Are there male prostitutes for women in the NV brothels?

Not sure. Somehow I doubt it.
Most male prostitutes for women are arranged very discreetly, outside of an establishment. Most work on their own, without a manager.

There could be, if you want to find one, think like one.

There are no male prostitutes in legal brothels.

Most (99%) of the male escorts in Nevada are gay, but you might be able to find a few straight male escorts out there. There is not much of a market for straight males. Just do a search on the Internet, like "straight male escorts in Reno" as an example.