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Olfactory Discriminating Ability of Lacustrine Sockeye and Masu Salmon in Various Freshwaters

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Title: Olfactory Discriminating Ability of Lacustrine Sockeye and Masu Salmon in Various Freshwaters
Authors: Sato, Koji Browse this author
Shoji, Takayuki Browse this author
Ueda, Hiroshi Browse this author →KAKEN DB
Issue Date: Apr-2000
Publisher: 日本動物学会
Journal Title: Zoological Science
Volume: 17
Issue: 3
Start Page: 313
End Page: 317
Abstract: In order to study the olfactory discriminating ability of lacustrine sockeye salmon (Oncorhynchus nerka) and masu salmon (O. masou), the integrated olfactory nerve response to various freshwaters was recorded by electrophysiological techniques. In both species independent of sex and gonadal maturity, each freshwater caused a different olfactory response. Source and effluent waters of the culture pond at Toya Lake Station (the source and culture pond waters) evoked the minimum and maximum response magnitude, respectively. In cross-adaptation experiments, the culture pond water abolished all secondary responses to other freshwaters, and no freshwater abolished the secondary response to the culture pond water. The concentration response study revealed that the minimum concentration (threshold) to induce response to the culture pond water after adaptation to Lake Toya water was between 0.1 and 1.0%. The present study indicates that the olfactory organ of lacustrine salmonids may discriminate different intensities of various freshwater odors.
Rights: (c) 日本動物学会 / 本文献の公開は著者の意思に基づくものである
Type: article
Appears in Collections:北方生物圏フィールド科学センター (Field Science Center for Northern Biosphere) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 上田 宏

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