Otolith microchemistry and acoustic telemetry reveal anadromy in non-native rainbow trout (Oncorhynchus mykiss) in Prince Edward Island, Canada

This study examined the migratory patterns of introduced rainbow trout (Oncorhynchus mykiss) in three rivers in Prince Edward Island, Canada, using acoustic telemetry and otolith microchemistry. Only 6% of acoustically tagged fish in three river systems left coastal embayments. A cohort of rainbow t...

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Bibliographic Details
Published in:Canadian journal of fisheries and aquatic sciences 2020-07, Vol.77 (7), p.1117-1130
Main Authors: Roloson, Scott D, Landsman, Sean J, Tana, Raymond, Hicks, Brendan J, Carr, Jon W, Whoriskey, Fred, van den Heuvel, Michael R
Format: Article
Language:English
Subjects:
Acoustic telemetry
Anadromous migrations
Anadromy
Aquatic habitats
Bays
Biological sampling
Case studies
Estuaries
Fish
Fishes
Fresh water
Freshwater
Freshwater environments
Habitat utilization
Habitats
Introduced species
Life history
Microchemistry
Migrations
Offspring
Oncorhynchus mykiss
Otolith reading
Otoliths
River systems
Rivers
Salmon
Summer
Tagging
Telemetry
Trout
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Summary:This study examined the migratory patterns of introduced rainbow trout (Oncorhynchus mykiss) in three rivers in Prince Edward Island, Canada, using acoustic telemetry and otolith microchemistry. Only 6% of acoustically tagged fish in three river systems left coastal embayments. A cohort of rainbow trout in all three rivers entered saline waters. Habitat use differed among migrants in the three rivers, as Montague River fish occupied estuary habitat (mean 20.79 PSU) more often than West River and Dunk River fish that tended to occupy both riverine tidal (mean 1.27 and 4.29 PSU, respectively) and freshwater habitats (
ISSN:0706-652X
1205-7533
DOI:10.1139/cjfas-2019-0229