Invasive species in Hawaii and health-related problems. The introduction of mosquitoes to Hawaii has resulted in the spread of avian malaria, and increases the risk of dengue and west Nile virus (not known to be in Hawaii yet). Other native species can be affected by invasive species diseases as well, such as the once-dominant koa tree being killed by koa wilt, which is believed to have been brought into Hawaii on an ornamental acacia plant, and the 'ohi'a tree, now being affected by Rapid Ohia Death. Invasive predators can severely reduce the population sizes of native species, or even drive them extinct, because native
KOA (AM) to his home state of Minnesota after the war. "The Sports Zoo" with Dave Logan and Scott Hastings ran for 12 years until Hastings left in April 2005 for the Altitude Sports and Entertainment network. Hastings resumed sports radio broadcasting on KKFN in January 2006 alongside former Denver Broncos lineman Alfred Williams. Ken Hamblin, "The Black Avenger," also hosted a popular and long-running show during the 1980s. Also in the 1980s, during the weekend evening hours on KOA, Larry Cox, and his dog Wilbur, would host the radio program, "The National Recovery Act", a listener-friendly call-in show. A certain topic