Sensory pollutants alter bird phenology and fitness across a continent

Nature, Journal Year: 2020, Volume and Issue: 587(7835), P. 605 - 609

Published: Nov. 11, 2020

Language: Английский

---

Towards an Evolutionary Theory of Stress Responses

Trends in Ecology & Evolution, Journal Year: 2020, Volume and Issue: 36(1), P. 39 - 48

Published: Oct. 5, 2020

Language: Английский

---

Glucocorticoids, the evolution of the stress-response, and the primate predicament

Neurobiology of Stress, Journal Year: 2021, Volume and Issue: 14, P. 100320 - 100320

Published: March 21, 2021

The adrenocortical stress-response is extraordinarily conserved across mammals, birds, fish, reptiles, and amphibians, suggesting that it has been present during the hundreds of millions years vertebrate existence. Given antiquity, relatively recent primate social complexity evolved to point that, uniquely, life can be dominated by chronic psychosocial stress. This paper first reviews evolution history. produces a consistent theme there being an evolutionary tradeoff between protective effects glucocorticoids ongoing physical stressor, versus adverse long-term consequences excessive glucocorticoid secretion; how this resolved depends on particular history strategies populations, species taxa. contrasts with in socially complex primates, who mal-adaptively activate classic emphasizes rather unique selective forces sculpting including humans.

Language: Английский

---

Does variation in glucocorticoid concentrations predict fitness? A phylogenetic meta-analysis

General and Comparative Endocrinology, Journal Year: 2020, Volume and Issue: 300, P. 113611 - 113611

Published: Sept. 18, 2020

Language: Английский

---

Baseline and stress-induced corticosterone levels across birds and reptiles do not reflect urbanization levels

Conservation Physiology, Journal Year: 2019, Volume and Issue: 8(1)

Published: Dec. 3, 2019

Rates of human-induced environmental change continue increasing with human population size, potentially altering animal physiology and negatively affecting wildlife. Researchers often use glucocorticoid concentrations (hormones that can be associated stressors) to gauge the impact anthropogenic factors (e.g. urbanization, noise light pollution). Yet, no general relationships between glucocorticoids have emerged. Given number recent studies reporting baseline stress-induced corticosterone (the primary in birds reptiles) worldwide, it is now possible conduct large-scale comparative analyses test for associations disturbance across species. Additionally, we control may influence context, such as life history stage, conditions urban adaptability a Here, take phylogenetically informed approach data from HormoneBase if are valid indicators exposure footprint index, density, artificial at night reptiles. Our results show negative relationship characterized avoiders. While our indicate avoiders more sensitive than other species, overall study suggests varies species contexts; found impacts birds, nor Therefore, should not assumed high or low levels levels, respectively, closely related even individuals, will respond similarly. Moving forward, measuring alternative physiological traits alongside reproductive success, health survival provide context better understand potential effects change.

Language: Английский

---

Non-invasive Methods for Measuring and Monitoring Stress Physiology in Imperiled Amphibians

Frontiers in Ecology and Evolution, Journal Year: 2019, Volume and Issue: 7

Published: Nov. 19, 2019

Global climate change is negatively impacting global biodiversity and ectothermic vertebrates, with amphibians being the most imperiled vertebrate taxa. Increased mean atmospheric temperatures, high rates of habitat degradation, exposure to infectious diseases such as chytridiomycosis, have contributed population declines extinctions rare endangered amphibian species. Field-based monitoring physiological endocrine traits can help determine sub-lethal effects environmental stressors provide early alerts when populations are chronically stressed. Recent advances in stress endocrinology include development use non-invasive methods quantify glucocorticoid, or biomarker, corticosterone. Non-invasive methods, urinary, skin buccal swabs, water-borne hormone (suited for terrestrial aquatic dwelling species), available baseline short-term responses under field settings. In this review, we illustrate, by using two case studies species, applications corticosterone advance ecological knowledge conservation discuss limitations these future directions methods. We highlight monitor impacts on physiology amphibians, which be applied research, conservation, management

Language: Английский

---

Biology of Stress

Springer eBooks, Journal Year: 2023, Volume and Issue: unknown, P. 93 - 142

Published: Jan. 1, 2023

Language: Английский

---

Endocrine flexibility can facilitate or constrain the ability to cope with global change

Philosophical Transactions of the Royal Society B Biological Sciences, Journal Year: 2024, Volume and Issue: 379(1898)

Published: Feb. 5, 2024

Global climate change has increased average environmental temperatures world-wide, simultaneously intensifying temperature variability and extremes. Growing numbers of studies have documented phenological, behavioural morphological responses to in wild populations. As systemic signals, hormones can contribute orchestrating many these phenotypic changes. Yet little is known about whether mechanisms like hormonal flexibility (reversible changes hormone concentrations) facilitate or limit the ability individuals, populations species cope with a changing climate. In this perspective, we discuss different by which flexibility, primarily glucocorticoids, could promote versus hinder evolutionary adaptation regimes. We focus on because it key gradient influenced change, easy quantify, its links are well established. argue that reaction norm connect individual population-level species-wide patterns will be critical for making progress field. also develop case study urban heat islands, where several questions regarding addressed. Understanding allow animals when conditions become more challenging help predicting vulnerable ongoing change. This article part theme issue 'Endocrine variation: conceptual approaches recent developments'.

Language: Английский

---

Individual Variation in Glucocorticoid Plasticity: Considerations and Future Directions

Integrative and Comparative Biology, Journal Year: 2020, Volume and Issue: 60(1), P. 79 - 88

Published: Feb. 20, 2020

The hypothalamic-pituitary-adrenal (HPA) axis regulates the secretion of glucocorticoids, hormones with diverse roles ranging from regulating daily metabolic demand to coping sudden perturbations. As a result, glucocorticoids are thought help vertebrates track their changing environments and coordinate plasticity in phenotypes. While this endocrine system is highly plastic-where one individual can produce multiple phenotypes across varying environmental conditions-little understood about degree which individuals, populations, or species differ circulating glucocorticoid plasticity. Empirical research quantifying variation has increased recent years, though complex HPA-axis make it challenging generalize extent exists. I provide an overview current findings on plasticity, outline types researchers should consider future work advance our understanding causes consequences

Language: Английский

---

Integrating theoretical and empirical approaches for a robust understanding of endocrine flexibility

Journal of Experimental Biology, Journal Year: 2022, Volume and Issue: 225(Suppl_1)

Published: March 8, 2022

ABSTRACT There is growing interest in studying hormones beyond single ‘snapshot’ measurements, as recognition that individual variation the endocrine response to environmental change may underlie many rapid, coordinated phenotypic changes. Repeated measures of hormone levels individuals provide additional insight into flexibility – is, how modulate environment. The ability quickly and appropriately modify phenotype predicted be favored by selection, especially unpredictable environments. need for repeated samples from can make empirical studies logistically challenging, but methods based mathematical modeling insights circumvent these challenges. Our Review introduces defines flexibility, reviews existing studies, makes suggestions future work, recommends approaches complement work significantly advance our understanding. Mathematical not yet widely employed endocrinology, used identify innovative areas research generate novel predictions testing.

Language: Английский

---