The Role of the Champlain Canal and Erie Canal as Putative Corridors for Colonization of Lake Champlain and Lake Ontario by Sea Lampreys

摘要: AbstractThe origin of populations the landlocked Sea Lamprey Petromyzon marinus in Lakes Champlain and Ontario, whether by artificial canals or natural colonization following last ice age, is controversial, part because related history ecology had been poorly documented. This situation favored a native classification for both lakes based mainly on genetics. A Lake population was predicated either two erroneous dates first record, 1841 1894, whereas correct date, 1929, much more recent strongly supports nonnative classification. The detection occurred shortly after opening 1916 Barge Canal, which opened upper Hudson River to fish passage. case Ontario did not account watershed breach 1863 between Susquehanna River, where common, drainage. Shortly ...