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- Does sexual selection in cichlids resultin reproductive isolation?How atmosphere and ocean interaction influence fish abundance?What is the number and types of lamprey species that are present in the Great lakes? which lampreys are native and which are invasive to the Great Lakes? which lampreys are parasitic and which are not in the Great Lakes? what do non-parasitic lampreys do? What is the life cycle of sea lampreys, and the various control methods for lampreys intersect with this life cycle?