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Description: |
1 online resource (viii, 126 pages) : color illustrations, charts |
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System Details Note: |
Mode of access: Internet via the World Wide Web. |
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System requirements: Internet connectivity; World Wide Web browser software; Adobe Acrobat Reader. |
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Type of File/Data : |
Type of file: Electronic book in PDF. |
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Dissertation Note: |
Thesis (M.S.) Mississippi State University. College of Veterinary Medicine 2017 |
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Bibliography Note: |
Includes bibliographical references. |
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Summary, Etc. Note: |
Abstract: Drepanocephalus auritus is a digenetic trematode parasitizing the double-crested cormorant, a piscivorous waterbird often found feeding on catfish aquaculture ponds in Mississippi. The aquatic snail Planorbella trivolvis was the only known intermediate host in Mississippi until a new snail host, Biomphalaria havanensis, was discovered releasing cercariae belonging to North and South American D. auritus haplotypes. In addition, previous work has reported D. auritus metacercariae begin to resolve in channel catfish 7-21 days post-infection. As a result, a 2-year study was undertaken to elucidate the life cycle of D. auritus and identify if channel catfish can serve as a true intermediate host. In year 1, the role of the channel catfish as a true intermediate host was established, as gravid adults were recovered from double-crested cormorants fed parasitized fish. In year 2, each step of the life cycle was completed, and developmental timelines for each life stage were established. |
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General Note: |
Title from PDF title page (viewed on May 11, 2018). |