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Chemosensory cues attract lake trout Salvelinus namaycush and an egg predator to the spawning substratum
Author(s) -
Wasylenko B. A.,
Blanchfield P. J.,
Pyle G. G.
Publication year - 2013
Publication title -
journal of fish biology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.672
H-Index - 115
eISSN - 1095-8649
pISSN - 0022-1112
DOI - 10.1111/jfb.12048
Subject(s) - salvelinus , trout , biology , catostomus , fontinalis , shoal , sucker , predator , fishery , ecology , zoology , predation , fish <actinopterygii> , oceanography , geology
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.