Young colonies, wild saplings, explosive responses

So far, I've been focusing on medium-aged colonies in medium-sized tree for standardization reasons. In a recent experiment conducted with Karla Moeller, we expanded our sampling to include young saplings and old giants. Here's a sneak peak at how one of our sapling colonies responded to leaf damage. Note that as the ant that discovered the damage returns to the stem to rally her nestmates, she is dragging her abdomen, laying a guiding chemical trail.