Country-music star Trisha Yearwood has become the latest performer to cancel a show at the Florida marine park SeaWorld Orlando in the wake of the documentary "Blackfish," about the captivity of its orca attraction Tilikum.

"In light of recent concerns, Trisha has decided to remove the Feb. 22 date from her upcoming tour plans," a rep for the singer told Change.org, where a petition by Stephanie Wireman, a Yearwood fan from Lexington, Ky., collected more than 5,600 signatures.

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Singer Willie Nelson and the bands Cheap Trick, Heart and Barenaked Ladies have all pulled out of concerts there since late November. The critically well-received "Blackfish" opened theatrically in July and aired on CNN in November.

Yearwood, 49, was scheduled to perform as part of the "Bands, Brew & BBQ" series of weekend concerts from Feb. 1 to March 9.

"We expect that other artists will be targeted in this campaign," SeaWorld spokesman Nick Gollattscheck told CNN after Cheap Trick canceled Wednesday.