阅读机经求讨论！（共生问题的那篇）

llssyy93

Q3：问动物抓别的动物背着这种行为会对自己产生什么后果，A:it will bemoresubject to predation. E: it will not move as quickly as it could.主要就是这两个中间一个。

应该选哪一个啊？



The nature of thisrelationship is puzzling. It isdifficult to discern how carrying anotherorganism around
can be advantageous.We speculated that in fact, amphipods mustbe considerably slowed down.
Bycarefully measuring the swimming speeds ofamphipods with and without seabutterflies, we found that
amphipods carrying seabutterflies moved only halfas quickly as similarly sized solitary amphipods.
The situation simply made nosense. In reducing their mobility, the amphipodsbecame more vulnerable to
predators and less adept at capturing prey.
Why, then,would amphipods go outof their way to abduct and carry sea butterflies?


The nature of thisrelationship is puzzling. It isdifficult to discern how carrying anotherorganism around
can be advantageous.We speculated that in fact, amphipods mustbe considerably slowed down.
Bycarefully measuring the swimming speeds ofamphipods with and without seabutterflies, we found that
amphipods carrying seabutterflies moved only halfas quickly as similarly sized solitary amphipods.
The situation simply made nosense. In reducing their mobility, the amphipodsbecame more vulnerable to
predators and less adept at capturing prey.
Why, then,would amphipods go outof their way to abduct and carry sea butterflies?

isalee

第二个吧。。。。=。=

llssyy93

自己顶起！我也觉得是第二个= =