Presentations
Location
Schewel 232
Access Type
Campus Access Only
Entry Number
126
Start Date
4-4-2018 11:00 AM
Department
Biology
Abstract
The yellow perch, Perca flavescens, is commonly found in lakes, slow-moving rivers, reservoirs, and ponds throughout the northeastern part of North America, and plays an ecological role in aquatic community structure and freshwater ecosystem. P. flavescens is known to serve as an intermediate host for completing the life cycle of numerous aquatic parasites, including yellow grubbs, Clinostomum marginatum. Our preliminary data on the infestation rate of C. marginatum on P. flavescens, collected from two Minnesota lakes during 2013-2017, was 100% (N = 46). C. marginatum appeared to choose one of the three major body regions (i.e., gills, body muscles, fins) as the parasite enters and forms encystment within the fish. In testing the hypothesis that C. marginatum encystment leads to suboptimal output propulsive force production in P. flavescens, we examined how C. marginatum forms encystment in the axial muscles using haematoxylin and eosin staining technique. The histological results provide insights into the impacts of encystment on muscle function for force production during the burst escape behavior of the fish against piscivorous avian predators.
Faculty Mentor(s)
Takashi Maie
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Mode of Attachment of Avian Parasite, Clinostomum marginatum, in Intermediate Fish Host (Perca flavescens) and Impact on Host Locomotor Performance
Schewel 232
The yellow perch, Perca flavescens, is commonly found in lakes, slow-moving rivers, reservoirs, and ponds throughout the northeastern part of North America, and plays an ecological role in aquatic community structure and freshwater ecosystem. P. flavescens is known to serve as an intermediate host for completing the life cycle of numerous aquatic parasites, including yellow grubbs, Clinostomum marginatum. Our preliminary data on the infestation rate of C. marginatum on P. flavescens, collected from two Minnesota lakes during 2013-2017, was 100% (N = 46). C. marginatum appeared to choose one of the three major body regions (i.e., gills, body muscles, fins) as the parasite enters and forms encystment within the fish. In testing the hypothesis that C. marginatum encystment leads to suboptimal output propulsive force production in P. flavescens, we examined how C. marginatum forms encystment in the axial muscles using haematoxylin and eosin staining technique. The histological results provide insights into the impacts of encystment on muscle function for force production during the burst escape behavior of the fish against piscivorous avian predators.