Peoples R China
3.Shanghai Ocean Univ, Coll Fisheries & Life Sci, Shanghai, Peoples R China
4.Flinders Univ S Australia, Sch Biol Sci, Adelaide, SA 5001, Australia
关键词: Enrichment;Artemia nauplii;Jaw malformation;RXR alpha;RXR beta;Gene expression;Golden pompano larvae
期刊名称:FISH PHYSIOLOGY AND BIOCHEMISTRY ( 影响因子:2.794; 五年影响因子:2.876 )
ISSN:
年卷期:
页码:
收录情况: SCI
摘要: The retinoid X receptors (RXRs) are involved in the skeletal development and other biological process such as blood vessel formation and metabolism. Partial sequences of RXR alpha and beta genes were obtained, and their expressions were quantified on golden pompano Trachinotus ovatus at 28 days post hatching (DPH) to explore the molecular response to nutritional manipulation in fish larvae. As live food, Artemia nauplii were separately enriched with Nannochloropsis and Algamac 3080 and non-enriched Artemia nauplii (control) for fish feeding. The expressions of RXRs were detected in the embryos and fish larvae at early stages, suggesting that the skeletal development in golden pompano initiated before yolk re-sorption completion. Fish fed non-enriched Artemia nauplii ended up with higher jaw malformation. The highest specific growth rate was obtained when fish were fed with the Artemia nauplii enriched with Algamac 3080, and the lowest growth rate was observed when fish were fed with unenriched Artemia nauplii. The highest survival was obtained when fish were fed with non-enriched or Nannochloropsis-enriched Artemia nauplii. This study indicates that the use of enriched formula for Artemia nauplii can significantly affect the expression levels of RXRs and jaw malformation of golden pompano larvae, but there is no clear correlation between RXRs expressions and malformation rates when fish are subjected to nutrient challenge.
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