How the mechanics of the selection went:

Out of the 20 cast members, 9 stated they were straight, 9 stated they were gay, and 2 said they were bisexual. The 2 bisexuals were made team captains as they could go either way. Jaburu was the gay tribe, Tambaqui was the straight tribe. The 2 team captains, apart from choosing their tribe name, also unwittingly picked their own sides.