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Progress in transgenic fish techniques and application

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  • Pearl River Fishery Research Institute, Chinese academy of fisheries sciences, Guangzhou 510380, China

Received date: 2010-11-10

  Revised date: 2011-01-28

  Online published: 2011-05-25

Abstract

Transgenic technique provides a new way for fish breeding. Stable lines of growth hormone gene transfer carps, salmon and tilapia, as well as fluorescence protein gene transfer zebra fish and white cloud mountain minnow have been produced. The fast growth characteristic of GH gene transgenic fish will be of great importance to promote aquaculture production and economic efficiency. This paper summarized the progress in transgenic fish research and ecological assessments. Microinjection is still the most common used method, but often resulted in multi-site and multi-copies integration. Co-injection of transposon or meganuclease will greatly improve the efficiency of gene transfer and integration. “All fish” gene or “auto gene” should be considered to produce transgenic fish in order to eliminate misgiving on food safety and to benefit expression of the transferred gene. Environmental risk is the biggest obstacle for transgenic fish to be commercially applied. Data indicates that transgenic fish have inferior fitness compared with the traditional domestic fish. However, because of the genotype-by-environment effects, it is difficult to extrapolate simple phenotypes to the complex ecological interactions that occur in nature based on the ecological consequences of the transgenic fish determined in the laboratory. It is critical to establish highly naturalized environments for acquiring reliable data that can be used to evaluate the environ-mental risk. Efficacious physical and biological containment strategies remain to be crucial approaches to ensure the safe application of transgenic fish technology.

Cite this article

XIE Xing, TIAN Wan-Wan, GAO Feng-Yang . Progress in transgenic fish techniques and application[J]. Hereditas(Beijing), 2011 , 33(5) : 494 -503 . DOI: 10.3724/SP.J.1005.2011.00494

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