Measuring stress in wildlife: techniques for quantifying glucocorticoids

MJ Sheriff, B Dantzer, B Delehanty, R Palme… - Oecologia, 2011 - Springer
Stress responses play a key role in allowing animals to cope with change and challenge in
the face of both environmental certainty and uncertainty. Measurement of glucocorticoid …

Do baseline glucocorticoids predict fitness?

F Bonier, PR Martin, IT Moore, JC Wingfield - Trends in ecology & Evolution, 2009 - cell.com
Baseline glucocorticoid (cort) levels are increasingly employed as physiological indices of
the relative condition or health of individuals and populations. Often, high cort levels are …

[LIVRE][B] Mechanisms of life history evolution: the genetics and physiology of life history traits and trade-offs

T Flatt, A Heyland - 2011 - books.google.com
Life history theory seeks to explain the evolution of the major features of life cycles by
analyzing the ecological factors that shape age-specific schedules of growth, reproduction …

In search of relationships between the acute adrenocortical response and fitness

CW Breuner, SH Patterson, TP Hahn - General and comparative …, 2008 - Elsevier
The assumption that the acute response to stress is adaptive is pervasive in the literature,
but there is little direct evidence regarding potential positive fitness consequences of an …

Evaluating stress in natural populations of vertebrates: total CORT is not good enough

CW Breuner, B Delehanty, R Boonstra - Functional Ecology, 2013 - Wiley Online Library
Our goal in this review is to discuss how measures beyond simple quantification of total
glucocorticoid levels are needed in comparative studies of stress. We need to measure …

Stress response and the value of reproduction: are birds prudent parents?

V Bokony, AZ Lendvai, A Liker… - The American …, 2009 - journals.uchicago.edu
In vertebrates, stressors such as starvation or predator attacks stimulate the rapid elevation
of circulating glucocorticoid hormones, triggering physiological and behavioral responses …

Individual variation in endocrine systems: moving beyond the 'tyranny of the Golden Mean'

TD Williams - … Transactions of the Royal Society B …, 2008 - royalsocietypublishing.org
Twenty years ago, Albert Bennett published a paper in the influential book New directions in
ecological physiology arguing that individual variation was an 'underutilized resource'. In …

Development of stress reactivity in white-crowned sparrow nestlings: total corticosterone response increases with age, while free corticosterone response remains low

H Wada, TP Hahn, CW Breuner - General and comparative endocrinology, 2007 - Elsevier
Activation of the adrenocortical response to stress during development can have
fundamental consequences over the lifetime of the organism; as such, many organisms are …

Exploratory behaviour and stressor hyper-responsiveness facilitate range expansion of an introduced songbird

AL Liebl, LB Martin - Proceedings of the Royal Society B …, 2012 - royalsocietypublishing.org
Global anthropogenic changes are occurring at an unprecedented rate; one change, human-
facilitated introduction of species outside their native range, has had significant ecological …

Indirect predator effects on clutch size and the cost of egg production

M Travers, M Clinchy, L Zanette, R Boonstra… - Ecology …, 2010 - Wiley Online Library
Ecology Letters (2010) 13: 980–988 Abstract Predator‐induced changes in physiology and
behaviour may negatively affect a prey's birth rate. Evidence of such indirect predator effects …