Journal of Experimental Zoology Part A: Ecological and Integrative Physiology

Cover image for Vol. 327 Issue 4

Editor-in-Chief: David Crews, Ph.D.

Impact Factor: 1.28

ISI Journal Citation Reports © Ranking: 2016: 61/162 (Zoology)

Online ISSN: 2471-5646

Associated Title(s): Journal of Experimental Zoology Part B: Molecular and Developmental Evolution

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David Crews - 2017 Howard A. Bern Lecture Award Winner

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David Crews

Recently Published Articles

  1. Relationships between parasitic infection and natural antibodies, age, and sex in a long-lived vertebrate

    Katie Stromsland and Laura M. Zimmerman

    Version of Record online: 18 SEP 2017 | DOI: 10.1002/jez.2111

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    Abstract

    GRAPHICAL ABSTRACT

    In female turtles, parasite intensity decreased with increasing host age and mucosal antibody levels. Levels of natural antibody levels in the plasma and mucosal samples were significantly related. This study contributes to our understanding of how reptiles may utilize natural antibodies to compensate for a less robust adaptive response while potentially avoiding some negative consequences of immunosenescence.

  2. Repeated immune challenges affect testosterone but not sperm quality

    Katie B. Needham, Aurelia C. Kucera, Britt J. Heidinger and Timothy J. Greives

    Version of Record online: 18 SEP 2017 | DOI: 10.1002/jez.2110

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    GRAPHICAL ABSTRACT

    1. Lipopolysaccharide induced a physiological response.

    2. Lipopolysaccharide suppressed circulating testosterone, but not sperm quality.

  3. Low salinity-induced alterations in epithelial ultrastructure, Na+/K+-ATPase immunolocalization and enzyme kinetic characteristics in the gills of the thinstripe hermit crab, Clibanarius vittatus (Anomura, Diogenidae)

    Claudia Doi Antunes, Malson Neilson Lucena, Daniela Pereira Garçon, Francisco Assis Leone and John Campbell McNamara

    Version of Record online: 12 SEP 2017 | DOI: 10.1002/jez.2109

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    GRAPHICAL ABSTRACT

    Positive silver staining reveals all phyllobranchiate arthro- and pleurobranchiae to participate in ion transport. The Na+/K+-ATPase α-subunit is distributed weakly and irregularly within the intralamellar septal cells of crabs held in seawater. The entire thickened septum shows intense Na+/K+-ATPase α-subunit staining in crabs from dilute seawater. Pillar cells and their flanges do not stain. Augmented membrane infoldings greatly amplify epithelial cell surface area in crabs from dilute seawater. The Na+/K+-ATPase exhibits a single ATP binding site. Mg2+, Na+, K+, and NH4+ modulate enzyme activity; K+ plus NH4+ synergistically stimulates activity by ≈ 1.7-fold. Phyllobranchiate gills of Anomura and Caridea share a similar ultrastructure, Na+/K+-ATPase localization and kinetic characteristics, suggesting convergent evolution or retention of traits already present in a distant common ancestor.

  4. Local and systemic immune responses to different types of phytohemagglutinin in the green anole: Lessons for field ecoimmunologists

    Catherine Tylan and Tracy Langkilde

    Version of Record online: 11 SEP 2017 | DOI: 10.1002/jez.2108

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    GRAPHICAL ABSTRACT

    The PHA skin test is an effective test of cell-mediated immunity in green anoles (Anolis carolinensis), but different PHA types do not produce the same immune responses. PHA-L is a more specific test of lymphocyte function than PHA-P, making it preferable for use in ecoimmunology studies.

  5. Ectoparasites as developmental stressors: Effects on somatic and physiological development

    Leah J. E. Pryor and Joseph M. Casto

    Version of Record online: 11 SEP 2017 | DOI: 10.1002/jez.2097

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    GRAPHICAL ABSTRACT

    1. During the rapid-growth phase of nestling development, relative to starling nestlings raised in hematophagous mite-reduced nests, nestlings in mite-enhanced nests exhibit decreased innate immunity, but not decreased somatic growth.
    2. The pyrethroid pesticide permethrin is effective in limiting northern fowl mite infestations in nests; however, relative to starling nestlings in mite-treated nests, nestlings in permethrin-treated nests show elevated baseline corticosterone concentrations, perhaps indicating either endocrine disruption as a development side effect of permethrin use, or mite-infestation as an environmental factor influencing endocrine signaling in nestlings.
    3. Experimental addition of hematophagous northern fowl mites to nests during early incubation increased the density of spots on the surface of eggshells prior to hatching, which may serve as an effective indicator of mite infestation during incubation.

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