The species of interest to Dr Wirgin is the Atlantic tomcod of the Hudson river in upstate New York.

Wirgin博士感兴趣的试验种群是位于纽约哈德逊河上游的大西洋小鳕。

youdao

A mature Atlantic tomcod collected from the Hudson River.

从哈德逊河取得的一只成年大西洋小鳕。

youdao

Both Hudson tomcod and New Bedford killifish, however, have unusual AHR molecules.

哈德逊鳕鱼和新贝尔福德鳉鱼都拥有特殊的AHR。

youdao

Both Hudson tomcod and New Bedford killifish, however, have unusual AHR molecules.

ECONOMIST: Pollution and evolution

Except that in Hudson tomcod it frequently isn't.

ECONOMIST: Pollution and evolution

It is possible that the tomcod and the killifish will then evolve again, just as the peppered moth did, if their PCB-resistant proteins are not absolutely as good as the original versions which they might not be, given that evolution did not find them before.

ECONOMIST: Pollution and evolution