It turns out that 'genetically engineered tropical fish that glows when illuminated with black light' breeds in nature
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With the development of genetically modified technology, flashy-looking fish such as 'colorful fish' and 'fish that shine when illuminated with black light' are being developed in the ornamental fish market. The scientific journal Science reports that such genetically modified ornamental fish have become established in nature.
Transgenic glowing fish invades Brazilian streams | Science | AAAS
https://www.science.org/content/article/transgenic-glowing-fish-invades-brazilian-streams
Speaking of flashy ornamental fish that look like, in the past it was common to improve varieties by repeating mating to separate flashy individuals, but in recent years, by using genetic recombination technology, 'fish that shine when irradiated with black light' etc. Ornamental fish with strange characteristics are also produced. For example, the fish under the brand name 'Glo Fish' below is sold for $ 56.99 (about 6900 yen) as a set of 6 fish that glow pink and green when illuminated with black light.
The release of genetically modified organisms such as those mentioned above into the natural world is prohibited because it has a great impact on the ecosystem. However, in 2014, a living individual of Glo Fish was identified in a canal in Florida. It is speculated that GloFish was preyed before the next generation, as predators such as largemouth bass lived in this canal.
Then, in 2015, genetically modified zebrafish were discovered in Brazil's 'rivers without predators of zebrafish'. According to the research team that discovered the genetically modified zebrafish in Brazil, the zebrafish in question matures earlier than the general zebrafish, and it may continue to grow and have a great impact on the ecosystem. It has been pointed out.
Furthermore, since genetically modified zebrafish have a more prominent color than natural zebrafish without irradiating with black light, there are many 'conspicuous color zebrafish' by mating existing zebrafish with genetically modified zebrafish. There are also concerns that if born, they will be more likely to be targeted by predators.
by Karen Swain
According to Andre Magalyanis, who discovered the genetically modified zebrafish in Brazil, the number of genetically modified zebrafish is small at the time of writing, but Magalyanis points out that it may cause great damage in the future. increase.
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