caa a22 4500 606226710 CHVBK 20210128101154.0 cr unu---uuuuu 210128e20150101xx s 000 0 eng 10.1007/s10641-014-0247-6 doi (NATIONALLICENCE)springer-10.1007/s10641-014-0247-6 New insight into the spawning behavior of lake trout, Salvelinus namaycush , from a recovering population in the Laurentian Great Lakes [Elektronische Daten] [T. Binder, H. Thompson, A. Muir, S. Riley, J. Marsden, C. Bronte, C. Krueger] Spawning behavior of lake trout, Salvelinus namaycush, is poorly understood, relative to stream-dwelling salmonines. Underwater video records of spawning in a recovering population from the Drummond Island Refuge (Lake Huron) represent the first reported direct observations of lake trout spawning in the Laurentian Great Lakes. These observations provide new insight into lake trout spawning behavior and expand the current conceptual model. Lake trout spawning consisted of at least four distinct behaviors: hovering, traveling, sinking, and gamete release. Hovering is a new courtship behavior that has not been previously described. The apparent concentration of hovering near the margin of the spawning grounds suggests that courtship and mate selection might be isolated from the spawning act (i.e., traveling, sinking, and gamete release). Moreover, we interpret jockeying for position displayed by males during traveling as a unique form of male-male competition that likely evolved in concert with the switch from redd-building to itinerant spawning in lake trout. Unlike previous models, which suggested that intra-sexual competition and mate selection do not occur in lake trout, our model includes both and is therefore consistent with evolutionary theory, given that the sex ratio on spawning grounds is skewed heavily towards males. The model presented in this paper is intended as a working hypothesis, and further revision may become necessary as we gain a more complete understanding of lake trout spawning behavior. Springer Science+Business Media Dordrecht, 2014 Reproductive ecology nationallicence Itinerant spawning nationallicence Courtship nationallicence Male-male competition nationallicence Binder T. Great Lakes Fishery Commission and Michigan State University, Hammond Bay Biological Station, 11188 Ray Rd., 49759, Millersburg, MI, USA aut Thompson H. United States Geological Survey, Hammond Bay Biological Station, 11188 Ray Rd., 49759, Millersburg, MI, USA aut Muir A. Great Lakes Fishery Commission, 2100 Commonwealth Blvd. Suite 100, 48105, Ann Arbor, MI, USA aut Riley S. Great Lakes Science Center, United States Geological Survey, 1451 Green Rd., 48105, Ann Arbor, MI, USA aut Marsden J. The Rubenstein School of Environment and Resources, University of Vermont, 308D Aiken Center, 05405, Burlington, VT, USA aut Bronte C. United States Fish and Wildlife Service, 2661 Scott Tower Drive, 54229, New Franklin, WI, USA aut Krueger C. Great Lakes Fishery Commission, 2100 Commonwealth Blvd. Suite 100, 48105, Ann Arbor, MI, USA aut Environmental Biology of Fishes Springer Netherlands 98/1(2015-01-01), 173-181 0378-1909 98:1<173 2015 98 10641 https://doi.org/10.1007/s10641-014-0247-6 text/html Onlinezugriff via DOI BK010053 XK010053 XK010000 Metadata rights reserved Springer special CC-BY-NC licence nationallicence 1 research-article jats NATIONALLICENCE NATIONALLICENCE NL-springer NATIONALLICENCE 856 40 https://doi.org/10.1007/s10641-014-0247-6 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Binder T. Great Lakes Fishery Commission and Michigan State University, Hammond Bay Biological Station, 11188 Ray Rd., 49759, Millersburg, MI, USA aut NATIONALLICENCE 700 1- Thompson H. United States Geological Survey, Hammond Bay Biological Station, 11188 Ray Rd., 49759, Millersburg, MI, USA aut NATIONALLICENCE 700 1- Muir A. Great Lakes Fishery Commission, 2100 Commonwealth Blvd. Suite 100, 48105, Ann Arbor, MI, USA aut NATIONALLICENCE 700 1- Riley S. Great Lakes Science Center, United States Geological Survey, 1451 Green Rd., 48105, Ann Arbor, MI, USA aut NATIONALLICENCE 700 1- Marsden J. The Rubenstein School of Environment and Resources, University of Vermont, 308D Aiken Center, 05405, Burlington, VT, USA aut NATIONALLICENCE 700 1- Bronte C. United States Fish and Wildlife Service, 2661 Scott Tower Drive, 54229, New Franklin, WI, USA aut NATIONALLICENCE 700 1- Krueger C. Great Lakes Fishery Commission, 2100 Commonwealth Blvd. Suite 100, 48105, Ann Arbor, MI, USA aut NATIONALLICENCE 773 0- Environmental Biology of Fishes Springer Netherlands 98/1(2015-01-01), 173-181 0378-1909 98:1<173 2015 98 10641