Farscape: Season 1, Episode 7

1 - 7: Exodus from Genesis

Moya gets infested with bugs who have come on board to breed. They turn up the temperature to speed up the process but this causes Aeryn to get heat delirium as she is cold blooded. The bugs seem to be able to replicate members of the crew. And as if that isn't enough, a Peacekeeper ship shows up.