Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 6 of 6 for “"trematode parasite"”.
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Trematode parasites of the mudsnail Ilyanassa obsoleta: An analysis of parasite communities at different scales
… examines the ecological factors that shape trematode parasite communities of mudsnail Ilyanassa obsoleta at three different spatial scales. Nine species of trematode which obligately infect I. obsoleta during larval stages but use numerous estuarine species as second intermediate and …
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The reciprocal influence of trematode parasites and malathion on developing pickerel frogs (Rana palustris)
… 48-hr toxicity tests to examine effect of trematode parasite, Echinostoma trivolvis, infection (0, 10, or 30 cercaria) on the susceptibility of pickerel frog tadpoles to the widely used organophosphate insecticide malathion. LC50 values ranged from 16.5 – 17.4 mg/L, within the range …
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Resolving the 150 year debate over the ecological history of the common periwinkle snail, Littorina littorea, in northeast North America
… were not successful. I therefore included novel parasite and molecular evidence to definitively resolve L. littorea's North American cryptogenic status.</p><p>First, I explored trematode species richness patterns in European versus North American L. littorea and two co-occurring native congeners, …
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Characterisation of an immune-modulating peptide secreted by a helminth worm
… of a PPAR-γ agonist being secreted by a helminth parasite as a mechanism of modulating mammalian innate immune responses. Importantly, a homologous parasite peptide from a related trematode parasite demonstrated the same activity suggesting a conserved mechanism of action among parasite helminths. …
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Trematode Communities of the Appalachian Stream Snail, Elimia proxima: the Importance of Scale in Parasite Ecology Research
… the ecological processes that impact parasite abundance and distribution is critically important for epidemiology and predicting how infectious disease dynamics may respond to future disturbance. Digenean trematodes (Platyhelminthes: Trematoda) are parasitic flatworms with complex, …