Using the van Noordwijk and de Jong Resource Framework to Evaluate Glucocorticoid-Fitness Hypotheses

Published on Aug 1, 2019in Integrative and Comparative Biology3.101
· DOI :10.1093/icb/icz088
Creagh W. Breuner38
Estimated H-index: 38
(UM: University of Montana),
Sara A. Berk1
Estimated H-index: 1
(UM: University of Montana)
  • References (53)
  • Citations (1)
#1Ashley R. Robart (LMU: Loyola Marymount University)H-Index: 2
#2Melissa I. Morado (LMU: Loyola Marymount University)H-Index: 1
Last. Heather E. Watts (LMU: Loyola Marymount University)H-Index: 11
view all 3 authors...
Abstract While obligate migrants time their movements to respond to predictable changes in the environment, facultative migration is characterized by more variable movements that are driven by unpredictable changes in resource availability. The proximate cues that trigger facultative migrations and the endocrine mechanisms involved in these responses remain poorly understood, though corticosterone may be a key mediator of facultative migration due to its effects on activity and metabolic process...
1 CitationsSource
#1Stefania Casagrande (MPG: Max Planck Society)H-Index: 14
#2Michaela Hau (MPG: Max Planck Society)H-Index: 43
The trade-off between reproductive investment and survival is central to life-history theory, but the relative importance and the complex interactions among the physiological mechanisms mediating i...
3 CitationsSource
#1Laura A. Schoenle (USF: University of South Florida)H-Index: 9
#2Cedric Zimmer (Cornell University)H-Index: 10
Last. Maren N. Vitousek (Cornell University)H-Index: 16
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It has been well-established that there is variation in the strength and direction of the relationship between circulating glucocorticoids (GCs) and fitness. When studies demonstrate such variation or the direction of the GC-fitness relationship is unexpected, the results are often attributed to context-dependency. However, descriptors of context can be vague (e.g., "environmental context") and few studies explicitly test how the optimal hypothalamic-pituitary-adrenal (HPA) axis response to stre...
10 CitationsSource
#1Maren N. Vitousek (Cornell University)H-Index: 16
#2Conor C. Taff (Cornell University)H-Index: 13
Last. David W. Winkler (Cornell University)H-Index: 47
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Glucocorticoid hormones are important regulators of metabolic processes, and of the behavioral and physiological responses to stressors. Within-population variation in circulating glucocorticoids has been linked with both reproductive success and survival, but the presence and direction of relationships vary. Although conceptual models suggest the potential for interactions between glucocorticoid secretion under acute stress and non-acute stress contexts to influence phenotype and fitness, very ...
22 CitationsSource
#1Christopher M. Harris (U of W: University of Windsor)H-Index: 3
#2Christine L. Madliger (U of W: University of Windsor)H-Index: 10
Last. Oliver P. Love (U of W: University of Windsor)H-Index: 26
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Feather corticosterone (CORT) levels are increasingly employed as biomarkers of environmental stress. However, it is unclear if feather CORT levels reflect stress and/or workload in the wild. We investigated whether feather CORT represents a biomarker of environmental stress and reproductive effort in tree swallows (Tachycineta bicolor). Specifically, we examined whether individual state and investment during reproduction could predict feather CORT levels in subsequently moulted feathers and whe...
5 CitationsSource
#1James W. Rivers (OSU: Oregon State University)H-Index: 14
#2Gretchen N. Newberry (OSU: Oregon State University)H-Index: 1
Last. Daniel R. Ardia (F&M: Franklin & Marshall College)H-Index: 26
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Summary 1.Glucocorticoid steroid hormones play a central role in regulating the metabolic state of animals, especially when they cope with unanticipated stressors in their environment. The cort-adaptation hypothesis predicts that baseline concentrations of glucocorticoids are adjusted upward to match energetic needs and promote fitness when individuals are faced with physiological challenges, including those associated with reproduction. 2.We tested the cort-adaptation hypothesis in the violet-g...
8 CitationsSource
#1Christine L. Madliger (U of W: University of Windsor)H-Index: 10
#2Oliver P. Love (U of W: University of Windsor)H-Index: 26
Glucocorticoids (GCs) are often interpreted as indicators of disturbance, habitat quality, and fitness in wild populations. However, since most investigations have been unable to examine habitat variability, GC levels, and fitness simultaneously, such interpretations remain largely unvalidated. We combined a quantification of two habitat types, a manipulation of foraging ability (feather-clipping just prior to nestling rearing), multiple baseline plasma GC measures, and multi-year reproductive m...
22 CitationsSource
#1Warren K. Hansen (UM: University of Montana)H-Index: 2
#2Lisa J. BateH-Index: 4
Last. Creagh W. Breuner (UM: University of Montana)H-Index: 38
view all 6 authors...
Understanding sources of reproductive variation can inform management and conservation decisions, population ecology and life-history theory. Annual reproductive variation can drive population growth rate and can be influenced by factors from across the annual cycle (known as carry-over effects). The majority of studies, however, focus solely on the role of current environmental events. Past events often influence future reproductive decisions and success but can be logistically difficult to col...
9 CitationsSource
#1Jaanis Lodjak (UT: University of Tartu)H-Index: 5
#2Marko Mägi (UT: University of Tartu)H-Index: 15
Last. Vallo Tilgar (UT: University of Tartu)H-Index: 19
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Life history theory seeks answers to questions about how suites of traits, like growth rate, body mass and survival, have coevolved to maximize the fitness of individuals. In stochastic environments, individual fitness may be closely linked to environmental conditions experienced early in life. When conditions deteriorate, animals have to adapt physiologically to avoid detrimental effects to growth and survival. Hormones such as glucocorticoids are potentially important mediators of developmenta...
14 CitationsSource
Synopsis Over the past 20 years, researchers have emphasized condition-dependency as a core feature of many sexually selected ornaments. This empirical focus has been motivated by the assumption that condition-dependent ornaments should function as honest indicators of other fitness-related traits. However, evidence remains mixed regarding whether condition-dependent ornaments are consistently correlated with the expression of other key traits such as immunocompetence. I argue that the diversity...
23 CitationsSource
Cited By1
#1Joshua Kenneth Robertson (Trent University)H-Index: 1
Last. Gary BurnessH-Index: 21
view all 3 authors...
Coping with stressors can require substantial energetic investment, and when resources are limited, such investment can preclude simultaneous expenditure on other biological processes. Among endotherms, energetic demands of thermoregulation can be immense, yet whether a stress response is sufficient to induce changes in thermoregulatory investment appears unexplored. We tested the hypothesis that stress-induced changes in surface temperature, a well-documented phenomenon across vertebrates, stem...
#1Jessica L. Malisch (St. Mary's College of Maryland)
#2Theodore Garland (UCR: University of California, Riverside)H-Index: 80
Last. Henry B. John-Alder (RU: Rutgers University)H-Index: 32
view all 6 authors...
Abstract Ecological factors, such as habitat quality, influence the survival and reproductive success of free-living organisms. Urbanization, including roads, alters native habitat and likely influences physiology, behavior, and ultimately Darwinian fitness. Some effects of roads are clearly negative, such as increased habitat fragmentation and mortality from vehicle collision. However, roads can also have positive effects, such as decreasing predator density and increased vegetation cover, part...
The hypothalamic-pituitary-adrenal (HPA) axis regulates the secretion of glucocorticoids, hormones with diverse roles ranging from regulating daily metabolic demand to coping with sudden perturbations. As a result, glucocorticoids are thought to help vertebrates track their changing environments and coordinate plasticity in diverse phenotypes. While this endocrine system is highly plastic-where one individual can produce multiple phenotypes across varying environmental conditions-little is under...
#1Britt J. Heidinger (NDSU: North Dakota State University)H-Index: 17
#2Haruka Wada (AU: Auburn University)H-Index: 18