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Yellow perch foraging on Hexagenia: Effects of hypoxia and Dreissena spp.

Burrowing mayflies were abundant in the western basin of Lake Erie,   but populations declined to near extirpation in the 195 's, but   recolonization has been documented since the early 199 's. Scientists   and managers have been optimistic about the recolonization of   burrowing mayflies because they are an additional food source to   important fish species, such as yellow perch. However, preliminary   research has shown that mayflies select sediment with 5 -1  %   coverage of Dreissena clusters, and this may impact their   availability to fish. Dreissena (zebra mussel, Dreissena polymorpha   and quagga mussel, D. bugensis) are invasive mussels that have   colonized a large range of habitats and protection from predation is   likely to be a mechanism for the observed preference for Dreissena   colonized sediment by mayflies. Conversely, sediment below Dreissena   clusters has low oxygen concentration, thus, during hypoxic   conditions mayflies may prefer areas with higher oxygen   concentrations, such as bare sediment or pelagic water. Therefore,   one of the primary goals of this research will be to test how two   environmental factors: 1) presence of non-indigenous Dreissena and 2)   hypoxia affect mayfly behavior and their availability to fish as a   food source. These factors are important because they may drive   habitat choice by burrowing mayflies and therefore affect fish   foraging success and ultimately growth.

Status
In progress
Type
Project
Start Date
End Date
Researchers
Chris MayerPrincipal Investigator
Associated with 1 projects
Kristen DeVannaResearcher
Associated with 1 projects
Agencies
Ohio Lake Erie Protection Fund $ 9,891.00USDActual

Funding 6 projects for a total of $49,873.00
Scope of Study
Laboratory Investigation
Scale of Phenomena
Community
Processes
Natural Ecological Processes
Land Use and Habitat
Shoreline
Resource Management
Fisheries
Lake Basin Connecting Channels
Lake Erie
Ecosystem Effects
Food Web Structure
Annex Numbers
Research & Development
Annex 17
Impact of water quality and AIS on fish and wildlife populations and habitats
General
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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