ZAPATA, Texas (AP) -

A South Texas oral surgeon has joined forces with Texas wildlife officials to try to spawn bigger largemouth bass.

The San Antonio Express-News reported Monday that Dr. Gary Schwarz has a 15-year contract with the Texas Parks and Wildlife Department.

The deal will allow the state to use the dentist's new private lake on his ranch near Zapata, about 45 miles southeast of Laredo, to combine fish genetics, environment and nutrition.

Forage ponds were possible thanks to Rio Grande irrigation rights that Schwarz bought along with the property.

The department's ShareLunker program encourages anglers to lend or donate any largemouth bass weighing more than 13 pounds to the state for spawning purposes. Operation World Record is a research project to evaluate selective breeding of the ShareLunker program.