Friday, November 22, 2013

Transgenic Salmon and the use of genes from the Zebrafish to better protect these cultured fish from diseases and pathogens.





The article, "Isolation of the Atlantic salmon β-actin promoter and its use to drive expression in salmon cells in culture and in transgenic zebrafish," portrays how genetic roles with salmon aquaculture are continuously growing. Researchers are working towards successful genetic improvement of the fish. Many scientists study which genes are in control of disease protection or which genes can be enhanced to enlarge the size of the fish. Transgenic salmon have recently been introduced to the world of aquaculture. Those genes that control the growth hormones in the salmon are altered to be more receptive and therefore pump more of this hormone into the fish. This will increase the size, as stated before, and furthermore increase the production of the salmon crop. To salmon famers this sounds like a dream come true. However, the general consensus of the human population is not as confident with consuming transgenic salmon. This feeling of doubt is not uncommon since there is still minimal evidence of the effects, if any, on human life after they eat these salmon.




I personally feel that introducing genes from another organism into the salmon populations, controlled in cultures, is a smart idea, but with multiple outcomes. I agree with the general consensus of the public,  and demand more answers before this becomes an everyday occurrence in salmon aquaculture. There are so many "what if" questions that come from mixing genetics of different species. Therefore research must be conducted to test not only how the new genes will effect the fish, but also how ingesting the fish will affect the humans who eat them. 



Source: http://fx5ly8ju5l.search.serialssolutions.com

Below is a link to another article which provides more information about the Zebrafish:
http://www.academia.edu/528432/Zebrafish_as_a_model_organism_for_nutrition_and_growth_towards_comparative_studies_of_nutritional_genomics_applied_to_aquacultured_fishes

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