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DISRUPTION OF ALEWIFE RECRUITMENT IN LAKE MICHIGAN BY CERCOPAGISPENGOI AND BYTHOTREPHES LONGIMANUS

It is a goal of our proposal to develop a general model of prey selection and feeding for exotic species Cercopagis pengoi and Bythotrephes longimanus and to examine whether these cercopagids contribute to a bottleneck in recruitment of alewife (and yellow perch) in Lake Michigan. In addition, we hypothesize that adult alewives control Bythotrephes populations, mediate competitive and predatory interactions between Bythotrephes and Cercopagis, thereby affecting the bottleneck for alewife and other fish larvae such as perch.

Status
In progress
Type
Project
Start Date
End Date
Scope of Study
Field Investigation
Laboratory Investigation
Scale of Phenomena
Organism
Population
Impact of Pollutants
Exotic Species
Processes
Natural Ecological Processes
Resource Management
Fisheries
Lake Basin Connecting Channels
Lake Michigan
State Province
Michigan
Purpose of Project
Special Survey
Trend Assessment
Frequency
Monthly
Region Being Monitored
Near and OpenShore Waters
Biology And Life History
Population Dynamics
Ecosystem Effects
Food Web Structure
Spread of Established ANS Populations
Natural Barriers
Annex Numbers
Research & Development
Annex 17
Impact of water quality and AIS on fish and wildlife populations and habitats
General
Monitoring
Aquatic Nuisance Species
Annex
  • 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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up-to-date information about research projects in the
Great Lakes - St. Lawrence Region.