Download or read book Catalogue of the Tiger Beetles of Canada and the United States written by Richard Freitag and published by NRC Research Press. This book was released on 1999 with total page 210 pages. Available in PDF, EPUB and Kindle. Book excerpt: Annotation Since the 1960s, American and Canadian fisheries have been introducing salmonines such as rainbow trout and chinook and coho salmon to the Great Lakes in order to develop new recreational fisheries. In this study, Crawford (ichthyology, U. of Guelph) examines the effects of non-native fish populations on the Great Lakes ecosystem. He contends that the ongoing introduction of non-native salmonines poses an ecologically- significant risk and that the practice should be terminated. The volume is not indexed. Annotation copyrighted by Book News Inc., Portland, OR.