Chemosensory sensitivity of some salmonid and acipenserid fish to natural attractants

Family, species	Thresholds of chemosensory sensitivity: given in parts of standard exctract 1 gram food per l water
Acipenseridae stellate sturgeon, Acipenser stellatus Siberian sturgeon, Acipenser baeri	bloodworm extracts 10-4 (Kasumyan & Kazhlaev, 1993)
Salmonidae sockeye, Oncorhynchus nerka	brine shrimp, zooplankton extracts 10-5 beef liver, beef heart extracts 10-3 — 10-2 (McBride et al., 1962)
Salmonidae Atlantic salmon, Salmo salar, rainbow trout, Salmo gairdneri, brook trout, Salmo trutta	Trichoptera larva extracts 10-3 (Marusov, 1975)

Salmo trutta, by Harald Seide

Basic References

Kasumyan A.O., Kazhlaev A.A. 1993. Formation of searching behavioral reaction and olfactory sensitivity to food chemical signals during ontogeny of sturgeons (Acipenseridae). Journal of Ichthyology 33, 51-65

Marusov E.A. 1975. The reaction of young salmonids to some natural chemical stimuli. Journal of Ichthyology 15, 375-377

McBride J.R., Idler D.R., Jonas R.E.E., Tomlinson N. 1962. Olfactory perception in juvenile salmon. I. Observations on response of juvenile sockeye to extracts of foods. Journal of the Fisheries Research Board of Canada 19, 327-334