SALINA - Zebra mussels, small clams that crowd out other life forms and damage pipes, have been found in Lake Wilson. Jason Goeckler, a specialist in aquatic nuisance species with the Kansas Department of Wildlife and Parks, says the finding is troubling because it means the mussels are now in the Saline River and threaten other lakes downstream. Zebra mussels generally move between bodies of water attached to the hulls of boats, but fertilized eggs might be carried in bait buckets. Tommie Berger, fisheries biologist at Wilson Lake, says the zebra mussels were discovered in Wilson Lake Oct. 6. They have now been found in seven state lakes.