Gov. Janet Napolitano has permanently reinstated the Arizona Invasive Species Advisory Council, a group that addresses threats from non-native species such as the roof rat, the yellow star thistle and the recently discovered quagga mussel... the quagga mussel, which has caused extensive damage in the upper Midwest, was found in Lake Mead, Lake Havasu and Lake Mohave along the Colorado River... the Game and Fish Department announced that an invasive fish thought to have been eradicated in Arizona, the bighead carp, has been found in Tucson's Lake Kennedy. It grows quite large and can damage ecosystems. The department also said...