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dc.contributorVirginia Tech
dc.contributor.authorOrlofske, S. A.
dc.contributor.authorBelden, L. K.
dc.contributor.authorHopkins, W. A.
dc.date.accessioned2014-06-20T14:13:17Z
dc.date.available2014-06-20T14:13:17Z
dc.date.issued2009-08
dc.identifier.citationSarah A. Orlofske, Lisa K. Belden, and William A. Hopkins (2009). "Moderate Echinostoma trivolvis Infection Has No Effects on Physiology and Fitness-Related Traits of Larval Pickerel Frogs (Rana palustris)," Journal of Parasitology, Vol. 95, No. 4, pp. 787-792. doi: http://dx.doi.org/10.1645/GE-1840.1
dc.identifier.issn0022-3395
dc.identifier.urihttp://hdl.handle.net/10919/49058
dc.description.abstractHigh intensity infections of Echinostoma trivolvis is metacercariae decrease survival and growth of young amphibian larvae. However, in nature, parasites are highly aggregated, which results in a large proportion of the amphibian population being only moderately infected. Survival and growth responses at these more-common, low-infection levels remain poorly studied. Thus, we investigated the effects of moderate Echinostoma trivolvis metacercariae infection (following exposure to 0, 10, 30, or 90 cercariae) on the growth and development of pickerel frog (Rana palustris) tadpoles. We measured metabolism to determine whether increased energy expenditure is a potential physiological mechanism underlying previously documented reduced growth. Furthermore, we quantified tadpole intestine size, which can exhibit plasticity in response to changing metabolic demands, and we characterized metacercariae distribution in tadpole kidneys. Metacercariae encysted in the pronephros significantly more than in the mesonephros, but tended to occur equally in right and left kidneys. Two mo post-infection (PI), there were no changes in tadpole survival, development, intestine size, or growth related to metacercariae infection. Similarly, metacercariae did not significantly increase metabolic rates during encystment or at I mo PI. Our study demonstrated that modest E. trivolvis infections, representative of a large proportion of the host population, had no detectable effects on fitness-related traits in laboratory isolation from other ecological variables.
dc.description.sponsorshipVirginia Tech and by the National Science Foundation IOB-0615361
dc.description.sponsorshipNSF Graduate Research Fellowship
dc.language.isoen_US
dc.publisherAmerican Society of Parasitology
dc.subjecthelisoma-trivolvis
dc.subjectribeiroia-ondatrae
dc.subjecttrematode infection
dc.subjectcercariae
dc.subjecttadpoles
dc.subjectparasites
dc.subjectexposure
dc.subjectpipiens
dc.subjecteutrophication
dc.subjectmalformations
dc.subjectparasitology
dc.titleModerate echinostoma trivolvis infection has no effects on physiology and fitness-related traits of larval pickerel frogs (rana palustris)
dc.typeArticle - Refereed
dc.identifier.urlhttp://www.bioone.org/doi/abs/10.1645/GE-1840.1
dc.date.accessed2014-06-16
dc.title.serialJournal of Parasitology
dc.identifier.doihttps://doi.org/10.1645/ge-1840.1


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