User blog comment:Lord Loss/Monster Hunter Theory... Blog/@comment-5043481-20130330104457/@comment-5020152-20130402123138

Hmmm... Maybe the slime mould scatters into tiny invisible spores when it explodes? So that way it can spread and breed. Then when it settles on the ground, other Brachydios can pick it up somehow and use it.

I'm just assuming it gets the mould from somewhere, because I doubt the mould is actually a part of it.