The authors studied the sea spider Pycnogonum litorale. They stripped parts of the body of 23 adult and young spiders. For some, only the anal tubercle was cut, for others, even the bases of the hind limbs or several trunk segments were cut off.
Of the 20 surviving sea spiders, 16 were young. After amputation, they molted and restored lost body parts. But older spiders couldn’t do that.
Source: Ferra
