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Seifarth J, Inamine H, Buckling A, Shea K. Duration and timing interactions of early‐life stress and the potential for recovery. Ecosphere 2021. [DOI: 10.1002/ecs2.3620] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022] Open
Affiliation(s)
- Jack Seifarth
- Department of Biology The Pennsylvania State University University Park Pennsylvania16801USA
| | - Hidetoshi Inamine
- Department of Biology The Pennsylvania State University University Park Pennsylvania16801USA
| | - Angus Buckling
- Department of Biosciences University of Exeter Penryn Campus PenrynTR10 9FEUK
| | - Katriona Shea
- Department of Biology The Pennsylvania State University University Park Pennsylvania16801USA
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Merrill L, Ospina EA, Santymire RM, Benson TJ. Egg Incubation Temperature Affects Development of Innate Immune Function in Nestling American Robins (Turdus migratorius). Physiol Biochem Zool 2020; 93:1-12. [DOI: 10.1086/705361] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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McCormick GL, Robbins TR, Cavigelli SA, Langkilde T. Population history with invasive predators predicts innate immune function response to early life glucocorticoid exposure. J Exp Biol 2019; 222:jeb.188359. [DOI: 10.1242/jeb.188359] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2018] [Accepted: 01/11/2019] [Indexed: 12/29/2022]
Abstract
Early life stress can suppress immune function, but it is unclear if transgenerational stress exposure modulates the immune consequences of early stress. In populations where, historically, the immune system is frequently activated, e.g. persistent stressors that cause injury, it may be maladaptive to suppress immune function after early life stress. Thus, the relationship between early life stress and immune function may vary with population-level historical stressor exposure. We collected gravid fence lizards (Sceloporus undulatus) from populations that naturally differ in long-term exposure to invasive fire ants (Solenopsis invicta). We manipulated early life stress in resulting offspring via weekly exposure to fire ants, application of the stress-relevant hormone corticosterone, or control treatment from 2 to 43 weeks of age. We quantified adult immune function in these offspring with baseline and antigen-induced hemagglutination and plasma bacterial killing ability. Early life corticosterone exposure suppressed baseline hemagglutination in offspring of lizards from populations without fire ants but enhanced hemagglutination in those from populations with fire ants. This enhancement may prepare lizards for high rates of wounding, toxin exposure, and infection associated with fire ant attack. Adult bacterial killing ability and hemagglutination were not affected by early life exposure to fire ants, but the latter was higher in offspring of lizards from invaded sites. A population's history of persistent wounding may thus alter individual long-term immunological responses to early life stressors. Further consideration of historical stressor exposure (type and duration) may be important to better understand how early life stressors affect adult physiology.
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Affiliation(s)
- Gail L. McCormick
- Department of Biology, Intercollege Graduate Degree Program in Ecology, The Pennsylvania State University, University Park, PA 16802, USA
- The Center for Brain, Behavior and Cognition, The Huck Institute of the Life Science, The Pennsylvania State University, University Park, PA 16802, USA
| | - Travis R. Robbins
- Department of Biology, Intercollege Graduate Degree Program in Ecology, The Pennsylvania State University, University Park, PA 16802, USA
| | - Sonia A. Cavigelli
- The Center for Brain, Behavior and Cognition, The Huck Institute of the Life Science, The Pennsylvania State University, University Park, PA 16802, USA
- Department of Biobehavioral Health, The Pennsylvania State University, University Park, PA 16802, USA
| | - Tracy Langkilde
- Department of Biology, Intercollege Graduate Degree Program in Ecology, The Pennsylvania State University, University Park, PA 16802, USA
- The Center for Brain, Behavior and Cognition, The Huck Institute of the Life Science, The Pennsylvania State University, University Park, PA 16802, USA
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Merrill L, Grindstaff JL. Early Life Stress Strengthens Trait Covariance: A Plastic Response That Results in Reduced Flexibility. Am Nat 2018; 192:593-604. [PMID: 30332583 DOI: 10.1086/699839] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
Stress exposure during development can impact both the expression of individual traits and associations between traits, but whether stress results in stronger or weaker associations between traits is unclear. In this study, we examined within- and among-trait associations for morphological and physiological traits in zebra finches (Taeniopygia guttata) exposed to corticosterone (CORT) during the nestling and fledging stages as well as in control birds. Birds exposed to CORT exhibited stronger within-trait correlations over time and stronger associations among traits. We found preliminary evidence that birds that died before the median age of death had stronger within- and among-trait correlations independent of treatment, and among CORT-treated birds, smaller birds were more likely to survive beyond the median age than larger birds. These findings suggest that stress hormone exposure in early life can result in reduced developmental flexibility, with potential fitness ramifications, and that these costs may be greater for larger offspring. Furthermore, our results provide experimental evidence for pleiotropic effects of hormones during development through altered patterns of phenotypic correlation.
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Bowden RM, French SS, Demas GE. Introduction to ecoimmunology: An integrative approach. JOURNAL OF EXPERIMENTAL ZOOLOGY PART 2017; 327:219-221. [DOI: 10.1002/jez.2114] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Rachel M. Bowden
- School of Biological Sciences; Illinois State University; Normal Illinois USA
| | | | - Gregory E. Demas
- Department of Biology; Indiana University; Bloomington Indiana USA
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