活久见!毛毛虫吃毛毛虫来对抗传染病

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毛毛虫吃同类是很有营养的,因为它们含有体内的所有营养元素,真的是这样吗?

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Ben Van Allen liked to collect caterpillars(毛毛虫) when he was young. While doing postdoctoral research at Louisiana State University, Van Allen saw that some of the caterpillars were having others for lunch. Rather than cry over his losses, Van Allen took advantage of the cannibalism for his research.
"Generally speaking, it's nutritious to eat the same species, because they have all the nutrients that are already inside you, so it's an easy-to-process meal. It also reduces the amount of competition you are going to experience. It's just one fewer individual trying to eat the same food you are, in the same area. And it's usually easy to find members of the same species too, since they live in the same place you do." Van Allen and his colleagues collected the caterpillars to study disease transmission(传播) in lepidoptera(鳞翅类物种)—moths and butterflies.
After observing the cannibalism, they wondered if their subjects' appetite for each other might be dangerous for the individual. if it eats an infected cousin which benefits the group, it removes the infected individual from the group. "Our main point is that it is an individually risky thing for a caterpillar; however, for groups, the cannibalism actually prevent diseases from getting into the group in the first place." Van Allen's study is in the journal American Naturalist.
本时文内容由奇速英语国际教育研究院原创编写,未经书面授权,禁止复制和任何商业用途,版权所有,侵权必究!(投稿及合作联系:028-84400718  QQ:757722345)

1. What’s the Chinese meaning of the underlined word “cannibalism”?

A    同类相食.

B    共享午餐.

C    糖果理论.

D    蜡烛理论.

  • A
  • B
  • C
  • D

2. It's _____ to eat the same species.

A    happy

B    nutritious

C    interesting

D    impossible

  • A
  • B
  • C
  • D

3. Why did Van Allen and his colleagues collect the caterpillars?

A    They wanted to study their daily life.

B    They wanted to study their lunch.

C    They wanted to study their eating habits.

D    They wanted to study disease transmission.

  • A
  • B
  • C
  • D

4. What does cannibalism actually prevent from getting into the group?

A    Butterflies.

B    Disease.

C    Animals.

D    Birds.

  • A
  • B
  • C
  • D

5. Where can we read the passage?

A    In an advertisement.

B    In a science fiction.

C    In a fairy tale.

D    In a journal.

  • A
  • B
  • C
  • D
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