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Otolith microchemistry and acoustic telemetry reveal anadromy in non-native rainbow trout (Oncorhynchus mykiss) in Prince Edward Island, Canada
- Source :
- Canadian Journal of Fisheries and Aquatic Sciences. July, 2020, Vol. 77 Issue 7, p1117, 14 p.
- Publication Year :
- 2020
-
Abstract
- 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 ( L'etude se penche sur les habitudes migratoires de truites arc-en-ciel (Oncorhynchus mykiss) introduites dans trois rivieres de llle-du-Prmce-Edouard (Canada) en utilisant la telemetrie acoustique et la microchimie des otolites. Seuls 6 % des poissons dotes d'etiquettes acoustiques dans les trois reseaux hydrographiques ont quitte les echancrures cotieres. Une cohorte de truites arc-en-ciel dans chacune des trois rivieres est entree en eaux salees. L'utilisation de l'habitat variait entre les migrants des trois rivieres, les poissons de la riviere Montague occupant un habitat estuarien (20,79 USP en moyenne) plus souvent que les poissons des rivieres West et Dunk, qui avaient tendance a occuper des habitats fluviaux tidaux (1,27 et 4,29 USP en moyenne, respectivement) et d'eau douce (<br />Introduction Rainbow trout (Oncorhynchus mykiss) have been introduced to over 90 countries (MacCrimmon 1971; Crawford and Muir 2008), as the species is a valued recreational angling target. However, their impacts [...]
- Subjects :
- Estuaries
Fishes
Trout
Earth sciences
Subjects
Details
- Language :
- English
- ISSN :
- 0706652X
- Volume :
- 77
- Issue :
- 7
- Database :
- Gale General OneFile
- Journal :
- Canadian Journal of Fisheries and Aquatic Sciences
- Publication Type :
- Academic Journal
- Accession number :
- edsgcl.627791814
- Full Text :
- https://doi.org/10.1139/cjfas-2019-0229