Montana is wrestling with the best way to manage Chronic Wasting Disease among deer, elk and moose. One wildlife specialist maintains preserving predators is the answer. Under its current plan, the Montana Department of Fish, Wildlife and Parks has set up survey hunts of deer to determine where hotbeds of CWD are located. The state's second survey hunt in north central Montana began last weekend, and lasts through Feb. 15. But Norman Bishop, a retired wolf interpreter at Yellowstone National Park who has studied wolves for decades, says protecting predators could be a better solution for eliminating the neurological disease."Not just wolves but also, mountain lions have been shown to be pretty effective at selecting and taking prey that's disadvantaged or disabled, and that includes those with CWD," he points out.Bishop says a number of studies confirm that wolves and mountain lions are able to detect diseased prey, even animals that aren't visibly sick to humans. He says the steep decline in predators likely is one reason CWD is taking hold in the region.