One of the colonized planets in my empire has the Alien Pets resource. Unfortunately, despite having the "Respect Tile Resources" button checked, when I put that system under sector control, the sector builds over it (Possibly because the tile also has 6 Society, so it builds a Science Lab). And I would really like to have that resource, because a functioning Xeno Zoo would really help pacify the angry planet of xenophobic isolationists I recently conquered.
Building anything over that tile (even a Xeno Zoo that uses the resource) suppresses the collection of Alien pets. So how can I prevent a sector from suppressing the collection of rare resources like Alien Pets? I already have a number of planets that I don't want to place under sector control due to their strategic importance, and this sector puts me over my limit.