title: The behavioural homing response of adult chum salmon Oncorhynchus keta to amino-acid profiles.
abstract: Adult chum salmon Oncorhynchus keta homing behaviour in a two-choice test tank (Y-maze) was monitored using a passive integrated transponder (PIT)-tag system in response to river-specific dissolved free amino-acid (DFAA) profiles and revealed that the majority of O. keta showed a preference for artificial natal-stream water and tended to stay in this maze arm for a longer period; natal-stream water was chosen over a nearby tributary's water, but not when the O. keta were presented with a non-tributary water. The results demonstrate the ability of O. keta to discriminate artificial stream waters containing natural levels of DFAA.
authors.affiliation: Division of Biosphere Science, Graduate School of Environmental Science, Hokkaido University, Sapporo, 060-0810, Japan.
authors.forename: E Y
authors.initials: EY
authors.lastname: Chen
authors.affiliation: Biology Department, Northern Michigan University, Marquette, MI, 49855, U.S.A.
authors.forename: J B K
authors.initials: JBK
authors.lastname: Leonard
authors.affiliation: Division of Biosphere Science, Graduate School of Environmental Science, Hokkaido University, Sapporo, 060-0810, Japan.|Laboratory of Aquatic Bioresources and Ecosystems, Field Science Center for the Northern Biosphere, Hokkaido University, Sapporo, 060-0809, Japan.
authors.forename: H
authors.initials: H
authors.lastname: Ueda
mesh_terms: D000596:Amino Acids / Q000737:chemistry / Q000494:pharmacology*; D000818:Animals; D006702:Homing Behavior / Q000187:drug effects*; D017685:Oncorhynchus keta / Q000502:physiology*; D045483:Rivers / Q000737:chemistry*
chemical_list: D000596:Amino Acids
keywords: PIT tag; Y-maze; artificial stream waters; dissolved free amino acids; homing behaviour