RATIONALE: This project is based on the premise that the similarity in swimming style between eels and lampreys means that the highly effective eel ladder-trap, specifically the 'Eel ladder' cylinder substrate used as the ladder (developed by Milieu Inc., President, D. Desrochers), should be equally effective at trapping lampreys. We lab-tested this premise last summer and found that lampreys would swim up a 45° ramp with a smooth and wetted surface by using lateral compression against closely spaced cylinders and would ascend with less effort and go substantially farther up the ramp than they would in the absence of the cylinders. We now propose a series of trials in the field designed to optimize the performance of the lamprey 'ladder trap' using a step-wise process described below: 1. Design and build a lamprey 'ladder-trap' prototype. The design will draw on expertise developed in providing upstream passage of eels over hydroelectric dams on the St Lawrence River and its tributaries. The key feature of the ladder-trap is the 'eel ladder' substrate, a series of closely packed cylinders which eels use to propel themselves up the ramp. 2. Evaluate performance of prototype. This evaluation will address the following questions: Are there obvious flaws that need to be corrected before any further testing? If not, is the response of lampreys to the prototype reproducible over successive trials? If so, is the trapping performance of the prototype optimal? The standard we will use for optimality is uninterrupted transits up the ramp and at least 9 % capture in the trap within a six hour observation period. 3. Modify prototype and re-test. This objective assumes that the optimality standard (above) has not been met. RELEVANCE TO PROGRAM: This proposal falls under the 'Barrier and Trapping' research theme area - Great Lakes Fishery Commission. Specifically, it proposes research that, if successful, will lead to a new lamprey trap design that is selective for lamprey (i.e. little or no impact on non-target species) and potentially 1 % effective at retention. Such a device will complement existing portable and built in traps and will assist the GLFC's goal of moving from trapping lampreys for assessment to trapping for control. (AIS); (aquatic invasive species); (ANS); (aquatic nuisance species); (sea lamprey); (sea lampreys); (Petromyzon marinus)
- A comparative study of culture-independent, library-independent genotypic methods of fecal source tracking
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General
Aquatic Nuisance Species
Annex
General
- Scope of Study
Scope of StudyField Investigation
- Scale of Phenomena
Scale of PhenomenaOrganism
- Impact of Pollutants
- Processes
ProcessesNatural Ecological Processes
- Land Use and Habitat
- Resource Management
Resource ManagementFisheries
- Socio-Economic
Socio-EconomicValuation Study
- State / Province
State ProvinceOntario
- Lake Basin / Connecting Channels
Lake Basin Connecting ChannelsLake Ontario
Monitoring
Aquatic Nuisance Species
- Biology And Life History
Biology And Life HistoryParasites and Diseases
- Control And Mitigation
Control And MitigationPhysical Measures
- Ecosystem Effects
Ecosystem EffectsPredator / Prey Interactions
- Prevention and Introduction
- Socio-economic Consideration and Analysis
- Spread of Established ANS Populations
Spread of Established ANS PopulationsMechanisms of Spread
Annex
- Annex Numbers
Annex NumbersResearch & Development
- Annex 17
Annex 17Impact of water quality and AIS on fish and wildlife populations and habitats