Written by Joe Ballenger
Here’s a question I *really* like:
Indian meal moths and grain weevils get into stored grain products and manage to complete entire life cycles without any access to moisture. How do they manage that?
I really like agricultural pests, stored product pests in particular. They have super cool biology, and they’re really important. Between the farm and the table, 10-15% of the harvest can be lost to bugs which live inside stored products. If that wasn’t bad enough, these bugs can break grains and mess with the humidity inside storage facilities. This damage introduces fungus, which can reduce the value of the product by as much as half its worth. This fungus can also make people very sick, so they’re important to both agriculture and medicine.
If you think about the environment these bugs live in, it’s very extreme. They live their entire lives without seeing a drop of water, all while evading hyper-intelligent animals which are constantly looking for new ways to kill them. There’s life in the driest deserts in the world, but these animals live in an indifferent environment. While harsh, these desert animals do not live in a place which is actively trying to kill them. You could argue that these bugs are the ultimate extremophiles.
So how do these guys get water in such a harsh place?