And indeed, they found eight species of nematodes living there!

他们确实在那里发现了8种线虫！

Consider the nematode roundworm, the most abundant of all animals.

再看看线虫，它们是所有动物家族当中最为繁盛的。

Nematodes, of course, are much smaller than sandworms.

当然，线虫的体型比沙虫要小得多。

" Most nematodes, you can just barely see."

“大多数线虫几乎无法用肉眼看见。”

The team studied the mechanism of action in various species such as silkworms, nematodes, and fruit flies.

研究团队研究了在蚕、线虫和果等多种物种中的作用机制。

Nematodes, little soil-dwelling worms found on and off of every continent on Earth, are Dr. Bick's specialty.

线虫，生活在每个大陆上或周围的土壤中的小型蠕虫，是比克博士的专业研究对象。

Nematodes, little soil-dwelling worms found on and off of every continent on Earth, are Dr. Bik's specialty.

线虫，生活在地球上每个大陆上的小土壤蠕虫，是比克博士的专长。

For every single human on this planet, there exist 57 billion nematodes.

对于这个星球上的每个来，有 570 条线虫。

Others may look familiar, but be stranger still, like nematodes.

其他可能看起来很熟悉，但仍然很陌生，就像线虫一样。

This means pacificus nematodes actually are cannibals--they eat nematodes of their own species, but avoid their close relatives.

这意味着太平洋线虫实际上是食者——它们吃同类的线虫，但避开它们的近亲。

Not a snake nor an earthworm, nematodes are a creature all of their own.

不是蛇也不是蚯蚓，线虫是一种完全属于它们自己的生物。

" They look like nematodes. You know, anything in the popular culture that has a relationship to worms, we follow."

“它们看起来很像线虫。流行文化中与蠕虫有关的任何东西，我们都会研究。”

Researchers wanted to know how these nematodes avoid feasting on their family.

研究员想知道这些线虫是如何避免以家为食的。

Their charges are susceptible to intestinal nematode worms which cause them to waste away and can, in severe cases, kill them.

他们的羊群容易受到肠道线虫的影响，这些蠕虫会使它们日渐消瘦，在严重的情况下，会令它们死亡。

And indeed: they found eight species of nematodes living there!

事实上：他们发现那里生活着八种线虫！

It would be really interesting if we could get the nematodes to photosynthesize.

如果我们能让线虫进行光合作用，那将非常有趣。

So now we've got C. elegans the pupfish, C. elegans the tarantula, C. elegans the nematode, and C. elegans the turtle.

因此，现在我们 C. elegans 鳉鱼，C. elegans 狼蛛，C. elegans 线虫和 C. elegans 甲鱼。

How do the nematodes do it?

线虫是怎么做到的？

They discovered that down-regulating the expression of 7 genes significantly shortened the lifespan of nematodes, while down-regulating 3 genes extended their lifespan.

他们发现下调 7 个基因的表达显著缩短了线虫的寿命，而下调 3 个基因则延长了它们的寿命。

Most of us don't really take nematode worms into consideration or think that they have any kind of ethical rights.

我们大多数并没有真正考虑线虫，也不认为它们拥有任何道德权利。