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Evidence Of Sound Production By Spawning Lake Trout (Salvelinus Namaycush) In Lakes Huron And Champlain, Nicholas S. Johnson, Dennis M. Higgs, Thomas R. Binder, Ellen J. Marsden, Tyler J. Buchinger, Steven Farha, Charles C. Krueger

Biological Sciences Publications

Two sounds associated with spawning lake trout (Salvelinus namaycush) in lakes Huron and Champlain were characterized by comparing sound recordings with behavioral data collected using acoustic telemetry and video. These sounds were named “growls” and “snaps” and were heard on lake trout spawning reefs, but not on a nonspawning reef, and were more common at night than during the day. Growls also occurred more often during the spawning period than the prespawning period, while the trend for snaps was reversed. In a laboratory flume, sounds occurred when male lake trout were displaying spawning behaviors: growls when males were …