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Micro-elemental analysis of statoliths as a tool for tracking tributary origins of sea lamprey

The analysis of otolith micro-elemental composition has been a   valuable tool for differentiating among local spawning populations,   and identifying origins of recruits to the fishery. Herein, we   explored whether the analysis of sea lamprey (Petromyzon marinus)   statolith micro-elemental composition by laser-ablation inductively-  coupled plasma-mass spectrometry (LA-ICP-MS) could be used as a tool   to:  1) discriminate among sea lamprey larvae collected from Lake Huron   tributaries, and   2) classify a mixed-sample of unknown-origin parasites or spawners   back to their natal source.     By providing the GLFC with an alternate means, to labor-intensive   tagging studies, to determine relative contributions of parasites   and spawners from various spawning tributaries, we sought to enhance   the GLFC's ability to prioritize sea lamprey control efforts. As   part of this effort, we analyzed statoliths of larvae collected in   45 Lake Huron tributaries during 2  4 and 2  5, as well as 72 female   spawners collected in the Thessalon and Opequeoc rivers during 2  5.   Our analyses were conducted at three different classification   scales: by geologic zone (n = 4 zones), by watershed (n = 9   watersheds), and by individual stream (n = 45 streams). Similar to a   previous GLFC pilot study conducted using Proton Induced X-ray   Emission (PIXE), we found that LA-ICP-MS analysis of statolith micro-  elemental composition could be used to reliably differentiate among   individuals produced in different regions (i.e., geologic zones,   watersheds, streams), with the level of successful discrimination   varying with classification scale.     (sea lamprey); (sea lampreys); (Petromyzon marinus); (AIS); (aquatic   invasive species); (ANS); (aquatic nuisance species); (Lake Huron);   (statoliths); (statolith); (plasma-mass spectrometry); (mass   spectometry)

In progress
Start Date
End Date
Scope of Study
Field Investigation
Scale of Phenomena
Impact of Pollutants
Exotic Species
Lake Basin Connecting Channels
Lake Huron
Control And Mitigation
Integrated Control Strategy
Prevention and Introduction
Definition of Vectors of Introduction
Spread of Established ANS Populations
Mechanisms of Spread
Annex Numbers
Research & Development
Annex 17
Impact of water quality and AIS on fish and wildlife populations and habitats
Aquatic Nuisance Species
  • Annex Numbers
    Annex Numbers
    Research & Development
  • Annex 17
    Annex 17
    Impact of water quality and AIS on fish and wildlife populations and habitats

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