Olfactory Sensitivity during Parr and Smolt Developmental Stages of Coho Salmon
- 1 September 1985
- journal article
- research article
- Published by Oxford University Press (OUP) in Transactions of the American Fisheries Society
- Vol. 114 (5) , 732-736
- https://doi.org/10.1577/1548-8659(1985)114<732:osdpas>2.0.co;2
Abstract
The avoidance response of juvenile coho salmon Oncorhynchus kisutch to L-serine and D,L-alanine was measured in a two-choice Y-trough. Threshold concentration for olfactory detection and avoidance of L-serine was 10-8 M for zero-age parr, 10-7 M for yearling parr, 10-5 M for smolts in late April-early May, and 10-6 M for smolts in June. Threshold for the avoidance of D,L-alanine was 10-7 M for yearling parr, 10-6 M for smolts in late April-early May, and 10-5 M for smolts in June. These data suggest that (1) heightened olfactory sensitivity may not occur during smoltification or (2) smolts may be less disposed than parr to show avoidance behavior.This publication has 0 references indexed in Scilit: