title: Chemosensory cues attract lake trout Salvelinus namaycush and an egg predator to the spawning substratum.
abstract: A field experiment was conducted to determine whether chemosensory cues emanating from lake trout Salvelinus namaycush spawning substratum attract breeding S. namaycush. Substrata from either a spawning site or a control site were randomly placed in trap nets around an isolated spawning shoal; those containing spawning substratum caught significantly more S. namaycush, as well as a greater proportion in breeding condition. White sucker Catostomus commersoni were a major predator of S. namaycush eggs and were also captured in greater numbers in nets with spawning substratum.
authors.affiliation: Department of Biology, Lakehead University, 955 Oliver Road, Thunder Bay, ON, P7B 5E1, Canada.
authors.forename: B A
authors.initials: BA
authors.lastname: Wasylenko
authors.forename: P J
authors.initials: PJ
authors.lastname: Blanchfield
authors.forename: G G
authors.initials: GG
authors.lastname: Pyle
mesh_terms: D000818:Animals; D001070:Appetitive Behavior / Q000502:physiology*; D003463:Cues; D003531:Cypriniformes / Q000502:physiology*; D005260:Female; D008297:Male; D010063:Ovum; D012726:Sexual Behavior, Animal / Q000502:physiology*; D014337:Trout / Q000502:physiology*