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    Salamanders increase their feeding activity when infected with the pathogenic chytrid fungus Batrachochytrium dendrobatidis

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    Date
    2015-10-27
    Author
    Hess, Alexandra
    McAllister, Caroline
    DeMarchi, Joseph
    Zidek, Makenzie
    Murone, Julie
    Venesky, Matthew D.
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    Embargo
    The accepted (postprint) version of the article is available for viewing to the public after October 27, 2016. The published version of the article is available for viewing to the public after October 27, 2020.
    URI
    http://hdl.handle.net/10456/40670
    Subject
     Amphibian; Batrachochytrium dendrobatidis; Behavior; Chytridiomycosis; Disease; Plethodon cinereus; Resistance 
    Abstract
    Immune function is a costly line of defense against parasitism. When infected with a parasite, hosts frequently lose mass due to these costs. However, some infected hosts (e.g. highly resistant individuals) can clear infections with seemingly little fitness losses, but few studies have tested how resistant hosts mitigate these costly immune defenses. We explored this topic using eastern red-backed salamanders Plethodon cinereus and the fungal pathogen Batrachochytrium dendrobatidis (Bd). Bd is generally lethal for amphibians, and stereotypical symptoms of infection include loss in mass and deficits in feeding. However, individuals of P. cinereus can clear their Bd infections with seemingly few fitness costs. We conducted an experiment in which we repeatedly observed the feeding activity of Bd-infected and non-infected salamanders. We found that Bd-infected salamanders generally increased their feeding activity compared to non-infected salamanders. The fact that we did not observe any differences in mass change between the treatments suggests that increased feeding might help Bd-infected salamanders minimize the costs of an effective immune response.
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    • Faculty Scholarship and Open Access Collection
    Department
    Biology
    Rights
    Copyright © 2015 Inter-Research.
    Citation
    Hess A, McAllister C, DeMarchi J, Zidek M, Murone J, Venesky MD (2015) Salamanders increase their feeding activity when infected with the pathogenic chytrid fungus Batrachochytrium dendrobatidis. Dis Aquat Org 116:205-212
    Version
    Preprint
    Postprint
    Published As
    http://dx.doi.org/10.3354/dao02915
    Journal
    Diseases of Aquatic Organisms
    Publisher
    Inter-Research
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