David Lord of Thackaringa station near Broken Hill says he is concerned that the calicivirus is losing its impact in controlling rabbit populations.

Mr Lord is calling for a complete stocktake of what is going on with rabbits and control methods.

"General talk around the bush [is] that rabbit numbers increased over the last six months," he said.

"Definitely need some finance to support a scientific team to get a good handle on RHD so we know whether any resistance is developing.

Source: abc.net.au