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Identification of Michigan Fishes Using Cleithra

Diet analyses are a tool commonly used by fisheries managers to   determine feeding habits and food web interactions of aquatic   organisms.  Many different methods are used to identify and quantify   diets of piscivores, but each method has unique advantages and   disadvantages.  There are several characteristic bony structures   which can be used to identify partially digested fish, including   otoliths, vertebrae, opercles, and cleithra.  In our diet studies   cleithra have been the most useful structures for identifying   partially digested fish, yet little information exists on how to   identify fish with this structure and currently there are no   published cleithra identification guides.  Diet studies are becoming   an increasingly more frequently used tool by fisheries managers as   mortality sources for fish and foodweb shifts are experienced with   ecosystem changes in the Great Lakes.  Thus, we expect this guide to   be highly valuable for academic and agency staff for identifying   fish in stomach contents.

Status
In progress
Type
Project
Start Date
End Date
Researchers
Daniel TraynorPrincipal Investigator
Associated with 1 projects
Ashley MoerkeResearcher
Associated with 1 projects
Roger GreilResearcher
Associated with 1 projects
Agencies
Great Lakes Fishery Commission $ 16,150.00USDActual

Funding 54 projects for a total of $5,089,137.00
Resource Management
Fisheries
Wildlife
Lake Basin Connecting Channels
Detroit River
Lake Erie
Lake Huron
Lake Michigan
Lake Ontario
Lake Superior
St. Clair River
St. Marys River
St.Lawrence River
State Province
Michigan
Minnesota
New York
Ohio
Ontario
Wisconsin
Annex Numbers
Surveillance and Monitoring
General
Annex

The Great Lakes - St. Lawrence Research Inventory is an
interactive, Internet-based, searchable database created as a tool to collect and disseminate
up-to-date information about research projects in the
Great Lakes - St. Lawrence Region.