DNA is a sturdy molecule, so samples of fish taken anywhere along the trip from ocean to fork can be tested.

DNA是一个恒定的分子，因此从海洋到餐桌途中的任何地方采取的鱼类样本都可以进行测试。

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So they were able to develop methods to recognize and sort short bits of ancient DNA from longer chunks of contaminant DNA and also to fish out gene regions of interest.

因此，他们可以找到方法来识别并排序从受污染的长段DNA中提取的短段古生代DNA，并提取出感兴趣的基因段。

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They (regularly) bring up Sushigate, the 2008 case of New York City high school students who used DNA testing to discover that sushi restaurants and supermarkets were mislabeling their fish.

如果您希望生物黑客活动的圈中人士举个例子说明的话，他们会给你讲2008年发生在纽约市的“寿司门”事件，一名高中学生通过DNA测试发现寿司店和超市在改变鱼类食品的标签。

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The teams also suggested that the time for fish stocks to recover from the changes to their DNA and return to larger fish specimens will take five to 10 times longer than anticipated - if the DNA change can be reversed at all.

BBC: Fish on a trawler boat

The samples were poured through microfiber filters to extract DNA, which fish shed in their excrement, scales and body slime.

WSJ: Report: Asian carp may have reached Great Lakes

They tested 60 fish samples in the city using DNA identification.

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