Pay-TV channel Starz plans to delay the availability of new TV shows and movies to Netflix Inc., adding to the list of media companies that have signaled plans to keep new content away from the growing online-video giant.

Starz, owned by Liberty Media Corp., said that beginning April 1, that new episodes of its original shows, like the forthcoming "Camelot," will be delayed 90 days before being available on Netflix and a handful of other Internet services to which it licenses content. Starz added that exclusive first-run movies on the channel will "later follow suit."

The shift comes as Netflix is generating increased anxiety in the entertainment business for its growing heft. Some networks and cable operators fear Netflix, with 20 million subscribers, could siphon away their customers, particularly with its new video streaming service.. Others worry that giving it new programs will cut into TV advertising, or undermine a lucrative ecosystem of selling TV shows into reruns.

Netflix's recent deal for first-run rights to an original television series by Oscar-nominated director David Fincher did nothing to diminish those fears.

CBS Corp.'s Showtime said this week that a new deal with Netflix will no longer include access to some of its current shows, affecting series such as "Dexter" and "Californication." Time Warner Inc.'s HBO makes none of its content available on Netflix.