Tidal gradients, fine-scale homing and a potential cryptic ecotype of wild spawning pink salmon (Oncorhynchus gorbuscha)

The homing behaviour of salmon is a remarkable natural phenomenon, critical for shaping the ecology and evolution of populations yet the spatial scale at which it occurs is poorly understood. This study investigated the spatial scale and mechanisms driving homing as depicted by spawning site-choice...

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Bibliographic Details
Published in:Molecular ecology 2023-11, Vol.32 (21), p.5838-5848
Main Authors: May, Samuel A, Shedd, Kyle R, Rand, Peter S, Westley, Peter A H
Format: Article
Language:English
Subjects:
Alaska
Animals
Dispersal
Ecology
Ecotype
Fish hatcheries
Fish populations
Fresh water
Freshwater environments
Gene flow
Hatcheries
Homing
Homing Behavior
Humans
Inbreeding
Oncorhynchus gorbuscha
Population genetics
Populations
Salmon
Salmon - genetics
Site fidelity
Spawning
Spawning behavior
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Summary:The homing behaviour of salmon is a remarkable natural phenomenon, critical for shaping the ecology and evolution of populations yet the spatial scale at which it occurs is poorly understood. This study investigated the spatial scale and mechanisms driving homing as depicted by spawning site-choice behaviour in pink salmon (Oncorhynchus gorbuscha) in Prince William Sound, Alaska. Molecular pedigree analyses of over 30,000 adult spawners in four streams revealed that pink salmon exhibit fine-scale site fidelity within a stream, returning to within
ISSN:0962-1083
1365-294X
1365-294X
DOI:10.1111/mec.17154