密歇根新闻广播 正确的吃鱼方法

Fish consumption advisories¹ usually focus on one chemical at a time – like mercury – and these advisories tell you how much of each kind of fish you should eat, and what to avoid. But they don’t often tell you much about mixtures of different chemicals in the environment that could be in fish.

Ken² Drouillard is a professor at the Great Lakes Institute for Environmental Research at the University of Windsor. He’s an author of a new study that looks at chemical mixtures and fish advisories.

“Generally, the fish consumption advice tries to put in the state of the art in terms of what we know about the toxicology of these contaminants and how to best reduce health impacts through the consumption of sport fish. The approach that we took in this paper was to say, what if all of the different chemicals themselves were considered a mixture, and what would be the total number of meals if we assumed that each of those chemicals was contributing to an adaptive toxicity³?” he says.

Fish advisories tell you how many meals of each kind of fish you can safely eat each week.

The team found that about half of the fish consumption advisories they studied in the Canadian waters of four of the Great Lakes are "potentially not adequately protective."

Drouillard says when they used the multiple chemical method in their study, about 50% of the advisories would need to recommend eating one fewer fish meal.

So should local governments consider changing how they do fish advisories?

Drouillard says it's complicated.

"One of the real challenges is trying to address risk-benefits of eating fish. And of course fish advisories all focus on the risks, but at the same time, we don't want to give the impression to the general public to completely avoid eating fish, because there are a lot of health benefits that accrue⁴ from that," he says.

He says generally speaking, fish in the Great Lakes region like yellow perch⁵, sunfish, and white crappie have the fewest contaminants. Moderately contaminated fish include largemouth and smallmouth bass⁶. He says fish like carp and channel catfish⁷ are more heavily contaminated (and to some extent, walleye).

Drouillard says officials should make fish consumption information more accessible: like posting advisories on signs in popular fishing spots.

"We see in some cases, for example, in Great Lakes Areas of Concern, we have Michigan and we have Ontario that are posting signs of allowable meals that local shoreline fishers, for example, they can see those advisories posted right in the same areas that they’re fishing," he says.

Drouillard says their research suggests some advisories could stand to be more conservative.

“But I also think it probably takes a little more research to validate⁸ whether our approach versus⁹ the single-contaminant approach is the most effective and protective measure,” he says.

1 advisories   

n.（有关进展、动向、建议等的）报告( advisory的名词复数 )；公告；通告；通报

参考例句：

• Compliance with Practice Advisories is optional. 是否遵守实务公告由审计师自行选择决定。 来自互联网
• Hardened-PHP: not as such a PHP security information website, but it does have security advisories. 增强PHP:不仅仅是一个PHP安全新的网站，它还提供安全建议。 来自互联网

2 ken   

n.视野，知识领域

参考例句：

• Such things are beyond my ken.我可不懂这些事。
• Abstract words are beyond the ken of children.抽象的言辞超出小孩所理解的范围.

3 toxicity   

n.毒性，毒力

参考例句：

• The hoarse grunt or squeal is characteristic of toxicity.嘶哑的哼声和叫声是中毒的特征。
• Dieldrin is related to aldrin,and its toxicity to earthworms is similar.狄氏剂与艾氏剂有关，对蚯蚓的毒性是相似的。

4 accrue   

v.(利息等)增大，增多

参考例句：

• Ability to think will accrue to you from good habits of study.思考能力将因良好的学习习惯而自然增强。
• Money deposited in banks will accrue to us with interest.钱存在银行，利息自生。

5 perch   

n.栖木，高位，杆；v.栖息，就位，位于

参考例句：

• The bird took its perch.鸟停歇在栖木上。
• Little birds perch themselves on the branches.小鸟儿栖歇在树枝上。

6 bass   

n.男低音(歌手)；低音乐器；低音大提琴

参考例句：

• He answered my question in a surprisingly deep bass.他用一种低得出奇的声音回答我的问题。
• The bass was to give a concert in the park.那位男低音歌唱家将在公园中举行音乐会。

7 catfish   

n.鲶鱼

参考例句：

• Huge catfish are skinned and dressed by hand.用手剥去巨鲇的皮并剖洗干净。
• We gigged for catfish off the pier.我们在码头以鱼叉叉鲶鱼。

8 validate   

vt.（法律）使有效，使生效

参考例句：

• You need an official signature to validate the order.你要有正式的签字，这张汇票才能生效。
• In order to validate the agreement,both parties sign it.为使协议有效，双方在上面签了字。

9 versus   

prep.以…为对手，对；与…相比之下

参考例句：

• The big match tonight is England versus Spain.今晚的大赛是英格兰对西班牙。
• The most exciting game was Harvard versus Yale.最富紧张刺激的球赛是哈佛队对耶鲁队。